zadacha 1 , 02

using System;
public class Program
{
	public static void Main()
	{
		int n = int.Parse(Console.ReadLine());
		int price = 0;
		for(int i = 0; i < n; i++)
		{
			string command = Console.ReadLine();
			if(command == "treadmill")
			{
				price += 5899;
			}
			else if(command == "cross trainer")
			{
				price += 1699;
			}
			else if(command == "exercise bike")
			{
				price += 1789;
			}
			else if(command == "dumbbells")
			{
				price += 579;
			}
		}
		Console.WriteLine("{0:F2}", price);
	}
}