【2018年全国多校算法寒假训练营练习比赛(第四场)-D】小明的挖矿之旅

#include<bits/stdc++.h>
using namespace std;
char mp[1004][1004];
int main()
{
    int n, m, i, j;
    while(~scanf("%d%d", &m, &n))
    {
        int ans = 0, sum = 0;
        for(i = 0; i < m; i++) scanf("%s", mp[i]);
        for(i = 0; i < m ; i++)
            for(j = 0; j < n; j++)
            {
                if(mp[i][j] == ‘.‘)
                {
                    sum++;
                    if((mp[i+1][j] == ‘#‘ || i == m-1) && (mp[i][j+1] == ‘#‘ || j == n-1))
                        ans++;
                }
            }
        if(sum == 1) ans = 0;
        printf("%d\n", ans);
    }
    return 0;
}