백준 8393번: 합 [입출력][Java]

www.acmicpc.net/problem/8393

8393번: 합

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		int N = sc.nextInt();
		int cnt = 0;
		for (int i = 1; i <=N; i++) {
			cnt+=i;
		}

		System.out.println(cnt);
	}

}