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 Scala (2.11.7) (judge verdict: Accepted)

import scala.io.StdIn._
import scala.math._

/**
 * ABC106B
 */
object Main extends App {

  val n = readInt

  def fcnt(num: Int) = {
    (1 to num).filter(_ % 2 == 1).count(v => num % v == 0)
  }

  val ans = (2 to n).count(fcnt(_) == 8)

  println(ans)
}