// 入力フォーマットチェックその２
#include<bits/stdc++.h>
using namespace std;
using ll = int;
#define UNTIE ios_base::sync_with_stdio( false ); cin.tie( nullptr ) 
#define GETLINE( A ) string A; getline( cin , A ) 
#define QUIT return 0 

// 入力フォーマットチェック用
// #define CHECK_REDUNDANT_INPUT string VARIABLE_FOR_CHECK_REDUNDANT_INPUT = ""; cin >> VARIABLE_FOR_CHECK_REDUNDANT_INPUT; assert( VARIABLE_FOR_CHECK_REDUNDANT_INPUT == "" ); assert( ! cin );
#define CHECK_REDUNDANT_INPUT string VARIABLE_FOR_CHECK_REDUNDANT_INPUT = ""; getline( cin , VARIABLE_FOR_CHECK_REDUNDANT_INPUT ); assert( VARIABLE_FOR_CHECK_REDUNDANT_INPUT == "" ); assert( ! cin );
#define STOI( S , N , BOUND ) ll N = 0; { bool VARIABLE_FOR_POSITIVITY_FOR_STOI = true;  assert( S != "" ); if( S.substr( 0 , 1 ) == "-" ){ VARIABLE_FOR_POSITIVITY_FOR_STOI = false; S = S.substr( 1 ); assert( S != "" ); } assert( S.substr( 0 , 1 ) != " " ); while( S == "" ? false : S.substr( 0 , 1 ) != " " ){ assert( N < BOUND / 10 ? true : N == BOUND / 10 && stoi( S.substr( 0 , 1 ) ) < BOUND % 10 ); N = N * 10 + stoi( S.substr( 0 , 1 ) ); S = S.substr( 1 ); } if( ! VARIABLE_FOR_POSITIVITY_FOR_STOI ){ N *= -1; } } 

int main()
{
  UNTIE;
  constexpr const int bound = 1001;
  GETLINE( S );
  STOI( S , H , bound );
  STOI( S , W , bound );
  CHECK_REDUNDANT_INPUT;
  int minmax[2] = { 1 , H * W };
  constexpr const int incrdecr[2] = { 1 , -1 };
  int A[bound][bound];
  int h = 0;
  int w = 0;
  int index;
  bool transpose = W % 2 == 0 && H % 2 == 1; 
  if( transpose ){
    swap( H , W );
  }
  while( h + 1 < H ){
    w = 0;
    index = 0;
    int ( &Ah )[bound] = A[h];
    int ( &Ah_plus )[bound] = A[h+1];
    while( w < W ){
      Ah[w] = minmax[index];
      minmax[index] += incrdecr[index];
      index = 1 - index;
      Ah_plus[w] = minmax[index];
      minmax[index] += incrdecr[index];
      w++;
    }
    h += 2;
  }
  if( h + 1 == H ){
    w = 0;
    index = 0;
    int ( &Ah )[bound] = A[h];
    int W_minus = W - 1;
    int W_half = ( W + 1 ) / 2;
    while( w < W_half ){
      Ah[w] = minmax[index];
      minmax[index] += incrdecr[index];
      index = 1 - index;
      Ah[W_minus - w] = minmax[index];
      minmax[index] += incrdecr[index];
      w++;
    }
  }
  cout << "Yes\n";
  h = 0;
  w = 0;
  if( transpose ){
    swap( H , W );
    while( h < H ){
      cout << A[0][h];
      w = 1;
      while( w < W ){
	cout << " " << A[w][h];
	w++;
      }
      cout << "\n";
      h++;
    }
  } else {
    while( h < H ){
      int ( &Ah )[bound] = A[h];
      cout << Ah[0];
      w = 1;
      while( w < W ){
	cout << " " << Ah[w];
	w++;
      }
      cout << "\n";
      h++;
    }
  }
  QUIT;
}