#include struct point{ int x,y; }; int nmax=0; point max; int b[11][11]; bool a[11][11]; int main(){ freopen("mat.in","r",stdin); freopen("mat.out","w",stdout); int n,m; scanf("%d %d",&n,&m); for (int i=1;i<=n;i++) for (int j=1;j<=m;j++) scanf("%d",&a[i][j]); for (int i=1;i<=n;i++) for (int j=1;j<=m;j++){ b[i][j]=b[i-1][j-1]+a[i][j]*a[i-1][j]*a[i][j-1]; if (nmax