def solve():
    H,W=map(int,input().split())

    print("Yes")

    Odd =list(range(1,H*W+1,2))
    Even=list(range(2,H*W+1,2))[::-1]

    X=[Odd[i//2] if i%2==0 else Even[i//2] for i in range(H*W)]
    for i in range(H):
        print(*X[i*W:(i+1)*W])

#==================================================
solve()