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 (3.8.2) (judge verdict: Accepted)

def abc106b_105():
    n = int(input())
    cnt = 0
    for i in range(1, n + 1):
        if i % 2 == 0: continue
        yaku_cnt = 0
        for j in range(1, i + 1):
            if i % j == 0:
                yaku_cnt += 1
        if yaku_cnt == 8:
            cnt += 1

    print(cnt)


abc106b_105()