using System;

public class Program

{

    public static void Main()

    {

        int madrich=0;

        int kvutza8_11=0;

        int kvutza12_15=0;

        for(int i=1; i<=10; i++)

        { Console.WriteLine("enter age:");

          int age = int.Parse(Console.ReadLine());

            if(age>=8 && age<=11)

             { kvutza8_11++;

              if (kvutza8_11%4==0)

              { madrich++;

              }

             }

             else if (age>=12 && age<=15)

             { kvutza12_15++;

                if (kvutza12_15%4==0)

                 { madrich++;

                 }

             }

         }

        Console.WriteLine("eight to eleven: " + kvutza8_11);

        Console.WriteLine("12 to fifteen: " + kvutza12_15);

        Console.WriteLine("Madrichim: " + madrich);

    }

}