Small Shop

using System;

class Program
{
    static void Main()
    {
        string product = Console.ReadLine();
        string town = Console.ReadLine();
        double quantity = double.Parse(Console.ReadLine());
        double price = 0;

        if (town == "Sofia")
        {
            if (product == "coffee")
            {
                price = 0.5;
            }
            else if (product == "water")
            {
                price = 0.8;
            }
            else if (product == "beer")
            {
                price = 1.2;
            }
            else if (product == "sweets")
            {
                price = 1.45;
            }
            else if (product == "peanuts")
            {
                price = 1.6;
            }
        }
        else if (town == "Plovdiv")
        {
            if (product == "coffee")
            {
                price = 0.4;
            }
            else if (product == "water")
            {
                price = 0.7;
            }
            else if (product == "beer")
            {
                price = 1.15;
            }
            else if (product == "sweets")
            {
                price = 1.30;
            }
            else if (product == "peanuts")
            {
                price = 1.5;
            }
        }
        else if (town == "Varna")
        {
            if (product == "coffee")
            {
                price = 0.45;
            }
            else if (product == "water")
            {
                price = 0.7;
            }
            else if (product == "beer")
            {
                price = 1.10;
            }
            else if (product == "sweets")
            {
                price = 1.35;
            }
            else if (product == "peanuts")
            {
                price = 1.55;
            }
        }
        Console.WriteLine(quantity * price);
    }
}