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

using namespace std;
using ll = long long;

int main(){
	string s , t;
	cin >> s >> t;
	for(int i = 0; i < t.size(); i++){
		if('0' <= t[i] && t[i] <= '9'){
			t[i] = s[t[i] - '0'];
		}
	}
	cout << t << endl;
	return 0;
}