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