a,b,c=map(int,input().split())
ANS=0

if a!=c and a>b and c>b:
    print("INF")

elif a!=c and a<b and c<b:
    print("INF")

else:
    ANS=0

    for i in range(1,1011):
        a2,b2,c2=a%i,b%i,c%i

        if a2!=c2 and a2>b2 and c2>b2:
            ANS+=1
        elif a2!=c2 and a2<b2 and c2<b2:
            ANS+=1
    print(ANS)