/*

​

The sum factor of an array is defined to be the number of times that the sum of the array appears as an element of the array.

So the sum factor of {1, -1, 1, -1, 1, -1, 1} is 4 because the sum of the elements of the array is 1 and 1 appears four times in the array.

And the sum factor of {1, 2, 3, 4} is 0 because the sum of the elements of the array is 10 and 10 does not occur as an element of the array. The sum factor of the empty array { } is defined to be 0.

​

*/

​

​

using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        int[] x={3, 0, 2, -5, 0};

        int result=sumFactor(x);

        System.Console.WriteLine("So the Sum Factor is : "+result);

        System.Console.ReadLine();

    }

    static int sumFactor(int[] a)

    {

        int sum=a.Sum();

        int totalAppearance= a.Where(f=>f==sum).Count();

        System.Console.WriteLine("SUM of the Array : " + sum);

        System.Console.WriteLine("Total Appearance of : " + sum + " in array : " + totalAppearance);

        return totalAppearance;

    }

}