/**
 *   @FileName	a.cpp
 *   @Author	kanpurin
 *   @Created	2020.10.24 02:43:29
**/

#include "bits/stdc++.h" 
using namespace std; 
typedef long long ll;

int main() {
    int n;cin >> n;
    if (n == 0) {
        cout << "1" << endl;
        return 0;
    }
    string s = "010";
    for (int i = 0; i < n-1; i++) {
        s += "0";
    }
    cout << s << endl;
    return 0;
}