//Normal-2

#define _GLIBCXX_DEBUG
#define ll long long
#include <bits/stdc++.h>
using namespace std;
using Graph = vector<vector<int>>;

void p(auto a){
  cout << a;
}

void ps(auto a){
  cout << a << " ";
}

void ps(){
  cout << " ";
}

void pl(auto a){
  cout << a << endl;
}

void pl(){
  cout << endl;
}

void fix5(){
  cout << fixed << setprecision(5);
}

void fix10(){
  cout << fixed << setprecision(10);
}

void Yes(){
  pl("Yes");
}

void No(){
  pl("No");
}

void yes(){
  pl("yes");
}

void no(){
  pl("no");
}

//Normal-2
int main(){
  int X; cin >> X;

  vector<int> dp = {0, 9999, 2, 5, 4, 15, 14, 25, 24, 35, 34, 45, 44};

  pl(dp[X]);
}