#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int maxn = 2e5+5;
int main(){
    string s,t;
    cin>>s>>t;
    for(int i=0;i<t.length();i++){
        if(t[i]-'0'<10&&t[i]-'0'>=0){
            cout<<s[t[i]-'0'];
        }else cout<<s[i];
    }
    cout<<"\n";
}