#include <iostream>

using namespace std;

int main() {
    int n, m, k = 0, f, g;
    int a[100][100];

    cin >> n >> m;


    for (int i = 0; i < m; i++) {
        f = 0;
        g = i;
        while (f < n && g >= 0) {
            a[f][g] = k;
            k++;
            f++;
            g--;
        }
    }

    for (int i = 1; i < n; i++) {
        f = i;
        g = m - 1;
        while (f < n && g >= 0) {
            a[f][g] = k;
            k++;
            f++;
            g--;
        }
    }




    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++)
            cout << a[i][j] << ' ';

        cout << endl;
    }

    return 0;
}