mod = 1000000007
eps = 10**-9


def main():
    import sys
    input = sys.stdin.readline

    N = int(input())
    A = set()
    for i in range(31):
        A.add(1<<i)

    for a in range(1, N):
        b = N - a
        if a not in A and b not in A:
            print(a, b)
            exit()
    print(-1)


if __name__ == '__main__':
    main()