using System;

using System.Linq;

using System.Collections.Generic;

public class Data

{

    String name;

    int months;

    String offer;

    double fees;

    public Data(String name,int months,String offer,double fees)

    {

        this.name = name;

        this.months = months;

        this.offer = offer;

        this.fees=fees;

    }

    public string Name

    {

        get { return name;  }

        set { name = value; }

    }

    public int Months

    {

        get { return months; }

        set { months = value; }

    }

    public string Offer

    {

        get { return offer; }

        set { offer = value; }

    }

    public double Fees

    {

        get { return fees; }

        set { fees = value; }

    }

}

public class Program

{

    public static void Main()

    {

        String id="s11112";

        String sub=id.Substring(1);

        char[] idno = sub.ToCharArray();

        int[] m=new int[idno.Length];

        String name=" ";

        String offer = " ";

        int months=0;

        double fees=0.0;

        double maxFees = double.MinValue;

        double minFees=double.MaxValue;

        String maxName=" ";

        String minName=" ";

        int maxMonths=0;

        int minMonths=0;

        List<Data> objList = new List<Data>();

        for (int i = 0;i < idno.Length;i++)

        {

            m[i] = (int)Char.GetNumericValue(idno[i]); 

        }

        int maxValue = m.Max();

        int M;

        if(maxValue <4)

        {

            M=2;

        }

        else

        {

            M=maxValue;

        }

        Console.WriteLine("Welcome to use Sport Membership Calculator");

        for(int i=0;i<M;i++)

        {

            Console.Write("Enter customer name " +(i+1)+ ":");

            name=Console.ReadLine();

            while(true)

            {

                Console.Write("Enter the number of months:");

                months=Convert.ToInt32(Console.ReadLine());

                if(months>=1 && months<=60)

                {

                    Console.Write("Ether yes or no to indicate a special offer:");

                    offer=Console.ReadLine();

                    if(months>=1 && months<=6)

                    {

                        if(offer=="yes"||offer=="Yes")

                            {

                                fees=months*30.0*0.15;

                                break;

                            }

                        else

                            {

                                fees=months*30.0;

                                break;

                            }

                    }

                    else if(months>6 && months<=12)

                    {

                        if(offer=="yes"||offer=="Yes")

                            {

                                fees=months*27.5*0.15;

                                break;

                            }

                        else

                            {

                                fees=months*27.0;

                                break;

                            }

                    }

                    else if(months>12&& months<=60)

                    {

                        if(offer=="yes"||offer=="Yes")

                            {

                                fees=months*25.0*0.15;

                                break;

                            }

                        else

                            {

                                fees=months*25.0;

                                break;

                            }

                    }

                }  

                else

                    Console.WriteLine("Invalid months please enter months between 1 - 60");      

            }

            Console.WriteLine("The membeship of fee from "+name+" is $"+fees);

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

            objList.Add(new Data(name,months,offer,fees));

        }

        Console.WriteLine("\t\t\t Summary of Membership Fee");

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

        Console.WriteLine("\t Name \t\t Months \t\t SpecialOffer \t\t Charge");

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

        foreach (var record in objList)

        {

            Console.WriteLine("\t {0,-18}{1,-18}{2,-18}{3,-18}", record.Name, record.Months,record.Offer,record.Fees);  

        }

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

        foreach (var record in objList)

        {

            if (record.Fees > maxFees)

            {

                maxFees = record.Fees;

                maxName=record.Name;

            }

            if (record.Months>=6)

            {

                maxMonths++;

            }

            else

            {

                minMonths++;

            }

        }

        Console.WriteLine("The customer spending most is " + maxName +" $"+ maxFees);

        foreach (Data record in objList)

        {

            if (record.Fees < minFees)

            {

                minFees = record.Fees;

                minName=record.Name;

            }

        }

        Console.WriteLine("The customer spending least is " + minName+" $"+ minFees);

        Console.WriteLine("The number of member with < 6 months: "+minMonths);

        Console.WriteLine("The number of member with >= 6 months: "+maxMonths);

    }

}