package ConditionalStatements;

import java.util.Scanner;

public class dwe {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String product = scanner.nextLine().toLowerCase();
        String grad = scanner.nextLine().toLowerCase();
        double broika = Double.parseDouble(scanner.nextLine());



        if(grad.equals("sofia")){
            if(product.equals("coffee")){
                System.out.println(broika * 0.50);
            }else if(product.equals("water")){
                System.out.println(broika * 0.80);
            }else if(product.equals("beer")){
                System.out.println(broika * 1.20);
            }else if(product.equals("sweets")){
                System.out.println(broika * 1.45);
            }else if(product.equals("peanuts")){
                System.out.println(broika * 1.60);
            }
        }else  if(grad.equals("plovdiv")) {
            if (product.equals("coffee")) {
                System.out.println(broika * 0.40);
            } else if (product.equals("water")) {
                System.out.printf("%.1f", broika * 0.70);
            } else if (product.equals("beer")) {
                System.out.println(broika * 1.15);
            } else if (product.equals("sweets")) {
                System.out.println(broika * 1.30);
            } else if (product.equals("peanuts")) {
                System.out.println(broika * 1.50);
            }
        }else   if(grad.equals("varna")){
            if(product.equals("coffee")){
                System.out.println(broika * 0.45);
            }else if(product.equals("water")){
                System.out.println(broika * 0.70);
            }else if(product.equals("beer")){
                System.out.println(broika * 1.10);
            }else if(product.equals("sweets")){
                System.out.println(broika * 1.35);
            }else if(product.equals("peanuts")){
                System.out.println(broika * 1.55);
            }

         }
    }
}