def naito(N, loc):
    if N <= 0:
        return
    init_loc = loc
    moves = [[-2, -1], [-2, 1], [-1, -2], [-1, 2], [1, -2], [1, 2], [2, -1], [2, 1]]
    for move in moves:
        loc = [] + init_loc
        loc[0] = loc[0] + move[0]
        loc[1] = loc[1] + move[1]
        if loc == [0, 0]:
            return 'YES'
        next = naito(N - 1, loc)
        if next == 'YES':
            return 'YES'
    return 'NO'

def main():
    X, Y = map(int, input().split())
    loc = [X, Y]
    print(naito(3, loc))

if __name__ == '__main__':
    main()