#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl "\n"
#define PII pair<double,int>
double f1(double a,double s){
    return a*s;
}
double f2(double a,double s){
    return (a-1)*s+1;
}
const double eps=1e-8;
signed main(){
    double a,b;
    cin>>a>>b;
    double s=0.5;
    int cnt=0;
    while(abs(a-b)>eps){
        cnt++;
        double X=abs(f1(a,s)-b);
        double Y=abs(f2(a,s)-b);
        if(X>Y){
            printf("2");
            a=f2(a,s);
        }
        else{
            printf("1");
            a=f1(a,s);
        }
        if(cnt>=45)break;
    }

    
    
}