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<title>TheAlgorithms/C++: range_queries/segtree.cpp File Reference</title>
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<div id="projectname">Algorithms_in_C++<span id="projectnumber"> 1.0.0</span>
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<div id="projectname">TheAlgorithms/C++<span id="projectnumber"> 1.0.0</span>
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</div>
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<div id="projectbrief">Set of algorithms implemented in C++.</div>
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<div id="projectbrief">All the algorithms implemented in C++</div>
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</td>
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</tr>
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</tbody>
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@@ -122,16 +139,18 @@ Include dependency graph for segtree.cpp:</div>
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<div class="dyncontent">
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<div class="center"><iframe scrolling="no" frameborder="0" src="../../de/db6/segtree_8cpp__incl.svg" width="418" height="111"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
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</div>
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<p><a href="../../d2/d45/segtree_8cpp_source.html">Go to the source code of this file.</a></p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:ae752659b7c1719d68fdb2ca538a93696" id="r_ae752659b7c1719d68fdb2ca538a93696"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="#ae752659b7c1719d68fdb2ca538a93696">ConsTree</a> (const <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a>< int64_t > &arr, <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a>< int64_t > *segtree, uint64_t low, uint64_t high, uint64_t pos)</td></tr>
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<tr class="memdesc:ae752659b7c1719d68fdb2ca538a93696"><td class="mdescLeft"> </td><td class="mdescRight">for <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a> <br /></td></tr>
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<tr class="memitem:ae752659b7c1719d68fdb2ca538a93696" id="r_ae752659b7c1719d68fdb2ca538a93696"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="#ae752659b7c1719d68fdb2ca538a93696">ConsTree</a> (const std::vector< int64_t > &arr, std::vector< int64_t > *segtree, uint64_t low, uint64_t high, uint64_t pos)</td></tr>
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<tr class="memdesc:ae752659b7c1719d68fdb2ca538a93696"><td class="mdescLeft"> </td><td class="mdescRight">for std::vector <br /></td></tr>
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<tr class="separator:ae752659b7c1719d68fdb2ca538a93696"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a423a97ea0c7ea6e33b5844a6858d902d" id="r_a423a97ea0c7ea6e33b5844a6858d902d"><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="#a423a97ea0c7ea6e33b5844a6858d902d">query</a> (<a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a>< int64_t > *segtree, <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a>< int64_t > *lazy, uint64_t qlow, uint64_t qhigh, uint64_t low, uint64_t high, uint64_t pos)</td></tr>
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<tr class="memitem:a423a97ea0c7ea6e33b5844a6858d902d" id="r_a423a97ea0c7ea6e33b5844a6858d902d"><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="#a423a97ea0c7ea6e33b5844a6858d902d">query</a> (std::vector< int64_t > *segtree, std::vector< int64_t > *lazy, uint64_t qlow, uint64_t qhigh, uint64_t low, uint64_t high, uint64_t pos)</td></tr>
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<tr class="memdesc:a423a97ea0c7ea6e33b5844a6858d902d"><td class="mdescLeft"> </td><td class="mdescRight">Returns the sum of all elements in a range. <br /></td></tr>
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<tr class="separator:a423a97ea0c7ea6e33b5844a6858d902d"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:abd3e818681fb2e29cf08f4f60f82c8e0" id="r_abd3e818681fb2e29cf08f4f60f82c8e0"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="#abd3e818681fb2e29cf08f4f60f82c8e0">update</a> (<a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a>< int64_t > *segtree, <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a>< int64_t > *lazy, int64_t start, int64_t end, int64_t delta, uint64_t low, uint64_t high, uint64_t pos)</td></tr>
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<tr class="memitem:abd3e818681fb2e29cf08f4f60f82c8e0" id="r_abd3e818681fb2e29cf08f4f60f82c8e0"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="#abd3e818681fb2e29cf08f4f60f82c8e0">update</a> (std::vector< int64_t > *segtree, std::vector< int64_t > *lazy, int64_t start, int64_t end, int64_t delta, uint64_t low, uint64_t high, uint64_t pos)</td></tr>
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<tr class="memdesc:abd3e818681fb2e29cf08f4f60f82c8e0"><td class="mdescLeft"> </td><td class="mdescRight">Updates a range of the segment tree. <br /></td></tr>
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<tr class="separator:abd3e818681fb2e29cf08f4f60f82c8e0"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aa8dca7b867074164d5f45b0f3851269d" id="r_aa8dca7b867074164d5f45b0f3851269d"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="#aa8dca7b867074164d5f45b0f3851269d">test</a> ()</td></tr>
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@@ -155,6 +174,8 @@ Functions</h2></td></tr>
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<a href="https://github.com/sohamroy19" target="_blank">Soham Roy</a> </dd></dl>
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</li>
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</ul>
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<p class="definition">Definition in file <a class="el" href="../../d2/d45/segtree_8cpp_source.html">segtree.cpp</a>.</p>
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</div><h2 class="groupheader">Function Documentation</h2>
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<a id="ae752659b7c1719d68fdb2ca538a93696" name="ae752659b7c1719d68fdb2ca538a93696"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ae752659b7c1719d68fdb2ca538a93696">◆ </a></span>ConsTree()</h2>
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@@ -165,12 +186,12 @@ Functions</h2></td></tr>
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<tr>
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<td class="memname">void ConsTree </td>
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<td>(</td>
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<td class="paramtype">const <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a>< int64_t > &</td> <td class="paramname"><span class="paramname"><em>arr</em></span>, </td>
