#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int N=11000;
const double eps=1e-5;
#define endl '\n'
int check(double x){
    if(fabs(x)<eps)return 0;
    if(x>0)return 1;
    return -1;
}

int main(){
    #ifdef LOCAL
    freopen("input.in","r",stdin);
    freopen("output.out","w",stdout);
    #endif
    ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
    double a,b;
    cin>>a>>b;
    if(check(1-b)==0){
        for(int i=1;i<=15;i++){
            cout<<2;
        }
        return 0;
    }
    if(check(b)==0){
        for(int i=1;i<=15;i++){
            cout<<1;
        }
        return 0;
    }
    int st=20;
    while(st--)a/=2.0,cout<<2;//,printf("%.10lf\n",a)
    int k=20;
    vector<int>stt;
    for(int i=1;i<=k;i++){
        b*=2.0;
        // printf("%.10lf\n",b);
        if(b>=1.0){
            b-=1.0;
            stt.push_back(1);
        }
        else stt.push_back(0);
        // printf("%.10lf\n",b);
    }
    while(stt.size()){
        int f=stt.back();
        stt.pop_back();
        if(f){
            a=a/2.0+0.5;
            cout<<2;
        }
        else cout<<1,a=a/2.0;
        
        // printf("%.10lf\n",a);
    }
    cout<<endl;
    return 0;
}