precision 4

define base = 10, c1 = 0, c2 = 0

for k = 1 to (base ^ 2) - 1

	let c1 = c1 + 1

	if k % (base - 1) = (k * k) % (base - 1) then

		let c2 = c2 + 1
		print k

	endif

next k

print "trying ", c2, " numbers instead of ", c1, " numbers saves ", 100 - (100 * c2 / c1), "%"