#include<bits/stdc++.h> using namespace std; string s1,s2; int main(){ cin>>s1>>s2; int len1=s1.size(); for(int i=0;i<len1;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; }