#include <iostream>
#include <cstdio>
using namespace std;

string key, str;

void translate(char x, char y) { 
if (x >= 'a' && x <= 'z') {
 printf("%c", ((x-'a') - (y-'A') + 26)%26 + 'a' );
 } 
else { 
printf("%c", ((x-'A') - (y-'A') + 26)%26 + 'A');
 } }

int main() {
 cin >> key >> str;
for (int i = 0; i < key.size(); i ++ ) {
    key[i] = (key[i] - 'A') % 32 + 'A';
}

for (int i = 0; i < str.size(); i ++ ) {        
    translate(str[i], key[i%key.size()]);
}

return 0;

Copy

}