program Suma;
var a,b,e:integer;
begin
read(a);
b:=1;
if a<0 then
e:=((1+a) div 2)*(((a-1)div((b-1)-1))+1)
else
e:=(a*(a+1)) div 2;
writeln(e);
end.

Check for N = 0.

import java.util.Scanner;

public class P
{
    public static void main(String[] args)
    {
        Scanner input = new Scanner(System.in);
        int a = input.nextInt();
        int b = 1;
        if (a>-10000)
            if (a < 10000)
            {
                if (a >= 1)
                {
                    int e = (a * (a + 1)) / 2;
                    System.out.println(e);
                }
                if (a <= -1)
                {
                    int d = ((1 + a) / 2) * ((a - 1) / ((b - 1) - 1) + 1);
                    System.out.println(d);
                }
                if (a<1)
                  if (a>-1)
                  {
                      System.out.print(a+1);
                  }
            }

    }
}



я уже всё зделал, что они просили. И всё равно не идёт(

Edited by author 21.10.2016 18:08

Edited by author 21.10.2016 18:37

check 2. Prints reply twice.

Edited by author 21.10.2016 18:47

Edited by author 21.10.2016 18:52