#include <stdio.h>
#include <stdlib.h>

int main(void)
{
    int **matrix;
    int i, j, n, m;

   scanf("%d",&n);
   scanf("%d",&m);

    matrix = (int **)malloc(sizeof(int *) * n);

    for (i = 0; i < n; i++) {
        matrix[i] = (int *)malloc(sizeof(int) * m);
    }

    for (i = 0; i < n; i++) {
        for (j = 0; j < m; j++) {
            matrix[i][j] = i * m + j;
            printf("%d\n", matrix[i][j]);
        }
    }

    for (i = 0; i < n; i++) {
        free(matrix[i]);
    }

    free(matrix);

    return 0;
}