백준 8393 Java 합

https://www.acmicpc.net/problem/8393

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main{
    public static void main(String[] args) throws IOException {

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        int N = Integer.parseInt(br.readLine());
        br.close();
        int s =0;

        for(int i=0; i<N; i++) {
            s += i+1;
        }

        System.out.println(s);

    }
}코드를 입력하세요