G = tuple(map(int, input().split()))

if G == (0, 0):
    print('YES')
    exit()

st = {(0, 0)}
for _ in range(3):
    new_st = set()
    for x, y in st:
        for dx, dy in ((1, 2), (2, 1), (1, -2), (-2, 1),
                       (-1, 2), (2, -1), (-1, -2), (-2, -1)):
            new_st.add((x + dx, y + dy))
    st = new_st
    if G in st:
        print('YES')
        break
else:
    print('NO')