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

#define ll long long
#define rep(i, n) for (int i = 0; i < (n); i++)
#define P pair<int, int>

int main() {
  int N;
  cin >> N;


  if (N == 0) {
    cout << "0" << endl;
    return 0;
  }

  string ans = "010";

  rep(i, N-1) {
    ans += "0";
  }

  cout << ans << endl;

}