import sys
input=lambda: sys.stdin.readline().rstrip()
n=int(input())
S=set()
S.add(1)
cur=1
for i in range(60):
  cur*=2
  S.add(cur)
for i in range(1,n):
  if i not in S and n-i not in S:
    print(i,n-i)
    break
else:
  print(-1)