int main()
{
string s;

getline(cin, s);

for (auto &c : s)
    if (c >= 'a' && c <= 'z') c = (c - 'a'+1 ) % 26 + 'a';
    else if (c >= 'A' && c <= 'Z') c = (c - 'A' + 1) % 26 + 'A';

cout << s << endl;

return 0;

}