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: Accepted)

<?php
$n = fgets(STDIN);
$ans=0;
for($i=1;$i<=$n;$i++){
	$hati=0;
	if($i%2==1){
		for($k=1;$k<=$i;$k++){
			if($i%$k==0){
				$hati++;
			}
		}
		if($hati==8){
			$ans++;
		}
	}
}
echo $ans;