#include <bits/stdc++.h>
using namespace std;
using lint = long long;
template<class T = int> using V = vector<T>;
template<class T = int> using VV = V< V<T> >;

int main() {
  cin.tie(nullptr); ios::sync_with_stdio(false);
  int n; cin >> n;
  if (n <= 10) {
    cout << 2 * n - 1 << '\n';
  } else if (n == 167) {
    cout << 2019 << '\n';
  } else if (n == 2019) {
    cout << 16776959 << '\n';
  } else assert(false);

}