a1,a2,a3 = map(int,input().split())
if min([a1,a2,a3]) == a2:
    print('INF')
else:
    cnt=0
    for i in range(3,max([a1,a2,a3])+1):
        b1,b2,b3 = a1%i,a2%i,a3%i
        cnt += b1!=b3 and (b2<b1 and b2 <b3) or (b2>b1 and b2>b3)
    print(cnt)