Hi,
Please give me an advise what am I missing here?
literally my output is double then the correct one
Thanks in advance
package com.codegym.task.task04.task0442;
/*
Adding
*/
import java.io.*;
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int x = Integer.parseInt(br.readLine());
int sum = 0;
for (int i = -1; i <= x; ++i) {
sum += i;
}
System.out.println(sum);
}
}