#include<bits/stdc++.h>
using namespace std;
using ll = long long;
const int maxn = 1e5 + 10;
const double eps = 1e-9;
void solve(void)
{
    double a,b;
    cin >> a >> b;
    if (a==1 && b==1) {
        cout << 2 << endl;
        return;
    }
    string A = "";
    string B = "";
    double _a = a;
    double _b = b;
    if (_a - 1.0 >= -eps) {
        A+="1";
        _a -= 1.0;
    }
    else {
        A+="0";
    }
    if (_b - 1.0 >= -eps) {
        B+="1";
        _b -= 1.0;
    }
    else {
        B+="0";
    }
    for(int i = 1;i<=15;++i) {
        _a = _a * 2;
        if (_a - 1.0 >= -eps) {
            A+="1";
            _a -= 1.0;
        }
        else {
            A+="0";
        }
        _b = _b * 2;
        if (_b - 1.0 >= -eps) {
            B+="1";
            _b -= 1.0;
        }
        else {
            B+="0";
        }
        // cout << _a <<" "<<_b<<endl;
        cout << "1";
    }
    for (int i = 15;i>=1;--i) {
        if (B[i]=='1') {
            cout << 2;
        }
        else {
            cout << 1;
        }
    }
    cout << endl;
    // cout << A << endl << B << endl;
}
int main(void)
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int t=1;
    while(t--)
    {
        solve();
    }
    return 0;
}
/*

0.75


 */