def is_pandigital(x):
	digits = 10*[0]

	while x > 0:
		digit = x % 10
		if digit == 0:
			return False
		digits[digit] += 1
		x /= 10
	
	for i in range(1, 10):
		if digits[i] != 1:
			return False

	return True


def pandigital(x):
	result = str(x * 1)
	count = 1

	while len(result) < 9:
		count += 1
		result += str(x * count)
	
	if len(result) > 9:
		return 0
	
	if is_pandigital(int(result)):
		return int(result)
	
	return 0

max_pd = 0
for i in xrange(9876):
	p = pandigital(i)
	if p > max_pd:
		max_pd = p
	i += 1

print max_pd