#include<bits/stdc++.h>
using namespace std;
double p[18];
int f[20];
int main()
{
    p[1] = 0.5;
    for (int i = 2; i <= 15; i ++) p[i] = p[i - 1] * 0.5;
    vector<int> v;
    double a, b;
    cin >> a >> b;
    double y = b;
    for (int i = 1; i <= 15; i ++)
    {
        if (y <= 1e-4) break;
        if (y > p[i]) v.push_back(i), y -= p[i], f[i] = 1;
    }
    for (int i = 1; i <= 15; i ++) cout << "1";
    int id = v.back();
    for (int i = id; i >= 1; i --)
    {
        if (f[i]) cout << "2";
        else cout << "1";
    }
    return 0;
}