#include<bits/stdc++.h>
using namespace std;
#define ll long long

void solve() {
	
	double a , b;
	cin >> a >> b;
	
	while(fabs(a - b) >= 1e-4){
		if(a < b){
			a = a * 0.5 + 0.5;
			cout << 2;
		}
		else {
			a = a * 0.5;
			cout << 1;
		}
	}
    
}

int main(){
	ios::sync_with_stdio(false);
    cin.tie(0);
   	
    int __ = 1;
    //cin >> __;
    
	while(__--){
   		solve();
   	}
    return 0;
}