#include <fstream>
#include <iostream>
#include <math.h>

using namespace std;

int main() {
    ifstream fin("tablete.in");
    ofstream fout("tablete.out");
    
    int n, k, l, c;
    
    fin >> n >> k;
    
    for (l=0; l<n; l++) {
        for (c=1; c<=n; c++) {
            fout << l*n+c << ' ';
        }
        fout << '\n';
    }
        
        
    fin.close();
    fout.close();
    return 0;
}