#include <conio.h>
#include <iostream.h>
void main() {
  int n, m, k = 1, i, j;
  cin >> m >> n;
  int a[25][25];
  k = m * n;
  for (i = 1; i <= m; i++)
    for (j = 1; j <= n; j++)
      a[i][j] = k--;
  for (i = 1; i <= m; i++) {
    for (j = 1; j <= n; j++)
      cout << a[i][j] << " ";
    cout << endl;
  }
}