#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ string str,ex; cin>>str>>ex; for(int i=0;i<str.length();i++){ if('A'<=str[i]&&str[i]<='Z') str[i]=ex[str[i]-'A']-32; else if('a'<=str[i]&&str[i]<='z') str[i]=ex[str[i]-'a']; } cout<<str<<endl; return 0; }