import sys
if sys.platform =='ios':
	import clipboard
	a=clipboard.get()
	a = a.split('\n')
	text = '\n'.join(a)
	with open('input_file.txt','w') as f:
		f.write(text)
	sys.stdin = open('input_file.txt')
	
A = list(map(int,input().split()))
cnt = 0
if A[0] == A[2]:
	exit(print(0))
	
if max(A) == A[1] or min(A) == A[1]:
	print("INF")
	exit()
else:
	for i in range(2,1001):
		if A[0]%i != A[2]%i and A[1]%i > A[0]%i and A[1]%i > A[2]%i:
			cnt += 1
		elif A[0]%i != A[2]%i and A[1]%i < A[0]%i and A[1]%i < A[2]%i:
			cnt += 1
			
print(cnt)