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<td class="paramtype">const std::vector< int64_t > &</td> <td class="paramname"><span class="paramname"><em>arr</em></span>, </td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"><a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a>< int64_t > *</td> <td class="paramname"><span class="paramname"><em>segtree</em></span>, </td>
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<td class="paramtype">std::vector< int64_t > *</td> <td class="paramname"><span class="paramname"><em>segtree</em></span>, </td>
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</tr>
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<td class="paramkey"></td>
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@@ -190,8 +211,8 @@ Functions</h2></td></tr>
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</div><div class="memdoc">
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<p>for <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a> </p>
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<p>for assert for log2 for <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_t</a> for IO operations</p>
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<p>for std::vector </p>
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<p>for assert for log2 for std::uint64_t for IO operations</p>
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<p>Constructs the initial segment tree</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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@@ -204,6 +225,8 @@ Functions</h2></td></tr>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>void </dd></dl>
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<p class="definition">Definition at line <a class="el" href="../../d2/d45/segtree_8cpp_source.html#l00038">38</a> of file <a class="el" href="../../d2/d45/segtree_8cpp_source.html">segtree.cpp</a>.</p>
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<div class="fragment"><div class="line"><span class="lineno"> 39</span> {</div>
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<div class="line"><span class="lineno"> 40</span> <span class="keywordflow">if</span> (low == high) {</div>
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<div class="line"><span class="lineno"> 41</span> (*segtree)[pos] = arr[low];</div>
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@@ -215,13 +238,8 @@ Functions</h2></td></tr>
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||||
<div class="line"><span class="lineno"> 47</span> <a class="code hl_function" href="#ae752659b7c1719d68fdb2ca538a93696">ConsTree</a>(arr, segtree, mid + 1, high, 2 * pos + 2);</div>
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<div class="line"><span class="lineno"> 48</span> (*segtree)[pos] = (*segtree)[2 * pos + 1] + (*segtree)[2 * pos + 2];</div>
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<div class="line"><span class="lineno"> 49</span>}</div>
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<div class="ttc" id="asegtree_8cpp_html_ae752659b7c1719d68fdb2ca538a93696"><div class="ttname"><a href="#ae752659b7c1719d68fdb2ca538a93696">ConsTree</a></div><div class="ttdeci">void ConsTree(const std::vector< int64_t > &arr, std::vector< int64_t > *segtree, uint64_t low, uint64_t high, uint64_t pos)</div><div class="ttdoc">for std::vector</div><div class="ttdef"><b>Definition</b> segtree.cpp:38</div></div>
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</div><!-- fragment --><div class="dynheader">
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Here is the call graph for this function:</div>
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<div class="dyncontent">
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||||
<div class="center"><iframe scrolling="no" frameborder="0" src="../../d2/d45/segtree_8cpp_ae752659b7c1719d68fdb2ca538a93696_cgraph.svg" width="90" height="60"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
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</div>
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||||
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<div class="ttc" id="asegtree_8cpp_html_ae752659b7c1719d68fdb2ca538a93696"><div class="ttname"><a href="#ae752659b7c1719d68fdb2ca538a93696">ConsTree</a></div><div class="ttdeci">void ConsTree(const std::vector< int64_t > &arr, std::vector< int64_t > *segtree, uint64_t low, uint64_t high, uint64_t pos)</div><div class="ttdoc">for std::vector</div><div class="ttdef"><b>Definition</b> <a href="../../d2/d45/segtree_8cpp_source.html#l00038">segtree.cpp:38</a></div></div>
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</div><!-- fragment -->
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</div>
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</div>
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<a id="ae66f6b31b5ad750f1fe042a706a4e3d4" name="ae66f6b31b5ad750f1fe042a706a4e3d4"></a>
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@@ -241,73 +259,64 @@ Here is the call graph for this function:</div>
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<p>Main function. </p>
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<dl class="section return"><dt>Returns</dt><dd>0 on exit </dd></dl>
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<p class="definition">Definition at line <a class="el" href="../../d2/d45/segtree_8cpp_source.html#l00168">168</a> of file <a class="el" href="../../d2/d45/segtree_8cpp_source.html">segtree.cpp</a>.</p>
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<div class="fragment"><div class="line"><span class="lineno"> 168</span> {</div>
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<div class="line"><span class="lineno"> 169</span> <a class="code hl_function" href="#aa8dca7b867074164d5f45b0f3851269d">test</a>(); <span class="comment">// run self-test implementations</span></div>
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<div class="line"><span class="lineno"> 170</span> </div>
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<div class="line"><span class="lineno"> 171</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Enter number of elements: "</span>;</div>
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<div class="line"><span class="lineno"> 171</span> std::cout << <span class="stringliteral">"Enter number of elements: "</span>;</div>
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<div class="line"><span class="lineno"> 172</span> </div>
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<div class="line"><span class="lineno"> 173</span> uint64_t n = 0;</div>
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<div class="line"><span class="lineno"> 174</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a> >> n;</div>
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<div class="line"><span class="lineno"> 174</span> std::cin >> n;</div>
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<div class="line"><span class="lineno"> 175</span> </div>
