#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int N=11000;
const double eps=1e-5;

int check(double x){
    if(abs(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;
    while(1){
        int f=check(a-b);
        // cerr<<a<<" "<<b<<endl;
        if(f==0){
            break;
        }
        if(f==1){
            a/=2.0;
            cout<<1;
        }
        if(f==-1){
            a=(a+1.0)/2;
            cout<<2;
        }
    }
    cout<<endl;
    return 0;
}