110

n = int(input())
if n < 3 or n == 5:
    print('IMPOSIBLE')
elif n % 3 == 0:
    print(int(n/3))
    print(0)
elif n % 4 == 0:
    print(0)
    print(int(n/4))
else:
    x = int(n/3)
    y = 0
    while x > 0:
        if x*3+y*4 < n:
            y = y + 1
        elif x*3+y*4 > n:
            x = x - 1
        else:
            print(x)
            print(y)
            break;