Problem:
Score: 200 points

Problem Statement

The number 105 is quite special - it is odd but still it has eight divisors.
Now, your task is this: how many odd numbers with exactly eight positive divisors are there between 1 and N (inclusive)?

Constraints

N is an integer between 1 and 200 (inclusive).

Input

Input is given from Standard Input in the following format:

N

Output

Print the count.

Sample Input 1

105

Sample Output 1

1

Among the numbers between 1 and 105, the only number that is odd and has exactly eight divisors is 105.

Sample Input 2

7

Sample Output 2

0

1 has one divisor. 3, 5 and 7 are all prime and have two divisors. Thus, there is no number that satisfies the condition.

Solution in Python (2.7.6) (judge verdict: Wrong Answer)

def f(n):
    return len([x for x in range(1, n+1) if (n % x == 0)])

def solve(n):
    return len([x for x in range(105, n+1) if (f(x) == 8)])

assert solve(105) == 1
assert solve(7) == 0
print solve(input())