using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        SortedList<int,int> sl = new SortedList<int,int>();

        sl.Add(0,1);

        sl.Add(1,2);

        sl.Add(2,3);

        for (int i = 0; i < sl.Count; i++)

        {

            Console.WriteLine(sl[i]);

        }

        sl.Remove(1);

        foreach(int x in sl.Keys)

        {

            Console.WriteLine(sl[x]);

        }

        //Console.WriteLine("Hello World");

    }

}

/*Clear() - Removes all the elements from the sorted list.

ContainsKey(K key) - Returns true when the specified key is present in the sorted list.

ContainsValue(V value) - Returns true when a specified value is present in the sorted list.

IndexOfKey(K key) - Returns the index of the specified key within the sorted list.

IndexOfValue(V value) - Returns the index of the specified value within the sorted list.*/