[JAVA] 백준 8393번 - 합

 

 

 

<코드>

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		
		System.out.println(n*(n+1)/2);
		
	}
}

 

 

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

8393번: 합