6. Собственные числа Psych Up

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

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        ArrayList<Integer> a = new ArrayList<>();
        ArrayList<Integer> b = new ArrayList<>();
        ArrayList<Integer> c = new ArrayList<>();
        int count = 0;
        int a0 = sc.nextInt();
        int a1 = a0;
        while (a1-- > 0) {
            a.add(sc.nextInt());
        }
        int b0 = sc.nextInt();
        int b1 = b0;
        while(b0-- > 0) {
            b.add(sc.nextInt());
        }
        int c0 = sc.nextInt();
        int c1 = c0;
        while(c1-- > 0) {
            c.add(sc.nextInt());
        }
        if (a0 >= b0 && a0 >= c0) {
            for (Integer i : a)
                if (b.contains(i) && c.contains(i))
                    count++;
        }
        else if (b0 >= a0 && b0 >= c0) {
            for (Integer i : b)
                if (a.contains(i) && c.contains(i))
                    count++;
        }
        else if (c0 >= b0 && c0 >= a0) {
            for (Integer i : c)
                if (a.contains(i) && b.contains(i))
                    count++;
        }
        System.out.println(count);
    }
}