N = int(input())
f = [2 ** i for i in range(1000)]
flag = False
for i in range(1, N // 2 + 1):
    if i not in f and (N - i) not in f:
        a, b = i, N - i
        flag = True
        break

if flag:
    print("{} {}".format(a, b))
else:
    print(-1)