cpp tempaltes

templates/cpp/file.cpp

@@ -0,0 +1,23 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+typedef long long ll;
+typedef pair<int, int> pii;
+typedef vector<int> vi;
+
+int main() {
+  freopen("problem.in", "r", stdin);   // ← change problem name
+  freopen("problem.out", "w", stdout); // ← change problem name
+
+  ios_base::sync_with_stdio(false);
+  cin.tie(nullptr);
+
+  // Write code here
+
+  int n;
+  cin >> n;
+
+  cout << n << "\n";
+
+  return 0;
+}