#include <bits/stdc++.h>
using namespace std;

int D[2000001];
int N;

int f(int k) {
    return k - D[k];
}

int main() {
    cin >> N;
    for (int i = 1; i <= N; ++i) {
        for (int k = i; k <= N; k += i) {
            ++D[k];
        }
    }
    
    map<int, vector<int>> mp;
    for (int i = 1; i < N; ++i) {
        int a = i;
        int b = N - i;
        int diff = abs(f(a) - f(b));
        mp[diff].push_back(a);
    }
    
    for (int a : mp.begin()->second) {
        cout << a << ' ' << N - a << endl;
    }
}