#include <bits/stdc++.h>
using namespace std;
#define int long long
const int N = 1e6 + 10;

int cc[N] = {};
int flag = 1;
void dfs(double a, double b, int cnt)
{
	if (cnt > 50 || !flag)
		return;
	if (fabs(a - b) < 1e-4 && flag)
	{
		for (int i = 1; i <= cnt - 1; i++)
		{
			cout << cc[i];
		}
		flag = 0;
		return;
	}
	else
	{
		cc[cnt] = 1;
		dfs(a * 0.5, b, cnt + 1);
		cc[cnt] = 0;

		cc[cnt] = 2;
		dfs(a * 0.5 + 0.5, b, cnt + 1);
		cc[cnt] = 0;
	}
}

signed main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int t;
	// cin >> t;
	t = 1;
	while (t--)
	{
		double a, b;
		cin >> a >> b;
		dfs(a, b, 1);
	}
}