ChangeTiles

import java.util.Scanner;

public class ChangeTiles {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        double savedMoney = Double.parseDouble(scanner.nextLine());
        double widthFloor = Double.parseDouble(scanner.nextLine());
        double lenghtFloor = Double.parseDouble(scanner.nextLine());
        double heightTriangle = Double.parseDouble(scanner.nextLine());
        double sideTriangle = Double.parseDouble(scanner.nextLine());
        double pricePerTile = Double.parseDouble(scanner.nextLine());
        double priceMaster = Double.parseDouble(scanner.nextLine());

        double areaFloor = widthFloor * lenghtFloor;
        double areaTile = heightTriangle * sideTriangle;
        double neededTiles = Math.ceil(areaFloor / areaTile * 2) + 5;
        double priceForTiles = neededTiles * pricePerTile;
        double totalSpend = priceForTiles + priceMaster;

        if (savedMoney >= totalSpend) {
            System.out.printf("%.2f lv left.", savedMoney - totalSpend);

        } else {
            System.out.printf("You'll need %.2f lv more.", totalSpend - savedMoney);
        }
    }
}