[8393] 합 : Java

 

8393번: 합

 

 

Java

import java.util.*;
class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        
        int n = sc.nextInt();
        int sum = 0;
        
        for(int i=1; i<=n; i++) {
            sum += i;
        }

        System.out.println(sum);
    }
}