using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace homework5
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("請輸入班級人數");
            int arraysize = int.Parse(Console.ReadLine());
            double[] grade = new double[arraysize+1];

            double total = 0;
            double average;

            for (int i = 1; i <= arraysize; i++)
            {
                Console.WriteLine("請輸入第"+i+"位同學的成績");
                grade[i] = double.Parse(Console.ReadLine());
                total = total + grade[i];
            }

            Console.WriteLine("------------------");
            Console.WriteLine("成績總表");
            Console.WriteLine("------------------");
            Console.WriteLine("座號\t成績");
            Console.WriteLine("------------------");

            for (int i = 1; i <= arraysize; i++)
            {
                Console.WriteLine(i + "\t" + grade[i]);
            }
            Console.WriteLine("------------------");

            average = total / arraysize;

            Console.WriteLine("總分\t"+total);
            Console.WriteLine("平均\t"+average);
            Console.WriteLine("------------------");


        }
    }
}