#include<bits/stdc++.h> using namespace std; int main(){ string s2,s1; cin>>s1>>s2; int len=s1.size(); for(int i=0;i<len;i++){ if(s1[i]>='a'&&s1[i]<='z'){ cout<<s2[s1[i]-'a']; } else if(s1[i]>='A'&&s1[i]<='Z'){ cout<<char(s2[s1[i]-'A']-32); } } return 0; }