from itertools import product

X, Y = map(int, input().split())

d = [[-2,-1],[-2,1],[-1,-2],[-1,2],[1,-2],[1,2],[2,-1],[2,1]]
yes = False
for steps in product(d, repeat=3):
    x = y = 0
    for s in steps:
        x += s[0]
        y += s[1]
        if x==X and y==Y:
            yes = True
            break
print('YES' if yes else 'NO')