//It's MyGO!!!
//All OK
#include <bits/stdc++.h>
#define ios ios::sync_with_stdio(0);cin.tie(nullptr);cout.tie(0);cout << fixed << setprecision(7)
#define fi first
#define se second
#define INF 0x3f3f3f3f
#define LNF (1ll << 60)
#define ll long long
#define ull unsighed long long
// #define int long long
#define mod 998244353
// #define mod 1000000007
using namespace std;

vector<int> ans;
int st;

void dfs(double a, double b){
    // cout << a << ' ' << b << ' ' << a - b << ' ' << 1e-4 << endl;
    if(fabs(a - b) <= 1e-4 || st){
        st = 1;
        return;
    }
    if(a > b && !st){
        ans.push_back(1);
        dfs(a / 2, b);
        if(st) return;
        ans.pop_back();
    }
    if(a < b && !st){
        ans.push_back(2);
        dfs((a - 1) / 2 + 1, b);
        if(st) return;
        ans.pop_back();
    }
}

void solve(){
    double a, b;
    cin >> a >> b;
    ll k = b * (1ll << 50);
    vector<int> ans;
    for(int i = 0; i < 50; i ++)
        if(((k >> i) & 1) == 0)
            ans.push_back(1);
        else ans.push_back(2);
    for(auto i : ans)
        cout << i;
}

signed main(){
    ios;

    // init();
    int _ = 1;
    // cin >> _;
    for(int __ = 1; __ <= _; __ ++){
        // cout << "Case #" << __ << ": ";

        solve();
    }
    return 0;
}