#include <bits/stdc++.h>
using namespace std;

int main()
{
	int N;
	cin >> N;

	string ans;
	if( N == 0 ) ans = "1";
	else {
		ans = "010";
		for( int i = 0; i < N - 1; i++ ) ans += '0';
	}

	cout << ans << endl;
}