#include <bits/stdc++.h>
using namespace std;
#define int long long
#define N 200005
#define double long double
#define endl '\n'
double a, b, x;
int ans[N] = {0};
signed main()
{
    cin >> a >> b;
    /*
    操作一:a=a*0.5;等价于b=b*2;
    操作二:a=a/2+0.5;等价于b=b-0.5
     */
    for (int i = 1; i <= 12; i++)
    {
        cout << 1;
        a *= 0.5;
    } // a置'零'
    for (int i = 1; i <= 38; i++)
    {
        if (b - 0.5 > 1e-4)
        {
            b -= 0.5;
            b = b * 2;
            ans[i] = 2;
        }
        else
        {
            b *= 2;
            ans[i] = 1;
        }
    }
    x = a;
    for (int i = 38; i >= 1; i--)
    {
        if (ans[i] == 1)
            x = x * 0.5;
        else
            x = x / 2 + 0.5;
        cout << ans[i];
    }
    // cout << endl
    //  << x;
    return 0;
}