import math
import sys
def S(): return sys.stdin.readline().rstrip()
def I(): return int(sys.stdin.readline().rstrip())
def MI(): return map(int, sys.stdin.readline().rstrip().split())
def LI(): return list(map(int, sys.stdin.readline().rstrip().split()))
def LS(): return list(sys.stdin.readline().rstrip().split())

a = LI()

ans = 0
for i in range(1, 1001):
    b0 = a[0]%i
    b1 = a[1]%i
    b2 = a[2]%i
    if b1 > b0 and b1 > b2 and b0 != b2:
        ans += 1
    elif b1 < b0 and b1 < b2 and b0 != b2:
        ans += 1

if a[1] > a[0] and a[1] > a[2] and a[0] != a[2]:
    ans = "INF"
elif a[1] < a[0] and a[1] < a[2] and a[0] != a[2]:
    ans = "INF"

print(ans)