#include<cstdio>
#define N 2005
#define max(a,b) a>b?a:b
#define min(a,b) a<b?a:b
using namespace std;
int up[N][N],left[N][N],right[N][N],ansa,ansb,a[N][N],m,n;
int main(){
scanf("%d%d",&n,&m);
for(int i=1;i<=n;i++)
for(int j=1;j<=m;j++)
up[i][j]=1,left[i][j]=j,right[i][j]=j,scanf("%d",&a[i][j]);// up 初值，读入，left/right 最初值
}
