smartLily

public class smartLily {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int age = Integer.parseInt(input.nextLine());
        double washingMachinePrice = Double.parseDouble(input.nextLine());
        int toyPrice = Integer.parseInt(input.nextLine());
        int totalToysCollected=0;
        double moneySaved=0;
        for (int i = 1; i <= age; i++) {
            if(i%2==1){
            totalToysCollected++;
            }else{
            moneySaved+=i/2*10;
            moneySaved-=1.00;
            }
        }
        double totalToysPrice = totalToysCollected*toyPrice;
        double totalMoney=totalToysPrice+moneySaved;
        if(washingMachinePrice<=totalMoney){
            double leftover=totalMoney-washingMachinePrice;
            System.out.printf("Yes! %.2f",leftover);
        }else{
            double notEnoughMoney=washingMachinePrice-totalMoney;
            System.out.printf("No! %.2f",notEnoughMoney);
        }
    }
}