#include<iostream>
#include<map>
#include<vector>
#include <algorithm>
#include<math.h>
#include <iomanip>
#include<set>
#include <numeric>
#include<string>
using namespace std;

int main()
{
    int n;
    cin >> n;
    string s;
    if (n == 0) cout << 1 << endl;
    else if (n == 1) cout << "010" << endl;
    else {
        for (int i= 0; i < n; i++){
            s = '0' + s;    
        }
        s += "101";
        cout << s << endl;
    }
}