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<div class="line"><span class="lineno"> 176</span> <span class="keyword">auto</span> <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/algorithm/max.html">max</a> = <span class="keyword">static_cast<</span>uint64_t<span class="keyword">></span>(2 * <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/math/pow.html">pow</a>(2, <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/math/ceil.html">ceil</a>(log2(n))) - 1);</div>
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<div class="line"><span class="lineno"> 177</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector<int64_t></a> arr(n), lazy(max), segtree(max);</div>
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<div class="line"><span class="lineno"> 176</span> <span class="keyword">auto</span> max = <span class="keyword">static_cast<</span>uint64_t<span class="keyword">></span>(2 * pow(2, ceil(log2(n))) - 1);</div>
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<div class="line"><span class="lineno"> 177</span> std::vector<int64_t> arr(n), lazy(max), segtree(max);</div>
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<div class="line"><span class="lineno"> 178</span> </div>
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<div class="line"><span class="lineno"> 179</span> <span class="keywordtype">int</span> choice = 0;</div>
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<div class="line"><span class="lineno"> 180</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"\nDo you wish to enter each number?:\n"</span></div>
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<div class="line"><span class="lineno"> 180</span> std::cout << <span class="stringliteral">"\nDo you wish to enter each number?:\n"</span></div>
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<div class="line"><span class="lineno"> 181</span> <span class="stringliteral">"1: Yes\n"</span></div>
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<div class="line"><span class="lineno"> 182</span> <span class="stringliteral">"0: No (default initialize them to 0)\n"</span>;</div>
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<div class="line"><span class="lineno"> 183</span> </div>
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<div class="line"><span class="lineno"> 184</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a> >> choice;</div>
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<div class="line"><span class="lineno"> 184</span> std::cin >> choice;</div>
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<div class="line"><span class="lineno"> 185</span> <span class="keywordflow">if</span> (choice == 1) {</div>
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<div class="line"><span class="lineno"> 186</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Enter "</span> << n << <span class="stringliteral">" numbers:\n"</span>;</div>
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<div class="line"><span class="lineno"> 186</span> std::cout << <span class="stringliteral">"Enter "</span> << n << <span class="stringliteral">" numbers:\n"</span>;</div>
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<div class="line"><span class="lineno"> 187</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 1; i <= n; i++) {</div>
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<div class="line"><span class="lineno"> 188</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << i << <span class="stringliteral">": "</span>;</div>
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<div class="line"><span class="lineno"> 189</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a> >> arr[i];</div>
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<div class="line"><span class="lineno"> 188</span> std::cout << i << <span class="stringliteral">": "</span>;</div>
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<div class="line"><span class="lineno"> 189</span> std::cin >> arr[i];</div>
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<div class="line"><span class="lineno"> 190</span> }</div>
|
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<div class="line"><span class="lineno"> 191</span> }</div>
|
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<div class="line"><span class="lineno"> 192</span> </div>
|
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<div class="line"><span class="lineno"> 193</span> <a class="code hl_function" href="#ae752659b7c1719d68fdb2ca538a93696">ConsTree</a>(arr, &segtree, 0, n - 1, 0);</div>
|
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<div class="line"><span class="lineno"> 194</span> </div>
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<div class="line"><span class="lineno"> 195</span> <span class="keywordflow">do</span> {</div>
|
||||
<div class="line"><span class="lineno"> 196</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"\nMake your choice:\n"</span></div>
|
||||
<div class="line"><span class="lineno"> 196</span> std::cout << <span class="stringliteral">"\nMake your choice:\n"</span></div>
|
||||
<div class="line"><span class="lineno"> 197</span> <span class="stringliteral">"1: Range update (input)\n"</span></div>
|
||||
<div class="line"><span class="lineno"> 198</span> <span class="stringliteral">"2: Range query (output)\n"</span></div>
|
||||
<div class="line"><span class="lineno"> 199</span> <span class="stringliteral">"0: Exit\n"</span>;</div>
|
||||
<div class="line"><span class="lineno"> 200</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a> >> choice;</div>
|
||||
<div class="line"><span class="lineno"> 200</span> std::cin >> choice;</div>
|
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<div class="line"><span class="lineno"> 201</span> </div>
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||||
<div class="line"><span class="lineno"> 202</span> <span class="keywordflow">if</span> (choice == 1) {</div>
|
||||
<div class="line"><span class="lineno"> 203</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Enter 1-indexed lower bound, upper bound & value:\n"</span>;</div>
|
||||
<div class="line"><span class="lineno"> 203</span> std::cout << <span class="stringliteral">"Enter 1-indexed lower bound, upper bound & value:\n"</span>;</div>
|
||||
<div class="line"><span class="lineno"> 204</span> </div>
|
||||
<div class="line"><span class="lineno"> 205</span> uint64_t p = 1, q = 1, v = 0;</div>
|
||||
<div class="line"><span class="lineno"> 206</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a> >> p >> q >> v;</div>
|
||||
<div class="line"><span class="lineno"> 206</span> std::cin >> p >> q >> v;</div>
|
||||
<div class="line"><span class="lineno"> 207</span> <a class="code hl_function" href="#abd3e818681fb2e29cf08f4f60f82c8e0">update</a>(&segtree, &lazy, p - 1, q - 1, v, 0, n - 1, 0);</div>
|
||||
<div class="line"><span class="lineno"> 208</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (choice == 2) {</div>
|
||||
<div class="line"><span class="lineno"> 209</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Enter 1-indexed lower bound & upper bound:\n"</span>;</div>
