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 PyPy3 (7.3.0) (judge verdict: Accepted)

N = int(input())

res = 0
for i in range(1,N+1):
  if i%2==0: continue
  cnt = 0
  num = i
  for j in range(1, int(i**0.5)+1):
    if num%j==0:
      cnt += 1
      if j != num//j:
        cnt += 1

  if cnt == 8: 
    res += 1

print(res)