primes=[2,3,5,7,11,13]
comps=[4,6,8,9,10,12]
cnt={}
for prime in primes:
    for comp in comps:
        num=prime*comp
        if num not in cnt:
            cnt[num]=0
        cnt[num]+=1
K=int(input())
if K not in cnt:
    print(0)
else:
    print(cnt[K]/36)