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 C# (Mono 4.6.2.0) (judge verdict: Accepted)

namespace _106_2
{using System;

    class Program
    {
        static void Main(string[] args)
        {
			int N = int.Parse(Console.ReadLine());
			if(N < 105)
			{
				Console.WriteLine("0");
			}
			else if (N < 135)
			{
				Console.WriteLine("1");
			}
			else if (N < 165)
			{
				Console.WriteLine("2");
			}
			else if (N < 189)
			{
				Console.WriteLine("3");
			}
			else if (N < 195)
			{
				Console.WriteLine("4");
			}
			else
			{
				Console.WriteLine("5");
			}
        }
    }
}