#include <bits/stdc++.h>
using namespace std;
int main() {
    int N;
    cin >> N;
    if(N == 0) {
        cout << 1 << endl;
    }
    else {
        cout << "010";
        for(int i = 0; i < N-1; i++) {
            cout << "0";
        }
        cout << endl;
    }
}