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

namespace stpudenti
{
    class stpudenti
    {
        static void Main(string[] args)
        {
            Console.WriteLine("n=");
            int n = int.Parse(Console.ReadLine());

            Console.WriteLine("vuvedete ocenkite na student A");
            double[] ocenkiA = fillArray(n);
            Console.WriteLine("vuvedete ocenkite na student B");
            double[] ocenkiB = fillArray(n);
            Console.WriteLine("ocenkite na student C:");
            double[] ocenkiC = fillRandomArr(n);

            Console.WriteLine("ocenkite na student A ");
            printArray(ocenkiA);
            Console.WriteLine("ocenkite na student B");
            printArray(ocenkiB);
            Console.WriteLine("ocenkite na styudent C");
            printArray(ocenkiC);

            Console.WriteLine("minimalnata ocenka na A");
            Console.WriteLine(minOcenkaA(ocenkiA));
            Console.WriteLine("maksimalnata ocenka na B");
            Console.WriteLine(maxOcenkaB(ocenkiB));

            Console.WriteLine("ocenka po-malka ot sredno aritmetichnoto na C");
            srartNaC(ocenkiC);

            Console.Write("Srednata ocenka na studentite e: ");
            Console.WriteLine(IzchisliSredna(ocenkiA, ocenkiB, ocenkiC));
        }
        static double[] fillArray(int n)
        {
            double[] arr = new double[n];
            for (int i = 0; i < arr.Length; i++)
            {
                arr[i] = double.Parse(Console.ReadLine());
            }
            return arr;
        }
        static double[] fillRandomArr(int n)
        {
            double[] randArr = new double[n];
            Random rand = new Random();
            for (int i = 0; i < randArr.Length; i++)
            {
                randArr[i] = rand.Next(2, 7);
            }
            return randArr;
        }
        static void printArray(double[] arr)
        {
            for (int i = 0; i < arr.Length; i++)
            {
                Console.WriteLine(arr[i]);
            }
            Console.WriteLine();
        }
        static double minOcenkaA(double[] arr)
        {
            double min = double.MaxValue;
            for (int i = 0; i < arr.Length; i++)
            {
                if (arr[i]<min)
                {
                    min = arr[i];
                }
            }
            return min;
        }
        static double maxOcenkaB(double[] arr)
        {
            double max = double.MinValue;
            for (int i = 0; i < arr.Length; i++)
            {
                if (arr[i] > max)
                {
                    max = arr[i];
                }
            }
            return max;
        }
        static void srartNaC(double[] arr)
        {
            double sum=0;
            double minOcenka = int.MaxValue;
            double srart = 0;
            for (int i = 0; i < arr.Length; i++)
            {
                sum+=arr[i];
                srart=sum/arr[i];

                if (arr[i]<srart)
                {
                    srart = arr[i];
                }
                Console.WriteLine(arr[i]);
            }
            Console.WriteLine();
        }
        static double sumOcenki (double [] arr)
        {
            double sum = 0;

            for (int i = 0; i < arr.Length; i++)
            {
                sum += arr[i];
            }
            return sum;
        }
        static double IzchisliSredna(double[] uchenikA, double[] uchenikB, double[] uchenikC)
        {
            double obshtaSuma = sumOcenki(uchenikA) + sumOcenki(uchenikB) + sumOcenki(uchenikC);
            double obshtBroi = uchenikA.Length * 3;
            double srednaOcenka = obshtaSuma / obshtBroi;

            return srednaOcenka;
        }

    }
}