# your code goes here
K0=int(input())
def pr (l):
    if l==2:
        return 1
    elif l==3:
        return 1
    elif l==5:
        return 1
    elif l==7:
        return 1
    elif l==11:
        return 1
    elif l==13:
        return 1
    else:
        return 0
def dc(K):
    i=4
    C=0
    while i<=12:
        if K%i==0:
            if pr(K//i)==1:
                C+=1
        if i==8 or i==9:
            i+=1
        else:
           i+=2
    return C
#K=input()
K0=int(K0)
dic=dc(K0)
pr=dc(K0)/36
print(pr)