"""


"""

import sys
from sys import stdin
import math

A,B,C = map(int,stdin.readline().split())

if math.gcd(math.gcd(A,B),C) != 1:
    print ("INF")
    sys.exit()

mov = max(A,B,C)
dp = [False] * mov + [True]
ans = 0
streak = 0

while True:

    if streak > mov:
        break

    dp.append(dp[-A] or dp[-B] or dp[-C])
    if dp[-1] == True:
        streak += 1
    else:
        streak = 0
        ans += 1
print (ans)