#include <bits/stdc++.h>
using namespace std;

int main()
{
  int n;
  cin >> n;
  string s(2000, '0');
  s[1] = '1';
  for (int j = 0; j < 1998 - n; j++)
  {
    for (int i = 0;; i++)
    {
      if (s.substr(i, 3) == "010")
      {
        s[i] = s[i + 2] = '1', s[i + 1] = '0';
        break;
      }
    }
  }
  cout << s << "\n";
}