#include <bits/stdc++.h>

using i64 = long long;

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

	double a, b;
	std::cin >> a >> b;

	if (a == b) {
		return 0;
	}

	for (int i = 0; i < 25; i++) {
		std::cout << 1;
	}

	std::vector<int> B;
	double base = 0.5;
	while (B.size() < 25) {
		if (b >= base) {
			B.emplace_back(1);
			b -= base;
		} else {
			B.emplace_back(0);
		}
		base /= 2;
	}

	for (int i = B.size() - 1; i >= 0; i--) {
		if (B[i]) {
			std::cout << 2;
		} else {
			std::cout << 1;
		}
	}
	std::cout << "\n";

	return 0;
}