#include <bits/stdc++.h>
using namespace std;
int n, m;
vector<vector<int> > a, b;
void my_shuffle() {
  for (int i = 0; i < n; ++i) {
    int r = 0;
    for (int j = 1 - (m & 1); j < m; j += 2) b[i][r++] = a[i][j];
    for (int j = m & 1; j < m; j += 2) b[i][r++] = a[i][j];
  }
  int r = 0;
  for (int i = 1 - (n & 1); i < n; i += 2) a[r++] = b[i];
  for (int i = (n & 1); i < n; i += 2) a[r++] = b[i];
  b = a;
}
int main() {
  iostream::sync_with_stdio();
  cin >> n >> m;
  a.resize(n, vector<int>(m));
  b.resize(n, vector<int>(m));
  for (int i = 0; i < n; ++i) {
    for (int j = 0; j < m; ++j) {
      a[i][j] = i * m + j + 1;
    }
  }
  if (n >= 4 && m >= 4) {
    cout << "YES\n";
    my_shuffle();
  } else if ((n == 1 && m >= 4) || (n >= 4 && m == 1)) {
    cout << "YES\n";
    my_shuffle();
  } else if ((n == 2 && m >= 4) || (n >= 4 && m == 2)) {
    cout << "YES\n";
    my_shuffle();
    if (n == 2) {
      if (m & 1) {
        rotate(b[1].begin(), b[1].begin() + m - 1, b[1].end());
      } else {
        int i = 0, j = m - 1;
        while (i < j) {
          swap(b[1][i++ % m], b[1][j-- % m]);
        }
      }
    } else {
      if (n & 1) {
        int i = 0, j = n - 1;
        while (i < n - 1) {
          swap(b[i++ % n][1], b[j++ % n][1]);
        }
      } else {
        int i = 0, j = n - 1;
        while (i < j) {
          swap(b[i++ % n][1], b[j-- % n][1]);
        }
      }
    }
  } else if ((n == 3 && m >= 4) || (n >= 4 && m == 3)) {
    cout << "YES\n";
    my_shuffle();
    if (n == 3) {
      if (m & 1) {
        rotate(b[1].begin(), b[1].begin() + m - 1, b[1].end());
      } else {
        int i = 0, j = m - 1;
        while (i < j) {
          swap(b[1][i++ % m], b[1][j-- % m]);
        }
      }
    } else {
      if (n & 1) {
        int i = 0, j = n - 1;
        while (i < n - 1) {
          swap(b[i++ % n][1], b[j++ % n][1]);
        }
      } else {
        int i = 0, j = n - 1;
        while (i < j) {
          swap(b[i++ % n][1], b[j-- % n][1]);
        }
      }
    }
  } else if (n == 3 && m == 3) {
    cout << "YES\n"
         << "1 3 5\n"
         << "8 4 9\n"
         << "6 2 7";
    exit(0);
  } else if (n == 1 && m == 1) {
    cout << "YES\n1";
    exit(0);
  } else {
    cout << "NO";
    exit(0);
  }
  for (int i = 0; i < n; ++i) {
    for (int j = 0; j < m; ++j) {
      cout << b[i][j] << " ";
    }
    cout << "\n";
  }
  return 0;
}
