Educational Codeforces Round 68 (Rated for Div. 2)---B

http://codeforces.com/contest/1194/problem/B

/* */
# include <bits/stdc++.h>
using namespace std;
 
int r[50005], c[50005];
string s[50005];
 
int main()
{
    int n, m, q;
    scanf("%d", &q);
    while( q-- )
    {
        scanf("%d %d", &n, &m);
        for(int i=0; i<n; i++ )
            cin>>s[i];
        int cnt = 0;
        for( int i=0; i<n; i++ )
        {
            cnt=0;
            for( int j=0; j<m; j++ )
            {
                if( s[i][j]=='.' )
                    cnt++;
            }
            r[i] = cnt;
        }
        for( int j=0; j<m; j++ )
        {
            cnt = 0;
            for( int i=0; i<n; i++ )
            {
                if( s[i][j]=='.' )
                    cnt++;
            }
            c[j] = cnt;
        }
        int ans = 50005;
        for( int i=0; i<n; i++ )
        {
            for(int j=0; j<m; j++ )
            {
                int temp = r[i]+c[j];
                if( s[i][j]=='.' )
                    temp--;
                ans = min(ans, temp);
            }
        }
        printf("%d\n", ans);
    }
    return 0;
}