import java.util.*;

public class Main {

    public static void main(String args[]) {

        // 入力
        Scanner sc = new Scanner(System.in);
        int n = Integer.parseInt(sc.next());
        sc.close();

        // 主処理
        int[] divCount = new int[n + 1];
        for (int i = 1; i <= n; i += 2) {
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    divCount[i]++;
                }
            }
        }

        int result = 0;
        for (int count : divCount) {
            if (count == 8) {
                result++;
            }
        }

        // 出力
        System.out.println(result);
    }
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz