func_code_string: #include <bits/stdc++.h>   using namespace std;   bool f[501][501];   long long P[501];   int main(int argc, char *argv[]) {     int N, M, i, u, v, k, l;     cin >> N >> M;     for (i = 1; i <= N; i++) cin >> P[i];     for (i = 1; i <= N; i++)       for (k = 1; k <= N; k++) f[i][k] = false;     for (i = 1; i <= M; i++) {       cin >> u >> v;       f[u][v] = true;       f[v][u] = true;     }     long long mini = (1 << 29);     long long sum;     for (int i = 1; i <= N - 2; i++) {       for (int j = i + 1; j <= N - 1; j++) {         for (int k = j + 1; k <= N; k++) {           if (f[i][j] && f[j][k] && f[k][i]) {             sum = P[i] + P[j] + P[k];             if (sum < mini) mini = sum;           }         }       }     }     if (mini != (1 << 29))       cout << mini << endl;     else       cout << -1 << endl;     return 0;   }   