n = int(input())
i = 0
S = []
flag = False
while 2**i <= n:
    if 2**i == n:
        flag = True
    S.append(2**i)
    i += 1

T = set(S)
for a in S:
    b = n-a
    T.add(b)

if 0 in T:
    T.remove(0)
#print(T)

if not flag:
    if len(T) == n-1:
        print(-1)
        exit()
else:
    if len(T) == n:
        print(-1)
        exit()


for i in range(1, n+1):
    if i not in T:
        print(i, n-i)
        exit()