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code_segment/xiaohongshu2.cpp

@@ -0,0 +1,90 @@
+#include<vector>
+#include<iostream>
+#include<sstream>
+using namespace std;
+
+
+int main(){
+    
+    int n,m;
+    cin>>n>>m;
+    vector<vector<int>> vec(n,vector<int>(m,0));
+    int x,y,d=0;
+    for(int i=0;i<n;i++){
+        for(int j=0;j<m;j++){
+            char c = cin.get();
+            if(c=='B'){
+                vec[i][j]=0;
+            }
+            else if(c=='O'){
+                vec[i][j]=1;
+            }
+            else if(c=='R'){
+                vec[i][j]=2;
+                x=i,y=j;
+            }
+            else if(c=='\n'){
+                j--;
+            }
+        }
+    }
+    int num=0;
+    cin>>num;
+    cin.ignore();
+    int ox=x,oy=y;
+    while(num--){
+        string line;
+        getline(cin,line);
+        if(line=="Turn right"){
+            d=(d+1)%4;
+        }
+        else if(line=="Turn left"){
+            d=((d-1)+4)%4;
+        }
+        else if(line[0]=='F'){
+            istringstream is(line);
+            string temp;
+            is>>temp;
+            int step;
+            is>>step;
+            
+                while(step--){
+                    if(d==0){
+                        if(x-1>=0 && vec[x-1][y]==0){
+                            x=x-1;
+                        }
+                        else{
+                            break;
+                        }
+                    }
+                    else if(d==1){
+                        if(y+1<m && vec[x][y+1]==0){
+                            y = y+1;
+                        }
+                        else{
+                            break;
+                        }
+                    }
+                    else if(d==2){
+                        if(x+1<n && vec[x+1][y]==0){
+                            x=x+1;
+                        }
+                        else{
+                            break;
+                        }
+                    }
+                    else if(d==3){
+                        if(y-1>0 && vec[x][y-1]==0){
+                            y=y-1;
+                        }
+                        else{
+                            break;
+                        }
+                    }
+
+                }
+        }
+    }
+    cout<<x-ox<<y-oy<<endl;
+    return 0;
+}