#include<iostream>
using namespace std ;
int main()
{
	int n;
	cin >> n ;
	int f,s=0;
	for(int i=1;i<=n;i+=2){
		f=0;
		for(int j=1;j<=i;j++)
			if(i%j==0) f++;
		if(f==8) s++;
	}
	cout << s ;
	return 0;
}
### Prompt

Develop a solution in Cpp to the problem described below:

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.

Examples

Input

105


Output

1


Input

7


Output

0

### Response

```cpp
#include<iostream>
using namespace std ;
int main()
{
	int n;
	cin >> n ;
	int f,s=0;
	for(int i=1;i<=n;i+=2){
		f=0;
		for(int j=1;j<=i;j++)
			if(i%j==0) f++;
		if(f==8) s++;
	}
	cout << s ;
	return 0;
}
```