#include<bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
    string a,b;
    cin>>a>>b;
    string ans="";
    for(char c:b){
        if(c>='a'&&c<='z'){
            ans += c;
        }
        else{
            ans += a[c-'0'];
        }
    }
    cout<<ans<<endl;
}