import java.io.*;
import java.util.*;
import java.util.function.*;
import java.util.stream.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        int[] counts = new int[n];
        for (int i = 1; i < n; i++) {
            counts[i] += i;
            for (int j = 1; j * i < n; j++) {
                counts[j * i]--;
            }
        }
        TreeMap<Integer, ArrayList<Integer>> groups = new TreeMap<>();
        for (int i = 1; i < n; i++) {
            int value = Math.abs(counts[i] - counts[n - i]);
            if (!groups.containsKey(value)) {
                groups.put(value, new ArrayList<>());
            }
            groups.get(value).add(i);
        }
        String result = groups.firstEntry().getValue().stream().map(x -> {
            return new StringBuilder().append(x).append(" ").append(n - x);
        }).collect(Collectors.joining("\n"));
        System.out.println(result);
    }
}
class Scanner {
    BufferedReader br;
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() {
        try {
            br = new BufferedReader(new InputStreamReader(System.in));
        } catch (Exception e) {
            
        }
    }
    
    public int nextInt() {
        return Integer.parseInt(next());
    }
    
    public long nextLong() {
        return Long.parseLong(next());
    }
    
    public double nextDouble() {
        return Double.parseDouble(next());
    }
    
    public String next() {
        try {
            while (!st.hasMoreTokens()) {
                st = new StringTokenizer(br.readLine());
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            return st.nextToken();
        }
    }
    
}