|
||||
<div class="line"><span class="lineno"> 209</span> std::cout << <span class="stringliteral">"Enter 1-indexed lower bound & upper bound:\n"</span>;</div>
|
||||
<div class="line"><span class="lineno"> 210</span> </div>
|
||||
<div class="line"><span class="lineno"> 211</span> uint64_t p = 1, q = 1;</div>
|
||||
<div class="line"><span class="lineno"> 212</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a> >> p >> q;</div>
|
||||
<div class="line"><span class="lineno"> 213</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <a class="code hl_function" href="#a423a97ea0c7ea6e33b5844a6858d902d">query</a>(&segtree, &lazy, p - 1, q - 1, 0, n - 1, 0);</div>
|
||||
<div class="line"><span class="lineno"> 214</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"\n"</span>;</div>
|
||||
<div class="line"><span class="lineno"> 212</span> std::cin >> p >> q;</div>
|
||||
<div class="line"><span class="lineno"> 213</span> std::cout << <a class="code hl_function" href="#a423a97ea0c7ea6e33b5844a6858d902d">query</a>(&segtree, &lazy, p - 1, q - 1, 0, n - 1, 0);</div>
|
||||
<div class="line"><span class="lineno"> 214</span> std::cout << <span class="stringliteral">"\n"</span>;</div>
|
||||
<div class="line"><span class="lineno"> 215</span> }</div>
|
||||
<div class="line"><span class="lineno"> 216</span> } <span class="keywordflow">while</span> (choice > 0);</div>
|
||||
<div class="line"><span class="lineno"> 217</span> </div>
|
||||
<div class="line"><span class="lineno"> 218</span> <span class="keywordflow">return</span> 0;</div>
|
||||
<div class="line"><span class="lineno"> 219</span>}</div>
|
||||
<div class="ttc" id="abasic_istream_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a></div></div>
|
||||
<div class="ttc" id="abasic_ostream_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a></div></div>
|
||||
<div class="ttc" id="aceil_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/numeric/math/ceil.html">std::ceil</a></div><div class="ttdeci">T ceil(T... args)</div></div>
|
||||
<div class="ttc" id="amax_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/algorithm/max.html">std::max</a></div><div class="ttdeci">T max(T... args)</div></div>
|
||||
<div class="ttc" id="apow_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/numeric/math/pow.html">std::pow</a></div><div class="ttdeci">T pow(T... args)</div></div>
|
||||
<div class="ttc" id="asegtree_8cpp_html_a423a97ea0c7ea6e33b5844a6858d902d"><div class="ttname"><a href="#a423a97ea0c7ea6e33b5844a6858d902d">query</a></div><div class="ttdeci">int64_t query(std::vector< int64_t > *segtree, std::vector< int64_t > *lazy, uint64_t qlow, uint64_t qhigh, uint64_t low, uint64_t high, uint64_t pos)</div><div class="ttdoc">Returns the sum of all elements in a range.</div><div class="ttdef"><b>Definition</b> segtree.cpp:63</div></div>
|
||||
<div class="ttc" id="asegtree_8cpp_html_aa8dca7b867074164d5f45b0f3851269d"><div class="ttname"><a href="#aa8dca7b867074164d5f45b0f3851269d">test</a></div><div class="ttdeci">static void test()</div><div class="ttdoc">Self-test implementation.</div><div class="ttdef"><b>Definition</b> segtree.cpp:147</div></div>
|
||||
<div class="ttc" id="asegtree_8cpp_html_abd3e818681fb2e29cf08f4f60f82c8e0"><div class="ttname"><a href="#abd3e818681fb2e29cf08f4f60f82c8e0">update</a></div><div class="ttdeci">void update(std::vector< int64_t > *segtree, std::vector< int64_t > *lazy, int64_t start, int64_t end, int64_t delta, uint64_t low, uint64_t high, uint64_t pos)</div><div class="ttdoc">Updates a range of the segment tree.</div><div class="ttdef"><b>Definition</b> segtree.cpp:103</div></div>
|
||||
<div class="ttc" id="avector_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a></div></div>
|
||||
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|
||||
Here is the call graph for this function:</div>
|
||||
<div class="dyncontent">
|
||||
<div class="center"><iframe scrolling="no" frameborder="0" src="../../d2/d45/segtree_8cpp_ae66f6b31b5ad750f1fe042a706a4e3d4_cgraph.svg" width="278" height="208"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
|
||||
</div>
|
||||
|
||||
<div class="ttc" id="asegtree_8cpp_html_a423a97ea0c7ea6e33b5844a6858d902d"><div class="ttname"><a href="#a423a97ea0c7ea6e33b5844a6858d902d">query</a></div><div class="ttdeci">int64_t query(std::vector< int64_t > *segtree, std::vector< int64_t > *lazy, uint64_t qlow, uint64_t qhigh, uint64_t low, uint64_t high, uint64_t pos)</div><div class="ttdoc">Returns the sum of all elements in a range.</div><div class="ttdef"><b>Definition</b> <a href="../../d2/d45/segtree_8cpp_source.html#l00063">segtree.cpp:63</a></div></div>
|
||||
<div class="ttc" id="asegtree_8cpp_html_aa8dca7b867074164d5f45b0f3851269d"><div class="ttname"><a href="#aa8dca7b867074164d5f45b0f3851269d">test</a></div><div class="ttdeci">static void test()</div><div class="ttdoc">Self-test implementation.</div><div class="ttdef"><b>Definition</b> <a href="../../d2/d45/segtree_8cpp_source.html#l00147">segtree.cpp:147</a></div></div>
|
||||
<div class="ttc" id="asegtree_8cpp_html_abd3e818681fb2e29cf08f4f60f82c8e0"><div class="ttname"><a href="#abd3e818681fb2e29cf08f4f60f82c8e0">update</a></div><div class="ttdeci">void update(std::vector< int64_t > *segtree, std::vector< int64_t > *lazy, int64_t start, int64_t end, int64_t delta, uint64_t low, uint64_t high, uint64_t pos)</div><div class="ttdoc">Updates a range of the segment tree.</div><div class="ttdef"><b>Definition</b> <a href="../../d2/d45/segtree_8cpp_source.html#l00103">segtree.cpp:103</a></div></div>
|
||||
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||||
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||||
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||||
<a id="a423a97ea0c7ea6e33b5844a6858d902d" name="a423a97ea0c7ea6e33b5844a6858d902d"></a>
|
||||
@@ -319,12 +328,12 @@ Here is the call graph for this function:</div>
|
||||
<tr>
|
||||
<td class="memname">int64_t query </td>
|
||||
<td>(</td>
|
||||
<td class="paramtype"><a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a>< int64_t > *</td> <td class="paramname"><span class="paramname"><em>segtree</em></span>, </td>
|
||||
<td class="paramtype">std::vector< int64_t > *</td> <td class="paramname"><span class="paramname"><em>segtree</em></span>, </td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="paramkey"></td>
|
||||
<td></td>
|
||||
<td class="paramtype"><a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a>< int64_t > *</td> <td class="paramname"><span class="paramname"><em>lazy</em></span>, </td>
|
||||
<td class="paramtype">std::vector< int64_t > *</td> <td class="paramname"><span class="paramname"><em>lazy</em></span>, </td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="paramkey"></td>
|
||||
@@ -368,6 +377,8 @@ Here is the call graph for this function:</div>
|
||||
</dd>
|
||||
</dl>
|
||||
<dl class="section return"><dt>Returns</dt><dd>result of the range query for this function call </dd></dl>
|
||||
|
