#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 && a == 1.) {
		std::cout << 1;
		a /= 2;
	}
	if (a == b) {
		return 0;
	}

	std::vector<int> A, B;
	double base = 0.5;
	while (A.size() < 40) {
		if (a >= base) {
			A.emplace_back(1);
			a -= base;
		} else {
			A.emplace_back(0);
		}
		base /= 2;
	}
	base = 0.5;
	while (B.size() < 40) {
		if (b >= base) {
			B.emplace_back(1);
			b -= base;
		} else {
			B.emplace_back(0);
		}
		base /= 2;
	}

	// std::cerr << "Yes\n";

	for (int i = 0, j = 40; i < 40 && j > 0; i++, j--) {
		int l = i, r = 0;
		while (l < 40 && r < j && A[r] == B[l]) {
			l++, r++;
		}
		// std::cerr << "Yes\n";
		if (l == 40 && r == j) {
			// std::cerr << i << " " << j << "\n";
			for (int _ = i - 1; _ >= 0; _--) {
				if (B[_]) {
					std::cout << 2;
				} else {
					std::cout << 1;
				}
			}
			std::cout << "\n";
			return 0;
		}
	}

	for (int i = 0; i < 40; i++) {
		std::cout << 1;
	}
	std::cout << "\n";

	return 0;
}