using System;
 using System.Linq;
 using System.Collections.Generic;
 class Massiiv2{
   public static void Main(string[] arg){
     int[] arvud=Enumerable.Range(1, 10).ToArray();
	 Console.WriteLine("Suurim: "+arvud.Max());
	 Console.WriteLine("Nelja esimese summa: "+arvud.Take(4).Sum());
	 int[] arvud2=arvud.Take(4).ToArray();
	 Console.WriteLine("Tagurpidi: "+string.Join(" ", arvud2.Reverse()));
	 //Console.WriteLine(string.Join(" ", arvud));
   }
 }