#include <bits/stdc++.h>

using namespace std;

using ll = long long;

constexpr char newl = '\n';

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    int n;
    cin >> n;

    if (n == 0) {
        cout << "0\n";
    } else {
        string ans = "010" + string(n - 1, '0');
        cout << ans << newl;
    }

    return 0;
}