#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;
using ll = long long;

int main(){
	string s , t;
	cin >> s >> t;
	for(char &i : t){
		if(isdigit(i)){
			i = s[i - '0'];
		}
	}
	cout << t << '\n';
	return 0;
}