#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using P = pair<ll,ll>;
#define fix(x) fixed << setprecision(x)
#define asc(x) x, vector<x>, greater<x>
#define rep(i, n) for(ll i = 0; i < n; i++)
#define all(x) (x).begin(),(x).end()
template<class T>bool chmin(T&a, const T&b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool chmax(T&a, const T&b){if(a<b){a=b;return 1;}return 0;}

int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    int h,w;
    cin >> h >> w;
    cout << "Yes\n";
    vector<vector<int>> a(h,vector<int>(w));
    rep(i,h){
        rep(j,w) a[i][j] = i*h+j+1;
        if(i&1) reverse(all(a[i]));
    }
    rep(i,w){
        if(i&1) continue;
        rep(j,h/2) swap(a[j][i], a[h-j-1][i]);
    }
    rep(i,h){
        rep(j,w) cout << a[i][j] << " ";
        cout << '\n';
    }
    return 0;
}