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)

using System;

namespace ABC106_B_105
{
	internal class Program
	{
		public static void Main(string[] args)
		{
			int n = int.Parse(Console.ReadLine());
			int yakusuu = 0;
			int value = 0;

			for (int i = 1; i <= n; i += 2)
			{
				yakusuu = 0;
				for (int j = 1; j <= i; j++) {
					if (i % j == 0)
					{
						yakusuu++;
					}
				}

				if (yakusuu == 8)
				{
					value++;
				}
			}
			
			Console.Write(value);
		}
	}
}