#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
using ll = long long;
using P = pair<int,int>;

int main() {
  int N, A = -1, B = -1, C = -1;
  cin >> N;
  rep(i,N) rep(j,N) rep(k,N) {
    {
      {
        if(i|j == N && j|k == N && k|i == N && i ^ j ^ k == 0) {
          A = i;
          B = j;
          C = k;
        }
      }
    }
  }
  cout << A << B << C << endl;
  return 0;
}