Clever Lily

package com.company;

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int age = Integer.parseInt(scanner.nextLine());
        double washingMachine = Double.parseDouble(scanner.nextLine());
        int cost = Integer.parseInt(scanner.nextLine());
        int toy = 0;
        int money = 0;
        int a = 1;
        for (int i = 1; i <= age; i++) {
            if (i % 2 == 0) {
                money += a * 10;
                money--;
                a++;
            } else {
                toy++;
            }
        }
        money = money + toy * cost;
        if (money >= washingMachine) {
            System.out.printf("Yes! %.2f", (money - washingMachine));
        } else {
            System.out.printf("No! %.2f", (washingMachine - money));
        }
    }
}