#include <iostream>
using namespace std;
int main(){
    string s,t;cin>>s>>t;
    for(int i = 0; t.size() > i; i++){
        if('0' <= t[i] && t[i] <= '9'){
            cout << s[t[i]-'0'];
        }else{
            cout << t[i];
        }
    }
    cout << endl;
}