using System;

public class Program

{

    public static void Main()

    {

        string[] nama = new string[20];

        int[] nilaiQuiz = new int[100];

        int[] nilaiUts = new int[100];

        int[] nilaiUas = new int[100];

        double[] total = new double[100];

        string[] huruf = new string[20];

        int a, b = 0;

        Console.Write("Inputkan Jumlah Mahasiswa :   ");

        b = int.Parse(Console.ReadLine());

        for (a = 1; a <= b; a++)

        {

            Console.WriteLine("Inputkan Mahasiswa ke "   + a);

            Console.Write("\t Inputkan Nama Mahasiswa    : ");

            nama[a] = Console.ReadLine();

            Console.Write("\t Inputkan Nilai Quiz        : ");

            nilaiQuiz[a] = int.Parse(Console.ReadLine());

            Console.Write("\t Inputkan Nilai UTS         : ");

            nilaiUts[a] = int.Parse(Console.ReadLine());

            Console.Write("\t Inputkan Nilai UAS         : ");

            nilaiUas[a] = int.Parse(Console.ReadLine());

            total[a] = 0.2 * nilaiQuiz[1] + 0.4 * nilaiUts[a] + 0.4 * nilaiUas[a];

            Console.WriteLine();

            if (total[a] >= 80 && total[a] <= 100)

            {

                huruf[a] = "A ";

            }

            else if (total[a] >= 60 && total[a] <= 79)

            {

                huruf[a] = "B";

            }

            else if (total[a] >= 40 && total[a] <= 59)

            {

                huruf[a] = "C ";

            }

            else if (total[a] >= 20 && total[a] <= 39)

            {

                huruf[a] = "D ";

            }

            if (total[a] >= 0 && total[a] <= 19)

            {

                huruf[a] = "E ";

            }

        }

        Console.Clear();

        Console.WriteLine("|=========================================================|");

        Console.WriteLine("------------------Sistem Akademik UNAS---------------------");

        Console.WriteLine("==========================================================|");

        Console.WriteLine("No | Nama Mahasiswa |  Quiz |  UTS |  UAS | Total | Nilai |");

        Console.WriteLine("-----------------------------------------------------------");

        for (a = 1; a <= b; a++)

        {

            Console.WriteLine(a + "         " + nama[a] + "\t\t" + nilaiQuiz[a] + "\t\t" + nilaiUts[a] + "\t" + nilaiUas[a] + "\t" + total[a] + "\t" + huruf[a]);

        }

        Console.WriteLine("===========================================================");

        Console.WriteLine("======================TERIMA KASIH=========================");

        Console.WriteLine("===========================================================");

        Console.Read();

    }

}