```
if ((s[i+k-1][j+k-1]-s[i+k-1][j-1]-s[i-1][j+k-1])==k*k)
```
是不是这句的问题
by zhutier @ 2018-11-02 20:57:33
#include<cstdio>
#include<algorithm>
using namespace std;
int n,m;
int k;
int a[101][101];
int maxx;
int main()
{
scanf("%d%d",&n,&m);
for(int i=1;i<=n;i++)
{
for(int j=1;j<=m;j++)
{
scanf("%d",&k);
if(k)
{
a[i][j]=min(a[i-1][j],min(a[i-1][j-1],a[i][j-1]))+1;
}
if(a[i][j]>maxx)
{
maxx=a[i][j];
}
}
}
printf("%d\n",maxx);
return 0;
}
by nobalei @ 2019-03-11 20:52:38