using System;

public class Test
{
	public static void Main()
	{
		bool? yes = true;
		bool? no = false;
		bool? maybe = null;
		
		Console.WriteLine($"yes: {yes} {!yes == true}");
		Console.WriteLine($"no: {no} {!no == true}");
		Console.WriteLine($"maybe: {maybe} {!maybe == true}");
	}
}