H,W = map(int,input().split())
A = [[0] * W for _ in range(H)]
HW = H * W
D = (HW % 2) ^ 1
R = []
for i in range(HW):
        w = i % W
        h = i // W
        if (h - w) % 2 == 0:
            A[h][w] = i + 1
        else:
            R.append(i+1)
R.sort(reverse = True)
i = 0
for h in range(H):
    for w in range(W):
        if A[h][w] == 0:
            A[h][w] = R[i]
            i += 1
print("Yes")
for i in range(H):
    print(*A[i])