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

using ll=long long;

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