func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 1e6 + 7;   string a[N];   int r[N], c[N];   int main() {     ios::sync_with_stdio(0);     cin.tie(0);     int t;     cin >> t;     while (t--) {       int n, m;       cin >> n >> m;       for (int i = 0; i <= n; i++) r[i] = 0;       for (int j = 0; j <= m; j++) c[j] = 0;       for (int i = 0; i < n; i++) cin >> a[i];       for (int i = 0; i < n; i++)         for (int j = 0; j < m; j++)           if (a[i][j] ==  . ) r[i]++, c[j]++;       int ans = 1e9 + 7;       for (int i = 0; i < n; i++)         for (int j = 0; j < m; j++) {           int cur = r[i] + c[j];           if (a[i][j] ==  . ) cur--;           ans = min(ans, cur);         }       cout << ans <<   n ;     }   }   