func_code_string: #include <bits/stdc++.h>   using namespace std;   int incoming[110];   int outgoing[110];   int main(int argc, const char* argv[]) {     int n, m;     cin >> n >> m;     int a, b, c;     for (int i = 0; i < m; i++) {       cin >> a >> b >> c;       incoming[b] += c;       outgoing[a] += c;     }     int ans = 0;     for (int i = 1; i <= n; i++) {       if (outgoing[i] - incoming[i] > 0) ans += outgoing[i] - incoming[i];     }     cout << ans;   }   