x = int(input())

C = [i for i in range(x + 1)]
for i in range(1, x + 1):
    for j in range(i, x + 1, i):
        C[j] -= 1

D = [[] for _ in range(x)]
for i in range(1, x):
    num = abs(C[i] - C[x - i])
    D[num].append((i, x - i))
for i in range(x):
    if len(D[i]) > 0:
        for a, b in D[i]:
            print(a, b)
        break