func_code_string: #include <bits/stdc++.h>   using namespace std;   double a[10100];   int main() {     int n, m;     cin >> n >> m;     double ans = 0.0;     for (int i = 1; i <= n; i++) cin >> a[i];     for (int i = 1; i <= m; i++) {       int aa, bb;       double cc;       cin >> aa >> bb >> cc;       ans = max((a[aa] + a[bb]) / cc, ans);     }     cout << fixed << setprecision(15) << ans << endl;     return 0;   }   