func_code_string: #include <bits/stdc++.h>   using namespace std;   class TaskC {    public:     void solve(std::istream& in, std::ostream& out);   };   void TaskC::solve(std::istream& in, std::ostream& out) {     int n;     in >> n;     int a[310][310];     for (int i = 0; i < n; i++) {       for (int j = 0; j < n; ++j) {         in >> a[i][j];       }     }     int k;     in >> k;     while (k--) {       int x, y, c;       in >> x >> y >> c;       --x, --y;       a[x][y] = min(a[x][y], c);       a[y][x] = min(a[y][x], c);       for (int i = 0; i < n; ++i) {         for (int j = 0; j < n; ++j) {           a[i][j] = min(a[i][j], min(a[i][x] + a[x][y] + a[y][j],                                      a[i][y] + a[y][x] + a[x][j]));         }       }       long long ans = 0;       for (int i = 0; i < n; ++i) {         for (int j = 0; j < i; ++j) ans += (long long)a[i][j];       }       out << ans <<    ;     }   };   int main() {     TaskC solver;     std::istream& in(std::cin);     std::ostream& out(std::cout);     solver.solve(in, out);     return 0;   }   