_03_ValidUsernames

import java.util.ArrayList;
import java.util.Scanner;

public class _03_ValidUsernames {

    public static void main(String[] args) {
        @SuppressWarnings("resource")
        Scanner input = new Scanner(System.in);
        String usernamesInput = input.nextLine();
        String[] username = usernamesInput.split("[/\\\\() ]+");
        ArrayList<String> validUsernames = new ArrayList<String>();
        for (String user : username) {
            if (isValid(user)) {
                validUsernames.add(user);
            }
        }
        int maxSum = 0;
        int bestIndex = 0;
        for (int i = 0; i < validUsernames.size() - 1; i++) {
            if (validUsernames.get(i).length() + validUsernames.get(i + 1).length() > maxSum) {
                maxSum = validUsernames.get(i).length() + validUsernames.get(i + 1).length();
                bestIndex = i;
            }
        }
        System.out.println(validUsernames.get(bestIndex));
        System.out.println(validUsernames.get(bestIndex + 1));

    }
    private static boolean isValid(String username){

        if (username.length() < 3 || username.length() > 25) {
            return false;
        }
        if (!username.replaceAll("[^a-zA-z_0-9_]", "").equals(username)) {
            return false;
        }
        if (!Character.isLetter(username.charAt(0))) {
            return false;
        }
        return true;
    }
}