public static void main(String[] args) throws Exception {
        ArrayList<String> list = new ArrayList<String>();
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        String maxLength = "";
        String minLength = "                     ";
        int minLengthInd = 0;
        int maxLengthInd = 0;

        for (int i = 0; i < 10; i ++) {
            String s = reader.readLine();
            list.add(s);

            if (s.length() <= minLength.length()) {
                minLength = s;
                minLengthInd = i;
            }

            if (s.length() >= maxLength.length()) {
                maxLength = s;
                maxLengthInd = i;
            }
        }

        if (maxLengthInd < minLengthInd) {
            System.out.println(maxLength);
        } else {
            System.out.println(minLength);
        }
    }