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 JavaScript (node.js v5.12) (judge verdict: Accepted)

function Divisor(num) {
    var ret = 0;
    for (var p = 1; p <= num; p++) if (num % p == 0) ret++;
    return ret;
}
function Main(input) {
    var cnt = 0;
    N = Number(input);
    for (var i = 1; i <= N; i+=2) if (Divisor(i) == 8) cnt++;
    console.log(cnt);
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));