#include <bits/stdc++.h>
using namespace std;
int main(){
  int H, W;
  cin >> H >> W;
  vector<vector<int>> A(H, vector<int>(W));
  int X = 0;
  for (int i = 0; i < H; i++){
    for (int j = 0; j < W; j++){
      if ((i + j) % 2 == 0){
        A[i][j] = X;
        X++;
      }
    }
  }
  for (int i = H - 1; i >= 0; i--){
    for (int j = W - 1; j >= 0; j--){
      if ((i + j) % 2 == 1){
        A[i][j] = X;
        X++;
      }
    }
  }
  cout << "Yes" << endl;
  for (int i = 0; i < H; i++){
    for (int j = 0; j < W; j++){
      cout << A[i][j] + 1;
      if (j < W - 1){
        cout << ' ';
      }
    }
    cout << endl;
  }
}