a = [int(x) for x in input().split()]

if a[0] != a[2] and (a[0] < a[1] > a[2] or a[0] > a[1] < a[2]):
    print('INF')
else:
    res = 0
    ma = max(a)
    aa = [[ai % d for ai in a] for d in range(2, ma + 1)]
    for aai in aa:
        if aai[0] == aai[2]:
            continue
        if aai[0] < aai[1] > aai[2] or aai[0] > aai[1] < aai[2]:
            res += 1
    print(res)