Unique count of Winners - java

Certain number of people play a card game. They play N rounds. The names of the winner in each round is passed as the input to the program. The program must print the unique count of the winners.

Input Format: The first line contains the values of N. N lines contain the names of the winners.

Output Format: The first line contains the unique count of winners.

Boundary Conditions:

·         1 <= N <= 100

·         Length of name is from 3 to 100

 Example Input/Output 1:

 Input:

 6

 Arun

 Bhamini

 Arun

 Derek

 Sahul

 Bhamini

Output:

4

Coding:

import java.util.*;

public class Hello

 {

public static void main(String[] args)

{

Scanner s=new Scanner(System.in);

int n=s.nextInt();

HashSet<String> h=new HashSet<>(n);

for(int i=0;i<n;i++)

h.add(s.next());

System.out.println(h.size()); 

}

}