func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 50010;   string g[N];   int q, n, m, ro[N], co[N];   int main() {     cin.tie(0);     ios_base::sync_with_stdio(0);     cin >> q;     while (q--) {       cin >> n >> m;       for (int i = 0; i < n; ++i) cin >> g[i];       for (int i = 0; i < n; ++i) {         ro[i] = 0;         for (int j = 0; j < m; ++j) ro[i] += g[i][j] ==  . ;       }       for (int i = 0; i < m; ++i) {         co[i] = 0;         for (int j = 0; j < n; ++j) co[i] += g[j][i] ==  . ;       }       int ans = n * m;       for (int i = 0; i < n; ++i) {         for (int j = 0; j < m; ++j) {           int here = ro[i] + co[j] - (g[i][j] ==  . );           ans = min(ans, here);         }       }       cout << ans <<   n ;     }     return 0;   }   