#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;
	
	
	vector a(h,vector<int> (w));
	int cur = 0;
	rep(i,h){
		rep(j,w){
			if((i+j)%2==0){
				a[i][j] = cur;
				cur++;
			}
		}
	}
	for(int i=h-1;i>=0;i--){
		for(int j=w-1;j>=0;j--){
			if((i+j)%2==1){
				a[i][j] = cur;
				cur++;
			}
		}
	}
	cout<<"Yes"<<endl;
	rep(i,h){
		rep(j,w){
			if(j!=0)cout<<' ';
			cout<<a[i][j]+1;
		}
		cout<<endl;
	}
	set<int> s;
	rep(i,h){
		rep(j,w){
			s.insert(a[i][j]);
		}
	}
	
	//cout<<s.size()<<endl;
	
	return 0;
}