using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        List<int> ints = new List<int>();

        ints.Add(5);

        Console.WriteLine(ints[0]);

        ints[0]++;

        ++ints[0];

        Console.WriteLine(ints[0]);

        Dictionary<int, int> dict = new Dictionary<int, int>();

        dict[0] = 4;

        dict[0]++;

        Console.WriteLine(dict[0]);

    }

}