using System;

namespace VendingMachine
{
	public class VendingMachine
	{
		public static void Main()
		{
			string command = Console.ReadLine();
			int coinsInserted = 0;
			int moneyAvailable = 0;

			while (command != "Start")
			{
				coinsInserted = int.Parse(command);

				if (coinsInserted != 0.1 ||
					coinsInserted != 0.2 ||
					coinsInserted != 0.5 ||
					coinsInserted != 1 ||
					coinsInserted != 2)
				{
					Console.WriteLine($"Cannot accept {coinsInserted}");
					continue;
				}
				moneyAvailable += coinsInserted;
			}
		}
	}
}