#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using Graph = vector<vector<int>>;
int main() {
  int N; cin >> N;
  string s = "";
  for(int i = 0; i < 1009; i++) {
    s += '1';
  }
  s += '0';
  cout << s << endl;
}