Умната Лили

import java.text.DecimalFormat;
import java.util.Scanner;

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

        int age = Integer.parseInt(scanner.nextLine());
        double washingmashine = Double.parseDouble(scanner.nextLine());
        int toysPrice = Integer.parseInt(scanner.nextLine());

        int toysCount = 0;
        int moneyTotal = 0;
        int addedMoney = 10;
        int moneyCount = 0;

        for (int i = 1; i <= age; i++) {

            if(i % 2 == 0){
                moneyCount++;
                moneyTotal += moneyCount * 10;
            }else{
                toysCount++;
            }
        }

        int moneyLeft = moneyTotal + toysCount * toysPrice - moneyCount;

        if(washingmashine > moneyLeft){
            double result = washingmashine - moneyLeft;
            System.out.printf("No! %.2f",result );
        }else{
            double result =  moneyLeft - washingmashine;
            System.out.printf("Yes! %.2f",result );;
        }
    }
}