n = int(input())
nl = [2**i for i in range(int(n**0.5)+1)]

l = []
for i in range(1, n):
    x = i
    y = n - i
    if not x in nl and not y in nl:
        l.append(x)

l = sorted(l)

if len(l) == 0:
    print(-1)
else:
    print(l[0], n - l[0])