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

int main()
{
    string A, S;
    cin >> A >> S;
    for (auto s : S)
    {
        if ('0' <= s && s <= '9')
        {
            cout << A[s - '0'];
        }
        else
        {
            cout << s;
        }
    }
}