#include<bits/stdc++.h>
using namespace std;
const int N=1e4+10;
const int M=1e4;
string dp[N];
int a,b;
void bfs(int x)
{
    vector<bool> vis(N);
    queue<pair<int,string>> q;
    q.push({x,""});
    while(q.size())
    {
        // cout<<x<<'\n';
        auto [x,s]=q.front();q.pop();
        if(vis[x]) continue;
        vis[x]=1;
        if(x==b)
        {
            cout<<s;
            return;
        }
        if(!vis[x/2]) q.push({x/2,s+'1'});
        if(!vis[(x+M)/2]) q.push({(x+M)/2,s+'2'});
    }
}
int main()
{
    double x,y;
    cin>>x>>y;
    a=(int)(x*M),b=(int)(y*M);
    // cout<<a<<' '<<b;
    bfs(a);
    return 0;
}