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

if abs(X) + abs(Y) > 9:
    
    print('NO')
    
elif abs(X) > 6 or abs(Y) > 6:
    
    print('NO')
    
elif abs(X) == 6 or abs(Y) == 6:
    
    if (X + Y) % 2:
        
        print('YES')
        
    else:
        
        print('NO')
        
elif abs(X) + abs(Y) == 8:
    
    print('NO')
    
elif abs(X) == abs(Y) == 2:
    
    print('NO')
    
elif (abs(X) == 5 and abs(Y) == 1) or (abs(X) == 1 and abs(Y) == 5):
    
    print('NO')
    
else:
    
    print('YES')