From 1e8b4a754ac7a0100fa9349a2a678842ef94de8c Mon Sep 17 00:00:00 2001
From: Mayank17M <mamgain.mayank01@gmail.com>
Date: Sun, 5 Sep 2021 16:18:43 +0530
Subject: [PATCH] Change header and add reference in Travelling Salesman
 problem

---
 graph/travelling_salesman_problem.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/graph/travelling_salesman_problem.cpp b/graph/travelling_salesman_problem.cpp
index 24bead509..44a61d387 100644
--- a/graph/travelling_salesman_problem.cpp
+++ b/graph/travelling_salesman_problem.cpp
@@ -4,7 +4,12 @@
 // the origin city?
 // This is the naive approach to solve this problem.
 
-#include <bits/stdc++.h>
+// References:
+// https://en.wikipedia.org/wiki/Travelling_salesman_problem
+
+#include <algorithm>
+#include <iostream>
+#include <vector>
 using namespace std;
 
 int TravellingSalesmanProblem(vector<vector<int>> cities, int src, int V) {