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

namespace ConsoleApplication10
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Enter the amount of students in the class.");
            int amount = int.Parse(Console.ReadLine());
            string[] studentname = new string[amount];
            double[] grades = new double[amount];
            double highestGrade=0;
            double avergaeGrade;
            double totalgrades = 0;
            string highestgradestudent= "";

             for(int i=0; i<amount;i++)
            {
                Console.WriteLine("Enter the name of student{0} .", i+1);
                studentname[i] = Console.ReadLine();
                Console.WriteLine("Enter the grades of student{0} .", i + 1);
                grades[i] = double.Parse(Console.ReadLine());
                totalgrades = totalgrades + grades[i];
                if (grades[i] > highestGrade)
                {
                    highestGrade = grades[i];
                    highestgradestudent = studentname[i];
                }
            }

            avergaeGrade = totalgrades / amount;
            Console.WriteLine("Average of student's grades are: " + avergaeGrade);
            //highestGrade = grades.Max();
            Console.WriteLine("Highest  grades are: " + highestGrade + " of " + highestgradestudent);

            Console.ReadLine();
        }
    }
}