#include <stdio.h>
#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 4000000000000000001




int main(){
	
	int h,w;
	cin>>h>>w;
	
	deque<int> d;
	rep(i,h*w)d.push_back(i+1);
	
	
	
	vector a(h,vector<int>(w));
	for(int i=0;i<=h+w;i+=2){
		rep(j,i+1){
			int x = j,y = i-j;
			if(x<h&&y<w){
				a[x][y] = d.front();
				d.pop_front();
			}
		}
	}
	reverse(d.begin(),d.end());
	for(int i=1;i<=h+w;i+=2){
		rep(j,i+1){
			int x = j,y = i-j;
			if(x<h&&y<w){
				a[x][y] = d.front();
				d.pop_front();
			}
		}
	}
	cout<<"Yes"<<endl;
	rep(i,h){
		rep(j,w){
			if(j!=0)cout<<' ';
				cout<<a[i][j];
		}
		cout<<endl;
	}
		
	
	return 0;
}