鸡兔同笼2

a,b = map(int,input().split(' '))
if(a > 0 and b >0 and b % 2 == 0 and b-2*a>0):
    for x in range(1,a+1):
        y=a-x
        if 2*x+4*y==b:
            print("{} {}". format(x,y))
else:
    print("Data Error!")