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 Ruby (2.3.3) (judge verdict: Wrong Answer)

n = gets.to_i
ans = []

(1..n).each do |i|
  count = 0
  if i % 2 == 1
    (1..i).each do |j|
      if i % j == 0
        count += 1
      end
    end
  end

  if count == 8 && (( i == n && i % 2 == 1) || (i == n - 1 && i % 2 == 0))  
    ans.push(i)
  end
end

puts ans.length