func_code_string: #include <bits/stdc++.h>   using namespace std;   const int MOD = 1000000007;   const int N = 1000005;   const double PI = 4 * atan(1);   long long m, x, y, n, p, z, k;   long long h1, m1, h2, m2;   char c, cc;   int main() {     ios::sync_with_stdio(0);     cin >> h1 >> c >> m1 >> h2 >> cc >> m2;     x = (h2 - h1) * 60 + m2 - m1;     x /= 2;     x += m1;     if ((h1 + x / 60) < 10) cout << 0;     cout << h1 + x / 60 <<  : ;     if (((x) % 60 < 10)) cout << 0;     cout << x % 60;     return 0;   }   