x = int(input())
Z = x

D = [0 for _ in range(Z+1)]
for i in range(1, Z+1):
    for j in range(i, Z+1, i):
        D[j] += 1

li = [[] for i in range(x+1)]

for i in range(1,x):
    fa = i-D[i]
    fb = (x-i)-D[x-i]
    li[abs(fa-fb)].append([i,x-i])

for i in range(x+1):
    if len(li[i]) > 0:
        for j in range(len(li[i])):
            print(*li[i][j])
        exit()