「codechefGRID」Sherlock and the Grid
这个纯模拟吧
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#include<iostream> #include<cstdio> #include<cstring> #include<cstdlib> #include<algorithm> #include<cmath> #include<set> #define ll long long using namespace std; inline int read() { int x=0,f=1;char ch=getchar(); while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();} while(ch>='0'&&ch<='9'){x=x*10+ch-'0';ch=getchar();} return x*f; } int T,n; char mp[1005][1005]; bool mark[1005][1005]; void solve() { int ans=0; memset(mark,0,sizeof(mark)); for(int i=1;i<=n;i++) { bool f=0,g=0; for(int j=n;j;j--) { if(mp[i][j]=='#')f=1; mark[i][j]|=f; } for(int j=n;j;j--) { if(mp[j][i]=='#')g=1; mark[j][i]|=g; } } for(int i=1;i<=n;i++) for(int j=1;j<=n;j++) if(!mark[i][j])ans++; printf("%d\n",ans); } int main() { T=read(); while(T--) { n=read(); for(int i=1;i<=n;i++) scanf("%s",mp[i]+1); solve(); } return 0; } |
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