import math
a,b,c = map(int,input().split())
if math.gcd(a,math.gcd(b,c)) != 1:
    print("INF")
    exit()

M = 4*10**6+5
dp = [0]*M
for i in range(3):
    for j in range((M+a-1)//a):
        if a*j >= M:
            break
        for k in range((M+b-1)//b):
            if a*j + b*k >= M:
                break
            dp[a*j+b*k] = 1
    a,b,c = b,c,a
ans = 0
for i in range(1,M):
    ans += 1-dp[i]
print(ans)