[백준/파이썬] 8393번 합

-Code

import java.util.Scanner;

public class Main {

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

}