import java.io.*;

class Main {
    public static void main(String args[]) throws IOException {
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        Integer inputVal = new Integer(in.readLine());
        Integer outputVal = 0;
        for (int i = 0; i <= inputVal; i++) {
        	if (i % 2 == 0) {
        		continue;
        	}
        	Integer countVal = 0;
        	for (int s = 1;s <= i;s++) {
        		if (i % s == 0) {
        			countVal++;
        		}
        	}
        	if (countVal == 8) {
        		outputVal++;
        	}
        }
        System.out.println(outputVal);
   }
}
/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