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 PHP (5.6.30) (judge verdict: Wrong Answer)

<?php
while($a = intval(trim(fgets(STDIN)))) {
  if($a % 2 === 0) continue;
  $result = 0;
  $yaku = 0;

  for($i = 1; $i <= $a; $i++) {
    if($a % $i === 0) {
      $yaku++;
    }
  }

  if($yaku === 8) {
    $result++;
  }

  echo $result;
}