#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using VI = vector<int>;
using PII = pair<ll,ll>;
using VVI = vector<vector<int>>;
const ll mod = 998244353;
const ll INF = 1e18;
const int N = 2e5 + 10;


double a,b;
string res;
int main() {
	ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    //int T;cin>>T;while(T--)solve();
	cin>>a>>b;
	VI a;
	//a.push_back(0);
	
	//0.xxxx
	double p = 0.5;
	while(b > 1e-5){
		if(b >= p){
			b -= p;
			a.push_back(1);
		}else{
			a.push_back(0);
		}
		//cout<<b<<" ";
		p *= 0.5;
	}
	//0.a
	//for(auto x : a)cout<<x;
	//1cout<<endl;
	for(int i = 1 ; i <= 20 ; i++) res.push_back('1');
	reverse(a.begin(),a.end());
	for(auto x : a){
		if(x == 1){
			res += '2';
		}else{
			res += '1';
		}
	}
	//11111111111111111111211212
	
	cout<<res;
	
	
	
	
	
	
	
	
	
}


//5 4 3 2 1
//5 4 3 2 1