import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        int[] counts = new int[n + 1];
        for (int i = 1; i <= n; i++) {
            for (int j = 1; j * i <= n; j++) {
                counts[j * i]++;
            }
        }
        ArrayList<Integer> ans = new ArrayList<>();
        int min = Integer.MAX_VALUE;
        for (int i = 1; i < n; i++) {
            int x = Math.abs(i - counts[i] - (n - i - counts[n - i]));
            if (min == x) {
                ans.add(i);
            } else if (min > x) {
                ans.clear();
                min = x;
                ans.add(i);
            }
        }
        StringBuilder sb = new StringBuilder();
        for (int x : ans) {
            sb.append(x).append(" ").append(n - x).append("\n");
        }
        System.out.print(sb);
    }
}

class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String next() throws Exception {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
}