#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
  string S,T;
  cin>>S>>T;
  for(int i=0;i<T.size();i++){
      if(T[i] <= '9') cout<<S[T[i]-'0'];
      else cout<<T[i];
  }
  cout<<endl;
}