using System;
using static System.Console;

namespace The_begining
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            var divisibleBy2 = 0;
            var divisibleBy3 = 0;
            var divisibleBy4 = 0;
            var p1 = 0;
            for (int i = 0; i < n; i++)
            {
                int numbers = int.Parse(Console.ReadLine());

                if (numbers % 2 == 0)
                {

                    divisibleBy2++;
                    p1 = (divisibleBy2 / 10) * 100;

                }
                if (numbers % 3 == 0)
                {
                    divisibleBy3++;


                }
                if (numbers % 4 == 0)
                {
                    divisibleBy4++;


                }
            }
            Console.WriteLine(p1);
        }
    }
}