#include <bits/stdc++.h>
 
std::ifstream in("multiplu.in");
std::ofstream out("multiplu.out");
 
constexpr int N = 2e6;
 
int prev_mod[N];
int digit_count[N];
int digit[N];
int ans[N];
 
int gcd(int a, int b) {
	return b == 0 ? a : gcd(b, a % b);
}
 
void bfs(int mod) {
   	static int q[N];
	int q_top, q_bot;
	q_top = q_bot = 0;
 
	q[q_top++] = 1;
	prev_mod[1] = -1;
	digit[1] = 1;
	digit_count[1] = 1;
 
	bool found_0 = false;
	while (q_top != q_bot && !found_0) {
		int m = q[q_bot++];
		for (int d = 0; d < 2; ++d) {
			int new_m = (m * 10 + d) % mod;
			if (digit_count[new_m] != 0) {
				continue;
			}
 
			q[q_top++] = new_m;
			prev_mod[new_m] = m;
			digit[new_m] = d;
			digit_count[new_m] = digit_count[m] + 1;
 
			found_0 = new_m == 0;
		};
	}
}
 
int main() {
	int a, b;
	in >> a >> b;
 
	int lcm = a / gcd(a, b) * b;
	bfs(lcm);
 
	int i = digit_count[0];
	for (int m = 0; m != -1; m = prev_mod[m]) {
		ans[--i] = digit[m];
	}
	for (int i = 0; i < digit_count[0]; ++i) {
		out << ans[i];
	}
	out << "\n";
}