func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     int t;     cin >> t;     while (t--) {       int n, m, x, y;       cin >> n >> m >> x >> y;       int arr[n][m];       for (int i = 0; i < n; i++)         for (int j = 0; j < m; j++) {           char c;           cin >> c;           if (c ==  * )             arr[i][j] = 0;           else             arr[i][j] = 1;         }       long int ans = 0;       for (int i = 0; i < n; i++) {         for (int j = 0; j < m; j++) {           if (arr[i][j] == 1) {             if (j + 1 < m && arr[i][j + 1] == 1) {               ans += min(2 * x, y);               j++;             } else               ans += x;           }         }       }       cout << ans << endl;     }   }   