(define n (read))
(define a '())
(let loop((i 0))
	(if (= i n)
		'()
		(begin
			(let ((p (read)) (q (read)))
				(set! a (cons (/ p q) a))
			)
			(loop (+ i 1))
		)
	)
)
(set! a (reverse (sort a)))
(for-each (lambda (x) (print (numerator x) " " (denominator x))) a)