||||
<p class="definition">Definition at line <a class="el" href="../../d2/d45/segtree_8cpp_source.html#l00063">63</a> of file <a class="el" href="../../d2/d45/segtree_8cpp_source.html">segtree.cpp</a>.</p>
|
||||
<div class="fragment"><div class="line"><span class="lineno"> 65</span> {</div>
|
||||
<div class="line"><span class="lineno"> 66</span> <span class="keywordflow">if</span> (low > high || qlow > high || low > qhigh) {</div>
|
||||
<div class="line"><span class="lineno"> 67</span> <span class="keywordflow">return</span> 0;</div>
|
||||
@@ -392,12 +403,7 @@ Here is the call graph for this function:</div>
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||||
<div class="line"><span class="lineno"> 86</span> <span class="keywordflow">return</span> <a class="code hl_function" href="#a423a97ea0c7ea6e33b5844a6858d902d">query</a>(segtree, lazy, qlow, qhigh, low, mid, 2 * pos + 1) +</div>
|
||||
<div class="line"><span class="lineno"> 87</span> <a class="code hl_function" href="#a423a97ea0c7ea6e33b5844a6858d902d">query</a>(segtree, lazy, qlow, qhigh, mid + 1, high, 2 * pos + 2);</div>
|
||||
<div class="line"><span class="lineno"> 88</span>}</div>
|
||||
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||||
<div class="center"><iframe scrolling="no" frameborder="0" src="../../d2/d45/segtree_8cpp_a423a97ea0c7ea6e33b5844a6858d902d_cgraph.svg" width="64" height="60"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
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<a id="aa8dca7b867074164d5f45b0f3851269d" name="aa8dca7b867074164d5f45b0f3851269d"></a>
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||||
@@ -425,11 +431,13 @@ Here is the call graph for this function:</div>
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||||
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||||
<p>Self-test implementation. </p>
|
||||
<dl class="section return"><dt>Returns</dt><dd>void </dd></dl>
|
||||
|
||||
<p class="definition">Definition at line <a class="el" href="../../d2/d45/segtree_8cpp_source.html#l00147">147</a> of file <a class="el" href="../../d2/d45/segtree_8cpp_source.html">segtree.cpp</a>.</p>
|
||||
<div class="fragment"><div class="line"><span class="lineno"> 147</span> {</div>
|
||||
<div class="line"><span class="lineno"> 148</span> <span class="keyword">auto</span> <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/algorithm/max.html">max</a> = <span class="keyword">static_cast<</span>int64_t<span class="keyword">></span>(2 * <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/math/pow.html">pow</a>(2, <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/math/ceil.html">ceil</a>(log2(7))) - 1);</div>
|
||||
<div class="line"><span class="lineno"> 148</span> <span class="keyword">auto</span> max = <span class="keyword">static_cast<</span>int64_t<span class="keyword">></span>(2 * pow(2, ceil(log2(7))) - 1);</div>
|
||||
<div class="line"><span class="lineno"> 149</span> assert(max == 15);</div>
|
||||
<div class="line"><span class="lineno"> 150</span> </div>
|
||||
<div class="line"><span class="lineno"> 151</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector<int64_t></a> arr{1, 2, 3, 4, 5, 6, 7}, lazy(max), segtree(max);</div>
|
||||
<div class="line"><span class="lineno"> 151</span> std::vector<int64_t> arr{1, 2, 3, 4, 5, 6, 7}, lazy(max), segtree(max);</div>
|
||||
<div class="line"><span class="lineno"> 152</span> <a class="code hl_function" href="#ae752659b7c1719d68fdb2ca538a93696">ConsTree</a>(arr, &segtree, 0, 7 - 1, 0);</div>
|
||||
<div class="line"><span class="lineno"> 153</span> </div>
|
||||
<div class="line"><span class="lineno"> 154</span> assert(<a class="code hl_function" href="#a423a97ea0c7ea6e33b5844a6858d902d">query</a>(&segtree, &lazy, 1, 5, 0, 7 - 1, 0) == 2 + 3 + 4 + 5 + 6);</div>
|
||||
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||||
<div class="line"><span class="lineno"> 159</span> <a class="code hl_function" href="#abd3e818681fb2e29cf08f4f60f82c8e0">update</a>(&segtree, &lazy, 0, 6, -2, 0, 7 - 1, 0);</div>
|
||||
<div class="line"><span class="lineno"> 160</span> assert(<a class="code hl_function" href="#a423a97ea0c7ea6e33b5844a6858d902d">query</a>(&segtree, &lazy, 0, 4, 0, 7 - 1, 0) == -1 + 0 + 2 + 3 + 4);</div>
|
||||
<div class="line"><span class="lineno"> 161</span>}</div>
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<div class="center"><iframe scrolling="no" frameborder="0" src="../../d2/d45/segtree_8cpp_aa8dca7b867074164d5f45b0f3851269d_cgraph.svg" width="180" height="207"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
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||||
<td class="memname">void update </td>
|
||||
<td>(</td>
|
||||
<td class="paramtype"><a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a>< int64_t > *</td> <td class="paramname"><span class="paramname"><em>segtree</em></span>, </td>
|
||||
<td class="paramtype">std::vector< int64_t > *</td> <td class="paramname"><span class="paramname"><em>segtree</em></span>, </td>
|
||||
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||||
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||||
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||||
<td></td>
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||||
<td class="paramtype"><a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a>< int64_t > *</td> <td class="paramname"><span class="paramname"><em>lazy</em></span>, </td>
|
||||
<td class="paramtype">std::vector< int64_t > *</td> <td class="paramname"><span class="paramname"><em>lazy</em></span>, </td>
|
||||
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||||
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||||
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||||
<dl class="section return"><dt>Returns</dt><dd>void </dd></dl>
|
||||
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||||
<p class="definition">Definition at line <a class="el" href="../../d2/d45/segtree_8cpp_source.html#l00103">103</a> of file <a class="el" href="../../d2/d45/segtree_8cpp_source.html">segtree.cpp</a>.</p>
|
||||
<div class="fragment"><div class="line"><span class="lineno"> 105</span> {</div>
|
||||
<div class="line"><span class="lineno"> 106</span> <span class="keywordflow">if</span> (low > high) {</div>
|
||||
<div class="line"><span class="lineno"> 107</span> <span class="keywordflow">return</span>;</div>
|
||||
@@ -548,12 +553,7 @@ Here is the call graph for this function:</div>
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<div class="line"><span class="lineno"> 138</span> <a class="code hl_function" href="#abd3e818681fb2e29cf08f4f60f82c8e0">update</a>(segtree, lazy, start, end, delta, mid + 1, high, 2 * pos + 2);</div>
|
||||
<div class="line"><span class="lineno"> 139</span> (*segtree)[pos] = (*segtree)[2 * pos + 1] + (*segtree)[2 * pos + 2];</div>
|
||||
<div class="line"><span class="lineno"> 140</span>}</div>
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@@ -1,4 +0,0 @@
|
||||
<map id="query" name="query">
|
||||
