Untitled

import java.util.HashSet;
import java.util.Scanner;

public class Main{
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        // Read number of existing gym members
        System.out.print("Number of existing gym members: ");
        int n = scanner.nextInt();

        // Read number of members signed up for the special class
        System.out.print("Number of members signed up for the special class: ");
        int m = scanner.nextInt();

        // HashSet to store existing gym members
        HashSet<Integer> gymMembers = new HashSet<>();

        System.out.println("Enter existing gym member IDs:");
        for (int i = 0; i < n; i++) {
            gymMembers.add(scanner.nextInt());
        }

        System.out.println("Enter special class member IDs:");
        boolean isSubset = true;
        for (int i = 0; i < m; i++) {
            int member = scanner.nextInt();
            if (!gymMembers.contains(member)) {
                isSubset = false;
            }
        }

        // Output result
        if (isSubset) {
            System.out.println("Subset");
        } else {
            System.out.println("Not a subset");
        }

        scanner.close();
    }
}