from math import sqrt,floor
N = int(input())
l = [0 for _ in range(N+1)]
ans = []
num = 10**9
for i in range(1,N+1):
  for j in range(i,N,i):
    l[j] += 1

for i in range(max(0,N//2-(floor(sqrt(N)))), N//2+floor(sqrt(N))):
  num = min(num,abs((i-l[i])-(N-i-l[N-i])))

for i in range(N//2-(floor(sqrt(N))), N//2+floor(sqrt(N))):
  if num == abs((i-l[i])-(N-i-l[N-i])):
    ans.append((i,N-i))

for i,j in ans:
 print(i,j)