#include <bits/stdc++.h> using namespace std; string a,b; int main() { cin>>a>>b; int len1=a.size(); for(int i=0;i<len1;i++){ if(a[i]>='a'&&a[i]<='z'){ cout<<b[a[i]-'a']; } else if(a[i]>='A'&&a[i]<='Z'){ cout<<char(b[a[i]-'A']-32); } } return 0; }