choice = 'lose; // or 'lose

@define foo(fn)
{
	fn();
}

@define win(k)
{
	foo(@lambda() { k(nil); });
}

@define lose(k)
{
	apply(foo, [ @lambda() { k(nil); } ]);
}

callcc(@lambda(k) {
		if(choice == 'win)
			win(k);
		else
			lose(k);
	});