# No.358 も～っと！門松
a = [int(i) for i in input().split()]

if a[0] == a[2]:
    print(0)
elif min(a) == a[1] or max(a) == a[1]:
    print('INF')
else:
    b = []
    cnt = 0

    for i in range(1, max(a) + 1):
        b = [a[j] % i for j in range(3)]

        if (b[1] == min(b) and b[0] != b[2]) or (b[1] == max(b) and b[0] != b[2]):
            cnt += 1

    print(cnt)