#include <fstream>
using namespace std;
ifstream in("tablete.in");
ofstream out("tablete.out");
int n,m,i,j,nr,ok;
int x[1001][1001];
int main()
{
    in>>n>>m;
    for(i=1; i<=n; i++)
        for(j=1; j<=m; j++)
        {
            nr++;
            if(ok==1) x[i][j]=nr-1,ok=0;
            else if(j==m && nr%2==0) x[i][j]=nr;
            else if(j==m && nr%2) x[i][j]=nr+1,ok=1;
            else x[i][j]=nr;
        }
    for(i=1; i<=n; i++)
        for(j=m+1; j<=n; j++)
        {
            nr++;
            if(ok==1) x[i][j]=nr-1,ok=0;
            else x[i][j]=nr;
        }
    for(i=1; i<=n; i++)
    {
        for(j=1; j<=n; j++)
            out<<x[i][j]<<" ";
        out<<"\n";
    }
}