import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int n = sc.nextInt();
		// スペース区切りの整数の入力
		//int b = sc.nextInt();
		// 文字列の入力
		//String s = sc.next();
        // 出力
        int yaku_c;
        int ok_c = 0;
        for(int i=1; i<=n; i++){
            yaku_c = 0;
            for(int j=1; j<=i; j++){
                if(i%2==0)break;
                if(i%j==0)yaku_c++;
            }
            if(yaku_c == 8)ok_c++;
            //System.out.println("i="+i+" yaku_c="+yaku_c+"\n\n");
        }

		System.out.println(ok_c);
	}
} import java.util.*; util.* java public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int n = sc.nextInt();
		// スペース区切りの整数の入力
		//int b = sc.nextInt();
		// 文字列の入力
		//String s = sc.next();
        // 出力
        int yaku_c;
        int ok_c = 0;
        for(int i=1; i<=n; i++){
            yaku_c = 0;
            for(int j=1; j<=i; j++){
                if(i%2==0)break;
                if(i%j==0)yaku_c++;
            }
            if(yaku_c == 8)ok_c++;
            //System.out.println("i="+i+" yaku_c="+yaku_c+"\n\n");
        }

		System.out.println(ok_c);
	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int n = sc.nextInt();
		// スペース区切りの整数の入力
		//int b = sc.nextInt();
		// 文字列の入力
		//String s = sc.next();
        // 出力
        int yaku_c;
        int ok_c = 0;
        for(int i=1; i<=n; i++){
            yaku_c = 0;
            for(int j=1; j<=i; j++){
                if(i%2==0)break;
                if(i%j==0)yaku_c++;
            }
            if(yaku_c == 8)ok_c++;
            //System.out.println("i="+i+" yaku_c="+yaku_c+"\n\n");
        }

		System.out.println(ok_c);
	} main {
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int n = sc.nextInt();
		// スペース区切りの整数の入力
		//int b = sc.nextInt();
		// 文字列の入力
		//String s = sc.next();
        // 出力
        int yaku_c;
        int ok_c = 0;
        for(int i=1; i<=n; i++){
            yaku_c = 0;
            for(int j=1; j<=i; j++){
                if(i%2==0)break;
                if(i%j==0)yaku_c++;
            }
            if(yaku_c == 8)ok_c++;
            //System.out.println("i="+i+" yaku_c="+yaku_c+"\n\n");
        }

		System.out.println(ok_c);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int yaku_c; yaku_c int ok_c = 0; ok_c 0 for(int i=1; i<=n; i++){
            yaku_c = 0;
            for(int j=1; j<=i; j++){
                if(i%2==0)break;
                if(i%j==0)yaku_c++;
            }
            if(yaku_c == 8)ok_c++;
            //System.out.println("i="+i+" yaku_c="+yaku_c+"\n\n");
        } int i=1; int i=1; i 1 i<=n i n i++ i++ i {
            yaku_c = 0;
            for(int j=1; j<=i; j++){
                if(i%2==0)break;
                if(i%j==0)yaku_c++;
            }
            if(yaku_c == 8)ok_c++;
            //System.out.println("i="+i+" yaku_c="+yaku_c+"\n\n");
        } {
            yaku_c = 0;
            for(int j=1; j<=i; j++){
                if(i%2==0)break;
                if(i%j==0)yaku_c++;
            }
            if(yaku_c == 8)ok_c++;
            //System.out.println("i="+i+" yaku_c="+yaku_c+"\n\n");
        } yaku_c = 0 yaku_c 0 for(int j=1; j<=i; j++){
                if(i%2==0)break;
                if(i%j==0)yaku_c++;
            } int j=1; int j=1; j 1 j<=i j i j++ j++ j {
                if(i%2==0)break;
                if(i%j==0)yaku_c++;
            } {
                if(i%2==0)break;
                if(i%j==0)yaku_c++;
            } if(i%2==0)break; i%2==0 i%2 i 2 0 break; if(i%j==0)yaku_c++; i%j==0 i%j i j 0 yaku_c++ yaku_c if(yaku_c == 8)ok_c++; yaku_c == 8 yaku_c 8 ok_c++ ok_c System.out.println(ok_c) System.out.println System.out System System.out ok_c String[] args args public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int n = sc.nextInt();
		// スペース区切りの整数の入力
		//int b = sc.nextInt();
		// 文字列の入力
		//String s = sc.next();
        // 出力
        int yaku_c;
        int ok_c = 0;
        for(int i=1; i<=n; i++){
            yaku_c = 0;
            for(int j=1; j<=i; j++){
                if(i%2==0)break;
                if(i%j==0)yaku_c++;
            }
            if(yaku_c == 8)ok_c++;
            //System.out.println("i="+i+" yaku_c="+yaku_c+"\n\n");
        }

		System.out.println(ok_c);
	}
} public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int n = sc.nextInt();
		// スペース区切りの整数の入力
		//int b = sc.nextInt();
		// 文字列の入力
		//String s = sc.next();
        // 出力
        int yaku_c;
        int ok_c = 0;
        for(int i=1; i<=n; i++){
            yaku_c = 0;
            for(int j=1; j<=i; j++){
                if(i%2==0)break;
                if(i%j==0)yaku_c++;
            }
            if(yaku_c == 8)ok_c++;
            //System.out.println("i="+i+" yaku_c="+yaku_c+"\n\n");
        }

		System.out.println(ok_c);
	}
} Main
import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int n = sc.nextInt();
		// スペース区切りの整数の入力
		//int b = sc.nextInt();
		// 文字列の入力
		//String s = sc.next();
        // 出力
        int yaku_c;
        int ok_c = 0;
        for(int i=1; i<=n; i++){
            yaku_c = 0;
            for(int j=1; j<=i; j++){
                if(i%2==0)break;
                if(i%j==0)yaku_c++;
            }
            if(yaku_c == 8)ok_c++;
            //System.out.println("i="+i+" yaku_c="+yaku_c+"\n\n");
        }

		System.out.println(ok_c);
	}
}