using System;

using System.Collections.Generic;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        Dictionary<string, int[]> dictionary = new Dictionary<string, int[]>();

        dictionary.Add("white", new int[] { 0, 60 });

        dictionary.Add("green", new int[] { 60, 1800 });

        dictionary.Add("yellow", new int[] { 1800, 3000 });

        dictionary.Add("red", new int[] { 3000, 0 });

        Console.WriteLine(JsonConvert.SerializeObject(dictionary));

    }

}