#!/usr/bin/ici
auto cchar, c, cap;
while(cchar=getchar()) {
 c = toint(cchar); cap = c & 32;
 c &= ~cap;
 c = ((c >= 'A') && (c <= 'Z') ? ((c - 'A' + 13) % 26 + 'A') : c) | cap;
 printf(tochar(c));
}