#include <bits/stdc++.h>
using namespace std;
int N , K , A[1005][1005] ;
ifstream f ("tablete.in") ;
ofstream g ("tablete.out") ;
int main()
{
    f >> N >> K ;
    if (N % 2 == 0 && K % 2 == 0)
    {
        for (int i = 1 ; i <= N ; ++i)
        {
            for (int j = (i-1)*N + 1; j <= i*N ; ++j)
                g << j << ' ';
            g << '\n' ;
        }
    }

}