#include <bits/stdc++.h>
using namespace std;

int main()
{
    double a, b;
    cin >> a >> b;

    string s;
    if (b == 1.0)
        b = 0.9999999999999999999999;

    for (int i = 1; i <= 50; i++)
    {
        b *= 2;
        if (b >= 1)
        {
            s += '1';
            b -= 1;
        }
        else
            s += '0';
    }

    for (int i = 0; i < 50; i++)
    {
        if (s[i] == '1')
            cout << 2;
        else
            cout << 1;
    }
    return 0;
}