A = [int(i) for i in input().split()]
a = 0
for i in range(1,1000 + 1):
	B = []
	B.append(int(A[0]) % i)
	B.append(int(A[1]) % i)
	B.append(int(A[2]) % i)
	if len(set(B)) == 3 and (B[1] == max(B) or B[1] == min(B)):
		a += 1
print (a if 1000 - max(A) != a else 'INF')