commisions

using System;
public class Program
{
    public static void Main()
    {
		double bitcoin = double.Parse(Console.ReadLine());
		double eterum = double.Parse(Console.ReadLine());
		double litecoin = double.Parse(Console.ReadLine());
		int transactions = int.Parse(Console.ReadLine());
		double money = 0;
		double commision = 0;
		double coeff = 0.073456764216789345;
		for(int i = 0; i < transactions; i++)
		{
			int actives = int.Parse(Console.ReadLine());
			string valuta = Console.ReadLine();
			string typeV = Console.ReadLine();
			double operationMoney = 0;
			if(valuta == "bitcoin")
			{
				operationMoney = actives * bitcoin;
			}
			else if(valuta == "eterum")
			{
				operationMoney = actives * eterum;
			}
			else if(valuta == "litecoin")
			{
				operationMoney = actives * litecoin;
			}

			if(typeV == "Sell")
			{
				money -= operationMoney;
			}
			else if(typeV == "Buy")
			{
				money += operationMoney;
			}
			commision += operationMoney * coeff;
		}
		money -= commision;
		Console.WriteLine("{0:F16}", money);
	}
}