#include <bits/stdc++.h>

using i64 = long long;
using A2 = std::array<i64, 2>;

#define Fast_IOS \
	std::ios::sync_with_stdio(false), \
	std::cin.tie(0), \
	std::cout.tie(0)

const i64 mod = 998244353;

class ICPC {
public:
	int N, T = 1;

	ICPC() {
		// Fast_IOS;
		// std::cin >> T;
	}

	void solve() {
		int n;
		std::cin >> n;
		int t = 0, tt = 0;
		while (n) {
			t++;
			tt = std::min(n, t);
			n -= tt;
			while (tt--) std::cout << 1;
			tt = std::min(n, t);
			n -= tt;
			while (tt--) std::cout << 0;
		}
		std::cout << '\n';
	}
};

int main() {
	ICPC icpc;
	while (icpc.T--) {
		icpc.solve();
	}
	return 0;
}