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]; for (int i = 1; i < n; i++) { for (int j = 1; j * i < n; j++) { counts[j * i]++; } } int min = Integer.MAX_VALUE; ArrayList ans = new ArrayList<>(); 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) { min = x; ans.clear(); 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(""); StringBuilder sb = new StringBuilder(); 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(); } }