using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    internal interface IManageClients

    {

        public string MapToId(int v, string value);

        public List<string> MapToValues(string x);

        public bool Send();

        public List<string> Get(string v);

        public bool Check();

    }

    internal class ClientManager2 : IManageClients

    {

        public string MapToId(int v, string value)

        {

            throw new System.NotSupportedException();

        }

​

        public List<string> MapToValues(string x)

        {

            return x.Replace("a", "$").Split().ToList();

        }

​

        public bool Send()

        {

            throw new System.NotSupportedException();

        }

​

        public List<string> Get(string v)

        {

            return v.Split().ToList();

        }

​

        public bool Check()

        {

            return true;

        }

    }

    internal class ClientManager1 : IManageClients 

    {

        public string MapToId(int v, string value)

        {

            return $"{v}---{value}";

        }

​

        public List<string> MapToValues(string x)

        {

            throw new System.NotSupportedException();

        }

​

        public bool Send()

        {

            throw new System.NotSupportedException();

        }

​

        public List<string> Get(string v)

        {

            return v.Split().ToList();

        }

​

        public bool Check()

        {

            throw new System.NotSupportedException();

        }

    }

}