#include #include typedef long long int int64; #define POS(i,j) ((i)*(m+1)+(j)) void run(void){ int n,m; scanf("%d%d",&n,&m); int64 *a=(int64 *)calloc((m+1)*(m+1),sizeof(int64)); int i,j,k,l; for(i=1;i<=m;i++){ for(j=1;j<=m;j++){ scanf("%lld",a+POS(i,j)); a[POS(i,j)]+=a[POS(i-1,j)]+a[POS(i,j-1)]-a[POS(i-1,j-1)]; } } const int p=65; int *cnt=(int *)calloc((m+1)*(m+1),sizeof(int)); for(i=1;i<=m;i++){ for(j=i;j<=m && j=1;i--){ for(j=x;j<=m && j=1;k--){ for(l=y;l<=m && l