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

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