h, w = map(int, input().split())

A = [[0] * w for _ in range(h)]
for i in range(h):
    for j in range(w):
        if j & 1:
            ii = h - 1 - i
        else:
            ii = i
        if i & 1:
            jj = w - 1 - j
        else:
            jj = j

        x = ii * w + jj + 1
        A[i][j] = x
        x += 1

print("YES")
for row in A:
    print(*row)

se = set()
for i in range(h - 1):
    for j in range(w - 1):
        se.add(A[i][j] + A[i + 1][j] + A[i][j + 1] + A[i + 1][j + 1])
assert len(se) == 1