Java での Set の使い方

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

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        Set<Integer> set = new HashSet<>();

        for (int i = 1; i < 10; i++) {
            for (int l = i; l < 10; l++) {
                set.add(i * l);
            }
        }

        if (set.contains(n)) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

    }
}