BEGIN {
	print 1 / 10 * 10
	print 1 / (10 * 10)
	print 1 % 10 * 10
	print 1 % (10 * 10)
	print (10 * 5) / 2
	print 10 * (5 / 2)
	a = 5
	b = 3
	print a - 1 - b
	print a + 1 - b
}