func_code_string: #include <bits/stdc++.h>   using namespace std;   int a[102][102];   int main() {     int n, m;     cin >> n >> m;     int sum = 0;     for (int i = 0; i < m; i++) {       int x, y, c;       cin >> x >> y >> c;       a[x - 1][y - 1] = c;       sum += c;     }     for (int i = 0; i < n; i++) {       for (int i = 0; i < n; i++)         for (int j = 0; j < n; j++) {           int k = 0;           while (k < n && a[i][j] > 0) {             if (a[j][k] > 0) {               int t = min(a[i][j], a[j][k]);               a[j][k] -= t;               a[i][j] -= t;               a[i][k] += t;               sum -= t;             }             k++;           }         }       for (int i = 0; i < n; i++) {         sum -= a[i][i];         a[i][i] = 0;       }     }     cout << sum << endl;     return 0;   }   