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 s;       cin >> s;       int ans = 0;       int cnt = 0;       int mini = min(c0, c1);       for (int i = 0; i < n; i++) {         if (s[i] ==  1 ) {           ans += c1;           if (c1 != mini) cnt++;         } else {           ans += c0;           if (c0 != mini) cnt++;         }       }       ans = min(ans, ((n * mini) + (h * cnt)));       cout << ans << endl;     }   }   