Student Cables

using System;

class Program
{
    static void Main()
    {
        int n = int.Parse(Console.ReadLine());
        int result = 0;
        int counter = 0;

        for (int i = 0; i < n; i++)
        {
            int numCables = int.Parse(Console.ReadLine());
            string cabType = Console.ReadLine();

            if (cabType == "meters")
            {
                numCables *= 100;
            }
            if (numCables >= 20)
            {
                result += numCables;
                counter++;
            }
        }

        result -= 3 * (counter - 1);
        counter = 0;
        for (int i = result; i >= 504; i -= 504)
        {
            counter++;
            result -= 504;
        }
        Console.WriteLine(counter);
        Console.WriteLine(result);
    }
}