func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       int n, c0, c1, h;       cin >> n >> c0 >> c1 >> h;       string second;       cin >> second;       int cost1 = 0, z = 0, o = 0;       for (int i = 0; i < second.length(); i++) {         if (second[i] ==  0 ) {           cost1 += c0;           z++;         } else {           cost1 += c1;           o++;         }       }       int cost2 = o * h + c0 * (second.length());       int cost3 = z * h + c1 * (second.length());       cout << min(cost1, min(cost2, cost3)) << endl;     }     return 0;   }   