<area shape="rect" id="Node000001" title="Returns the sum of all elements in a range." alt="" coords="5,29,59,55"/>
|
||||
<area shape="poly" id="edge1_Node000001_Node000001" title=" " alt="" coords="21,29,20,12,25,5,32,3,40,6,44,12,39,15,36,10,32,8,28,9,25,13,26,29"/>
|
||||
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|
||||
@@ -1 +0,0 @@
|
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4beb5565895e9cc3a907595a928822dd
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|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<div class="headertitle"><div class="title">segtree.cpp</div></div>
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<a href="../../d2/d45/segtree_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span> </div>
|
||||
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include <cassert></span> </div>
|
||||
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include <cmath></span> </div>
|
||||
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#include <cstdint></span> </div>
|
||||
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#include <iostream></span> </div>
|
||||
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#include <vector></span> </div>
|
||||
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> </div>
|
||||
<div class="foldopen" id="foldopen00038" data-start="{" data-end="}">
|
||||
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"><a class="line" href="../../d2/d45/segtree_8cpp.html#ae752659b7c1719d68fdb2ca538a93696"> 38</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#ae752659b7c1719d68fdb2ca538a93696">ConsTree</a>(<span class="keyword">const</span> std::vector<int64_t> &arr, std::vector<int64_t> *segtree,</div>
|
||||
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> uint64_t low, uint64_t high, uint64_t pos) {</div>
|
||||
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="keywordflow">if</span> (low == high) {</div>
|
||||
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> (*segtree)[pos] = arr[low];</div>
|
||||
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> <span class="keywordflow">return</span>;</div>
|
||||
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> }</div>
|
||||
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> </div>
|
||||
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> uint64_t mid = (low + high) / 2;</div>
|
||||
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#ae752659b7c1719d68fdb2ca538a93696">ConsTree</a>(arr, segtree, low, mid, 2 * pos + 1);</div>
|
||||
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#ae752659b7c1719d68fdb2ca538a93696">ConsTree</a>(arr, segtree, mid + 1, high, 2 * pos + 2);</div>
|
||||
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> (*segtree)[pos] = (*segtree)[2 * pos + 1] + (*segtree)[2 * pos + 2];</div>
|
||||
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span>}</div>
|
||||
</div>
|
||||
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> </div>
|
||||
<div class="foldopen" id="foldopen00063" data-start="{" data-end="}">
|
||||
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"><a class="line" href="../../d2/d45/segtree_8cpp.html#a423a97ea0c7ea6e33b5844a6858d902d"> 63</a></span>int64_t <a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#a423a97ea0c7ea6e33b5844a6858d902d">query</a>(std::vector<int64_t> *segtree, std::vector<int64_t> *lazy,</div>
|
||||
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> uint64_t qlow, uint64_t qhigh, uint64_t low, uint64_t high,</div>
|
||||
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> uint64_t pos) {</div>
|
||||
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="keywordflow">if</span> (low > high || qlow > high || low > qhigh) {</div>
|
||||
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="keywordflow">return</span> 0;</div>
|
||||
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> }</div>
|
||||
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> </div>
|
||||
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keywordflow">if</span> ((*lazy)[pos] != 0) {</div>
|
||||
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> (*segtree)[pos] += (*lazy)[pos] * (high - low + 1);</div>
|
||||
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> </div>
|
||||
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> <span class="keywordflow">if</span> (low != high) {</div>
|
||||
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> (*lazy)[2 * pos + 1] += (*lazy)[pos];</div>
|
||||
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> (*lazy)[2 * pos + 2] += (*lazy)[pos];</div>
|
||||
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> }</div>
|
||||
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> (*lazy)[pos] = 0;</div>
|
||||
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> }</div>
|
||||
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> </div>
|
||||
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> <span class="keywordflow">if</span> (qlow <= low && qhigh >= high) {</div>
|
||||
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="keywordflow">return</span> (*segtree)[pos];</div>
|
||||
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> }</div>
|
||||
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> </div>
|
||||
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> uint64_t mid = (low + high) / 2;</div>
|
||||
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> </div>
|
||||
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="keywordflow">return</span> <a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#a423a97ea0c7ea6e33b5844a6858d902d">query</a>(segtree, lazy, qlow, qhigh, low, mid, 2 * pos + 1) +</div>
|
||||
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#a423a97ea0c7ea6e33b5844a6858d902d">query</a>(segtree, lazy, qlow, qhigh, mid + 1, high, 2 * pos + 2);</div>
|
||||
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span>}</div>
|
||||
</div>
|
||||
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> </div>
|
||||
<div class="foldopen" id="foldopen00103" data-start="{" data-end="}">
|
||||
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"><a class="line" href="../../d2/d45/segtree_8cpp.html#abd3e818681fb2e29cf08f4f60f82c8e0"> 103</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#abd3e818681fb2e29cf08f4f60f82c8e0">update</a>(std::vector<int64_t> *segtree, std::vector<int64_t> *lazy,</div>
|
||||
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> int64_t start, int64_t end, int64_t delta, uint64_t low,</div>
|
||||
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> uint64_t high, uint64_t pos) {</div>
|
||||
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> <span class="keywordflow">if</span> (low > high) {</div>
|
||||
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> <span class="keywordflow">return</span>;</div>
|
||||
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> }</div>
|
||||
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> </div>
|
||||
