A = list(map(int, input().split()))

if ((A[0] < A[1] > A[2] or A[0] > A[1] < A[2]) and A[0] != A[2]):
    print("INF")
else:
    cnt = 0
    for p in range(1, max(A)+1):
        B = [x % p for x in A]
        if ((B[0] < B[1] > B[2] or B[0] > B[1] < B[2]) and B[0] != B[2]):
            cnt += 1
    print(cnt)