let x = 17
let y = 34
let s = 0

do

	if x < 1 then

		break

	endif

	if s = 1 then

		print x

	endif

	if s = 0 then

		let s = 1

	endif

	let a = x
	let e = a % 2
	let e = 1 - e

	if e = 0 then

		let t = t + y
		print x, " ", y

	endif

	let a = x
	let a = int(a / 2)
	let x = a
	let a = y
	let a = 2 * a
	let y = a

loop x >= 1

print "="
print t