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 Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int answer = 0;
		for (int targetNum = 1; targetNum <= n; targetNum++) {
			int divisorCount = 0;
			if (targetNum % 2 == 0) {
				continue;
			}
			for (int i = 1; i <= targetNum; i++) {
				if (targetNum % i == 0) {
					divisorCount++;
				}
			}
			if (divisorCount == 8) {
				answer++;
			}
		}

		System.out.println(answer);

		sc.close();
	}
}