#include <iostream>
#include <vector>
#include <string> 
#include <set>
using namespace std;

int main(){
  int N;
  cin >> N;
  for(int i = 1;i <= 10;i++){
    int j = N - i;
    if(1 <= j && j <= 10){
      cout << i << " " << j << endl;
    }
  }
}