def can_reach_zero(A, B):
    while True:
        if A == 0 and B == 0:
            return True
        # Check if both are odd and greater than zero
        if (A % 2 == 1) and (B % 2 == 1) and (A != 0 or B != 0):
            return False
        # Check possible operations
        op1_possible = False
        new_a1 = 0
        new_b1 = 0
        if A % 2 == 0 and B >= 1:
            op1_possible = True
            new_a1 = A // 2
            new_b1 = B - 1
        op2_possible = False
        new_a2 = 0
        new_b2 = 0
        if B % 2 == 0 and A >= 1:
            op2_possible = True
            new_a2 = A - 1
            new_b2 = B // 2
        if not op1_possible and not op2_possible:
            return False
        if op1_possible and op2_possible:
            sum1 = new_a1 + new_b1
            sum2 = new_a2 + new_b2
            if sum1 <= sum2:
                A, B = new_a1, new_b1
            else:
                A, B = new_a2, new_b2
        elif op1_possible:
            A, B = new_a1, new_b1
        else:
            A, B = new_a2, new_b2

A, B = map(int, input().split())
if can_reach_zero(A, B):
    print("Yes")
else:
    print("No")