using System;

namespace Loops
{
    class Program
    {
        static void Main(string[] args)
        {
            int age = int.Parse(Console.ReadLine());
            double washingMachine = double.Parse(Console.ReadLine());
            double toyPrice = double.Parse(Console.ReadLine());
            double moneyFromBirthdays = 0;
            double moneyGift = 10;
            int numOfToys = 0;


            for (int birthday = 1; birthday <= age; birthday++)
            {
                if(birthday % 2 == 0)
                {
                    moneyFromBirthdays += moneyGift;
                    moneyGift += 10;
                    moneyFromBirthdays--;

                }
                else
                {
                    numOfToys++;
                }

                double totalMoneyFromToys = numOfToys * toyPrice;
                double totalMoney = totalMoneyFromToys + moneyFromBirthdays;

                if(washingMachine <= totalMoney)
                {
                    Console.WriteLine($"Yes! {totalMoney - washingMachine:F2}");
                }
                else
                {
                    Console.WriteLine($"No! {washingMachine - totalMoney:F2}");
                }
            }
        }
    }
}