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: Runtime Error)

using System;
class TofuBC
{
static void Main(){
	var a = int.Parse(Console.ReadLine());
	int[] b = {};
	int bi = 0;
	int i = 0;
	int ii  = 0;
	bool GO = true;
	int last=0;
	for(i=2;i<=(a/2);i++){
		for(ii=bi;ii<0;ii-=1)if(b[ii]==b[bi])GO = false;
		if(a%i==0&&GO==true){
			b[bi]=i;
			bi++;
				}	
		GO = true;
			}
	
	if(bi==3)last = 1;
	Console.Write("{0}",last);
	}
}