#include <bits/stdc++.h>
using namespace std;
//桁数指定　cout << fixed << setprecision(2)
int main() {
    string a,s;
    cin>>a>>s;
    for(int i=0;i<s.size();i++){
        if(48<=(int)s[i]&&(int)s[i]<=57){
            s[i]=a[(int)s[i]-48];}
    }
    cout<<s<<endl;
}