#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl "\n"
const int N = 1e6, M = 110, mod = 1e9 + 7, inf = 2e9;
const long long D = 1e12;
typedef pair<int, int> pt;
typedef long long ll;
int ans[30];
void solve() {
    double a, b;
    cin >> a >> b;
    auto dfs = [&](auto self, int u) -> void {
        if (u > 25) return;
        if (abs(b - a) <= 1e-4) {
            for (int i = 0; i < u; i++) cout << ans[i];
            exit(0);
        }
        double p = a;
        a = 0.5 * a;
        ans[u] = 1;
        self(self, u + 1);
        ans[u] = 0;
        a = p;
        a = 0.5 * a + 0.5;
        ans[u] = 2;
        self(self, u + 1);
        a = p;
        ans[u] = 0;
    };
    dfs(dfs, 0);
}
signed main() {
    //freopen("title.in", "r", stdin);
    //freopen("std.txt", "w", stdout);
	ios::sync_with_stdio(false);
	cin.tie(0), cout.tie(0);
	int t = 1;
	//cin >> t;
	while (t--) {
		solve();
	}
	return 0;
}