Criminals

//package kilpaohjelmointi;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;


public class Kilpaohjelmointi {
  
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        int n = s.nextInt();
        s.nextLine();
        Set<String> set = new HashSet<>();
        ArrayList<String> kaikki = new ArrayList<>();

        boolean pilalla = false;
        for (int i = 0; i < n; i++) {
            String str = s.nextLine();
            if(kaikki.contains(str)) {
                pilalla = true;
                break;
            }
            kaikki.add(str);
            String[] palat = str.split("-"); //virhe?
            set.add(palat[0]);
            
            boolean[] used = new boolean[3];
            
            for (int j = 0; j < 3; j++) {
                for (int k = 0; k < 3; k++) {
                    if(palat[1].charAt(j) == palat[0].charAt(k) && used[k] != true) {
                        used[k] = true;
                        break;
                    }
                } 
            }
            
            for (int j = 0; j < used.length; j++) {
                if(used[j] == false) {
                    pilalla = true;
                }
            }
        }
        
        if(pilalla) {
            System.out.println("QAQ");
        } else {
            System.out.println(set.size());
        }
        
        
    }
    
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: ACCEPTED

Test 19

Verdict: ACCEPTED