using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static long NN => long.Parse(ReadLine());
    static long[] NList => ReadLine().Split().Select(long.Parse).ToArray();
    static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var c = NList;
        var (h, w) = (c[0], c[1]);
        var res = new int[h][];
        for (var i = 0; i < res.Length; ++i) res[i] = new int[w];
        var num = 0;
        for (var i = 0; i < h; ++i) for (var j = 0; j < w; ++j)
        {
            if ((i + j) % 2 == 0) res[i][j] = ++num;
        }
        for (var i = h - 1; i >= 0; --i) for (var j = w - 1; j >= 0; --j)
        {
            if ((i + j) % 2 == 1) res[i][j] = ++num;
        }
        WriteLine("Yes");
        WriteLine(string.Join("\n", res.Select(r => string.Join(" ", r))));
    }
}