import sys
input = sys.stdin.readline
from collections import *

H, W = map(int, input().split())
A = [[-1]*W for _ in range(H)]

for i in range(H):
    for j in range(W):
        A[i][j] = W*i+j+1

for i in range(1, H, 2):
    A[i].reverse()

for i in range(1, W, 2):
    for j in range(H//2):
        A[j][i], A[H-1-j][i] = A[H-1-j][i], A[j][i]

print('Yes')

for i in range(H):
    print(*A[i])
    
# for i in range(H-1):
#     for j in range(W-1):
#         assert(A[i][j]+A[i+1][j]+A[i][j+1]+A[i+1][j+1]==A[0][0]+A[0][1]+A[1][0]+A[1][1])