#include <bits/stdc++.h>
using namespace std;
#define modulo 1000000007
#define mod(mod_x) ((((long long)mod_x)+modulo)%modulo)
#define Inf 1000000000000


int main(){
	
	string A,B;
	cin>>A>>B;
	
	int a = stoi(A,0,2);
	int b = stoi(B,0,2);
	
	a+=b;
	
	cout<<a<<endl;
	/*
	if(a<0){
		cout<<'-';
		a*=-1;
	}

	string ans = "";
	
	while(a!=0){
		ans += '0'+(a%2);
		a/=2;
	}
	
	if(ans=="")ans = "0";
	reverse(ans.begin(),ans.end());
	cout<<ans<<endl;
	*/
	
    return 0;
}