#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, m, i, j;
  scanf("%d %d", &n, &m);
  if (m == 1) {
    if (n == 1)
      printf("YES\n1");
    else if (n < 4)
      printf("NO\n");
    else {
      printf("YES\n");
      for (i = 2; i <= n; i += 2) printf("%d\n", i);
      for (i = 1; i <= n; i += 2) printf("%d\n", i);
    }
  } else if (m == 2) {
    if (n < 4)
      printf("NO\n");
    else {
      printf("YES\n");
      if (n & 1) {
        for (i = 2; i <= n; i += 2) printf("%d %d\n", i * 2 - 3, i * 2);
        printf("%d %d\n", 2 * n - 1, 2);
        for (i = 2; i <= n; i += 2) printf("%d %d\n", i * 2 - 1, i * 2 + 2);
      } else {
        for (i = 2; i <= n; i += 2)
          printf("%d %d\n", i * 2 - 1, (n + 1 - i) * 2);
        for (i = 1; i <= n; i += 2)
          printf("%d %d\n", i * 2 - 1, (n + 1 - i) * 2);
      }
    }
  } else if (m == 3) {
    if (n < 3)
      printf("NO\n");
    else if (n == 3) {
      printf("YES\n5 3 7\n1 8 6\n9 4 2\n");
    } else {
      printf("YES\n");
      if (n & 1) {
        for (i = 2; i <= n; i += 2)
          printf("%d %d %d\n", i * 3 - 5, i * 3 - 1, i * 3 - 3);
        printf("%d %d %d\n", 3 * n - 2, 2, 3 * n);
        for (i = 2; i <= n; i += 2)
          printf("%d %d %d\n", i * 3 - 2, i * 3 + 2, i * 3);
      } else {
        for (i = 2; i <= n; i += 2)
          printf("%d %d %d\n", i * 3 - 2, (n + 1 - i) * 3 - 1, i * 3);
        for (i = 1; i <= n; i += 2)
          printf("%d %d %d\n", i * 3 - 2, (n + 1 - i) * 3 - 1, i * 3);
      }
    }
  } else {
    printf("YES\n");
    if (m & 1) {
      for (i = 0; i < n; i++) {
        if (i & 1) {
          for (j = 1; j <= m; j += 2) printf("%d ", j + i * m);
          for (j = 2; j <= m; j += 2) printf("%d ", j + i * m);
        } else {
          for (j = 2; j <= m; j += 2) printf("%d ", j + i * m);
          for (j = 1; j <= m; j += 2) printf("%d ", j + i * m);
        }
        printf("\n");
      }
    } else {
      for (i = 0; i < n; i++) {
        if (i & 1) {
          for (j = 2; j <= m; j += 2) printf("%d ", j + i * m);
          for (j = 1; j <= m; j += 2) printf("%d ", j + i * m);
        } else {
          for (j = m - 1; j > 0; j -= 2) printf("%d ", j + i * m);
          for (j = m; j > 0; j -= 2) printf("%d ", j + i * m);
        }
        printf("\n");
      }
    }
  }
}
