#include <iostream>
#include <cassert>
#include <map>

using namespace std;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);

  string A, S; cin >> A >> S;
  map<int, char> mp;
  for (int i = 0; i < A.size(); i++) mp[i] = A[i];
  for (int i = 0; i < S.size(); i++) {
    int d = S[i] - '0';
    if (d >= 0 && d <= 9) {
      S[i] = mp[d];
    }
  }
  cout << S << endl;
  return 0;
}