def iskadomatsu(a,b,c):
	return a != c and (a > b and c > b or b > a and b > c)

A = map(int,raw_input().split())
if iskadomatsu(*A):
	print "INF"
else:
	cnt = 0
	for i in xrange(1,max(A)+1):
		B = map(lambda x: x % i,A)
		if iskadomatsu(*B):
			cnt += 1
	print cnt