String rot13(String text) {
    var result = new StringBuilder();

    for (var character : text.toCharArray()) {
        if (character >= 'a' && character <= 'z')
            character = (char) ('a' + (character - 'a' + 13) % 26);
        else if (character >= 'A' && character <= 'Z')
            character = (char) ('A' + (character - 'A' + 13) % 26);

        result.append(character);
    }

    return result.toString();
}

void main() {
    while (true) {
        var text = IO.readln();

        if (text == null)
            return;

        IO.println(rot13(text));
    }
}