#include<bits/stdc++.h> using namespace std; int main(){ //replace(开始位置，代替长度，换啥) string s,s2; cin>>s; cin>>s2; int n=s.size(); for(int i=0;i<n;i++){ if(s[i]<='A'&&s[i]>='Z')s[i]=s2[s[i]-'A']-32; else if(s[i]<='a'&&s[i]>='z')s[i]=s2[s[i]-'a']; } cout<<s; return 0; }