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> <span class="keywordflow">if</span> ((*lazy)[pos] != 0) {</div>
|
||||
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> (*segtree)[pos] += (*lazy)[pos] * (high - low + 1);</div>
|
||||
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> </div>
|
||||
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> <span class="keywordflow">if</span> (low != high) {</div>
|
||||
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> (*lazy)[2 * pos + 1] += (*lazy)[pos];</div>
|
||||
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> (*lazy)[2 * pos + 2] += (*lazy)[pos];</div>
|
||||
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> }</div>
|
||||
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> (*lazy)[pos] = 0;</div>
|
||||
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> }</div>
|
||||
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> </div>
|
||||
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> <span class="keywordflow">if</span> (start > high || end < low) {</div>
|
||||
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> <span class="keywordflow">return</span>;</div>
|
||||
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> }</div>
|
||||
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> </div>
|
||||
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="keywordflow">if</span> (start <= low && end >= high) {</div>
|
||||
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> (*segtree)[pos] += delta * (high - low + 1);</div>
|
||||
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> </div>
|
||||
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> <span class="keywordflow">if</span> (low != high) {</div>
|
||||
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> (*lazy)[2 * pos + 1] += delta;</div>
|
||||
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> (*lazy)[2 * pos + 2] += delta;</div>
|
||||
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> }</div>
|
||||
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> </div>
|
||||
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <span class="keywordflow">return</span>;</div>
|
||||
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> }</div>
|
||||
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> </div>
|
||||
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> uint64_t mid = (low + high) / 2;</div>
|
||||
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> </div>
|
||||
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#abd3e818681fb2e29cf08f4f60f82c8e0">update</a>(segtree, lazy, start, end, delta, low, mid, 2 * pos + 1);</div>
|
||||
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> <a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#abd3e818681fb2e29cf08f4f60f82c8e0">update</a>(segtree, lazy, start, end, delta, mid + 1, high, 2 * pos + 2);</div>
|
||||
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> (*segtree)[pos] = (*segtree)[2 * pos + 1] + (*segtree)[2 * pos + 2];</div>
|
||||
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span>}</div>
|
||||
</div>
|
||||
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> </div>
|
||||
<div class="foldopen" id="foldopen00147" data-start="{" data-end="}">
|
||||
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"><a class="line" href="../../d2/d45/segtree_8cpp.html#aa8dca7b867074164d5f45b0f3851269d"> 147</a></span><span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a>() {</div>
|
||||
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> <span class="keyword">auto</span> max = <span class="keyword">static_cast<</span>int64_t<span class="keyword">></span>(2 * pow(2, ceil(log2(7))) - 1);</div>
|
||||
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> assert(max == 15);</div>
|
||||
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> </div>
|
||||
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> std::vector<int64_t> arr{1, 2, 3, 4, 5, 6, 7}, lazy(max), segtree(max);</div>
|
||||
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> <a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#ae752659b7c1719d68fdb2ca538a93696">ConsTree</a>(arr, &segtree, 0, 7 - 1, 0);</div>
|
||||
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> </div>
|
||||
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> assert(<a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#a423a97ea0c7ea6e33b5844a6858d902d">query</a>(&segtree, &lazy, 1, 5, 0, 7 - 1, 0) == 2 + 3 + 4 + 5 + 6);</div>
|
||||
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> </div>
|
||||
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> <a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#abd3e818681fb2e29cf08f4f60f82c8e0">update</a>(&segtree, &lazy, 2, 4, 1, 0, 7 - 1, 0);</div>
|
||||
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> assert(<a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#a423a97ea0c7ea6e33b5844a6858d902d">query</a>(&segtree, &lazy, 1, 5, 0, 7 - 1, 0) == 2 + 4 + 5 + 6 + 6);</div>
|
||||
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> </div>
|
||||
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> <a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#abd3e818681fb2e29cf08f4f60f82c8e0">update</a>(&segtree, &lazy, 0, 6, -2, 0, 7 - 1, 0);</div>
|
||||
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> assert(<a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#a423a97ea0c7ea6e33b5844a6858d902d">query</a>(&segtree, &lazy, 0, 4, 0, 7 - 1, 0) == -1 + 0 + 2 + 3 + 4);</div>
|
||||
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span>}</div>
|
||||
</div>
|
||||
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> </div>
|
||||
<div class="foldopen" id="foldopen00168" data-start="{" data-end="}">
|
||||
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"><a class="line" href="../../d2/d45/segtree_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4"> 168</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a>() {</div>
|
||||
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> <a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a>(); <span class="comment">// run self-test implementations</span></div>
|
||||
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> </div>
|
||||
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> std::cout << <span class="stringliteral">"Enter number of elements: "</span>;</div>
|
||||
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> </div>
|
||||
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> uint64_t n = 0;</div>
|
||||
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> std::cin >> n;</div>
|
||||
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> </div>
|
||||
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> <span class="keyword">auto</span> max = <span class="keyword">static_cast<</span>uint64_t<span class="keyword">></span>(2 * pow(2, ceil(log2(n))) - 1);</div>
|
||||
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> std::vector<int64_t> arr(n), lazy(max), segtree(max);</div>
