URI-1040 solution is not working for me.

[Mehedy-Hasan]

[I am trying to solve this problem in various ways but sill I am failed. For this reason, I am searching a solution then found your solution but when I try to submit your code it's wrong 5%]

using System;

namespace Extremely_Basic
{
class Program
{
static void Main(string[] args)
{
double a, b, c, d, avg;
string[] values = Console.ReadLine().Split(' ');
a = double.Parse(values[0]);
b = double.Parse(values[1]);
c = double.Parse(values[2]);
d = double.Parse(values[3]);
avg = (a * 2 + b * 3 + c * 4 + d * 1) / (2 + 3 + 4 + 1);
Console.WriteLine("Media: " + Math.Round(avg,1));
if (avg >= 7.0d)
{
Console.WriteLine("Aluno aprovado.");
}
if (avg < 5.0d)
{
Console.WriteLine("Aluno reprovado.");
}
if (avg >= 5.0d && avg <= 6.9d)
{
Console.WriteLine("Aluno em exame.");
Console.Write("Nota do exame: ");
double e = double.Parse(Console.ReadLine());
avg = (avg + e) / 2;
if (avg > 5.0d)
{
Console.WriteLine("Aluno aprovado.");
}
if (avg < 5.0d)
{
Console.WriteLine("Aluno reprovado.");
}
Console.WriteLine("Media final: " + Math.Round(avg,1));
}

        Console.ReadKey();
    }
}

}