func_code_string: #include <bits/stdc++.h>   using namespace std;   long long n, d[500][500], dist[500][500];   long long t, a, c, b;   int main() {     cin >> n;     for (long long i = 1; i <= n; i++) {       for (long long j = 1; j <= n; j++) {         cin >> d[i][j];         dist[i][j] = d[i][j];       }     }     long long tong;     cin >> t;     while (t--) {       cin >> a >> b >> c;       tong = 0;       dist[a][b] = dist[b][a] = min(dist[a][b], min(dist[b][a], c));       for (long long i = 1; i <= n; i++) {         for (long long j = 1; j <= n; j++) {           dist[i][j] = min(dist[i][j], min(dist[i][a] + c + dist[b][j],                                            dist[i][b] + c + dist[a][j]));         }       }       for (long long i = 1; i <= n; i++) {         for (long long j = i + 1; j <= n; j++) {           tong += dist[i][j];         }       }       cout << tong <<    ;     }   }   