|
||||
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> </div>
|
||||
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> <span class="keywordtype">int</span> choice = 0;</div>
|
||||
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> std::cout << <span class="stringliteral">"\nDo you wish to enter each number?:\n"</span></div>
|
||||
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> <span class="stringliteral">"1: Yes\n"</span></div>
|
||||
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> <span class="stringliteral">"0: No (default initialize them to 0)\n"</span>;</div>
|
||||
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> </div>
|
||||
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> std::cin >> choice;</div>
|
||||
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> <span class="keywordflow">if</span> (choice == 1) {</div>
|
||||
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> std::cout << <span class="stringliteral">"Enter "</span> << n << <span class="stringliteral">" numbers:\n"</span>;</div>
|
||||
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 1; i <= n; i++) {</div>
|
||||
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> std::cout << i << <span class="stringliteral">": "</span>;</div>
|
||||
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> std::cin >> arr[i];</div>
|
||||
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> }</div>
|
||||
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> }</div>
|
||||
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> </div>
|
||||
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> <a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#ae752659b7c1719d68fdb2ca538a93696">ConsTree</a>(arr, &segtree, 0, n - 1, 0);</div>
|
||||
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> </div>
|
||||
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> <span class="keywordflow">do</span> {</div>
|
||||
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> std::cout << <span class="stringliteral">"\nMake your choice:\n"</span></div>
|
||||
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> <span class="stringliteral">"1: Range update (input)\n"</span></div>
|
||||
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> <span class="stringliteral">"2: Range query (output)\n"</span></div>
|
||||
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> <span class="stringliteral">"0: Exit\n"</span>;</div>
|
||||
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> std::cin >> choice;</div>
|
||||
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> </div>
|
||||
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> <span class="keywordflow">if</span> (choice == 1) {</div>
|
||||
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> std::cout << <span class="stringliteral">"Enter 1-indexed lower bound, upper bound & value:\n"</span>;</div>
|
||||
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span> </div>
|
||||
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span> uint64_t p = 1, q = 1, v = 0;</div>
|
||||
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> std::cin >> p >> q >> v;</div>
|
||||
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> <a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#abd3e818681fb2e29cf08f4f60f82c8e0">update</a>(&segtree, &lazy, p - 1, q - 1, v, 0, n - 1, 0);</div>
|
||||
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (choice == 2) {</div>
|
||||
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> std::cout << <span class="stringliteral">"Enter 1-indexed lower bound & upper bound:\n"</span>;</div>
|
||||
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> </div>
|
||||
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> uint64_t p = 1, q = 1;</div>
|
||||
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span> std::cin >> p >> q;</div>
|
||||
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> std::cout << <a class="code hl_function" href="../../d2/d45/segtree_8cpp.html#a423a97ea0c7ea6e33b5844a6858d902d">query</a>(&segtree, &lazy, p - 1, q - 1, 0, n - 1, 0);</div>
|
||||
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span> std::cout << <span class="stringliteral">"\n"</span>;</div>
|
||||
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> }</div>
|
||||
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span> } <span class="keywordflow">while</span> (choice > 0);</div>
|
||||
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span> </div>
|
||||
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span> <span class="keywordflow">return</span> 0;</div>
|
||||
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span>}</div>
|
||||
</div>
|
||||
<div class="ttc" id="asegtree_8cpp_html_a423a97ea0c7ea6e33b5844a6858d902d"><div class="ttname"><a href="../../d2/d45/segtree_8cpp.html#a423a97ea0c7ea6e33b5844a6858d902d">query</a></div><div class="ttdeci">int64_t query(std::vector< int64_t > *segtree, std::vector< int64_t > *lazy, uint64_t qlow, uint64_t qhigh, uint64_t low, uint64_t high, uint64_t pos)</div><div class="ttdoc">Returns the sum of all elements in a range.</div><div class="ttdef"><b>Definition</b> <a href="#l00063">segtree.cpp:63</a></div></div>
|
||||
<div class="ttc" id="asegtree_8cpp_html_aa8dca7b867074164d5f45b0f3851269d"><div class="ttname"><a href="../../d2/d45/segtree_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a></div><div class="ttdeci">static void test()</div><div class="ttdoc">Self-test implementation.</div><div class="ttdef"><b>Definition</b> <a href="#l00147">segtree.cpp:147</a></div></div>
|
||||
<div class="ttc" id="asegtree_8cpp_html_abd3e818681fb2e29cf08f4f60f82c8e0"><div class="ttname"><a href="../../d2/d45/segtree_8cpp.html#abd3e818681fb2e29cf08f4f60f82c8e0">update</a></div><div class="ttdeci">void update(std::vector< int64_t > *segtree, std::vector< int64_t > *lazy, int64_t start, int64_t end, int64_t delta, uint64_t low, uint64_t high, uint64_t pos)</div><div class="ttdoc">Updates a range of the segment tree.</div><div class="ttdef"><b>Definition</b> <a href="#l00103">segtree.cpp:103</a></div></div>
|
||||
<div class="ttc" id="asegtree_8cpp_html_ae66f6b31b5ad750f1fe042a706a4e3d4"><div class="ttname"><a href="../../d2/d45/segtree_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a></div><div class="ttdeci">int main()</div><div class="ttdoc">Main function.</div><div class="ttdef"><b>Definition</b> <a href="#l00168">segtree.cpp:168</a></div></div>
|
||||
<div class="ttc" id="asegtree_8cpp_html_ae752659b7c1719d68fdb2ca538a93696"><div class="ttname"><a href="../../d2/d45/segtree_8cpp.html#ae752659b7c1719d68fdb2ca538a93696">ConsTree</a></div><div class="ttdeci">void ConsTree(const std::vector< int64_t > &arr, std::vector< int64_t > *segtree, uint64_t low, uint64_t high, uint64_t pos)</div><div class="ttdoc">for std::vector</div><div class="ttdef"><b>Definition</b> <a href="#l00038">segtree.cpp:38</a></div></div>
|
||||
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