#include<bits/stdc++.h>
using namespace std;
#define int long long
const int N = 1e6 + 10;
const int mod = 998244353;
int n, m, k;
string s1, s2;
int h[N], idx, ne[N];
vector<int> pa;
double a, b;

void solve() {
	cin >> a >> b;
	int cmod = (1ull << 50);
//	cout<<(1ull<<50)<<endl;
//	a=a*cmod;
//	cout << fixed << setprecision(6) << b*cmod << endl;
	int p = b * cmod;
	vector<int> ve;
	for (int i = 0; i < 50; i++) {
		if (((p >> i) & 1) == 0) {
			ve.push_back(1);
		//	a/=2.0;
		//	cout<<fixed<<setprecision(6)<<a<<endl;
		} else {
			ve.push_back(2);
		//	a=(a+1)/2.0;
		//	cout<<fixed<<setprecision(6)<<a<<endl;
		}
	}

	for (auto i : ve) cout << i;

}


signed main() {
	int t = 1;
	//cin >> t;
	while (t--) {
		solve();
	}
}