using System;

public class Program

{

    public static bool k(int[]arr, int x)

    {

        int ix=0;

        int count=0;

        for(int i=0;i<arr.Length;i++)

        {

            for(int v=i+1;v<arr.Length;v++)

            {

            if(arr[i]+arr[v]==x)

                {

                return true;    

                }

            }

        }

        return false;

    }

    public static void Main()

    {

        int x=8;

        int[] arr=new int[3]{5,7,4};

        bool b = k(arr, x);

        Console.WriteLine(b);

    }

    }

​

​