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++14 (GCC 5.4.1) (judge verdict: Accepted)

#include <bits/stdc++.h>
using namespace std;
int main() {
	int N;
	cin>>N;
	if(N<=104){
		cout<<0<<endl;
	}
	else if(N<=134){
		cout<<1<<endl;
	}
	else if(N<=164){
		cout<<2<<endl;
	}
	else if(N<=188){
		cout<<3<<endl;
	}
	else if(N<=194){
		cout<<4<<endl;
	}
	else {
		cout<<5<<endl;
	}
}