import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    try {
      int n = sc.nextInt();
      int ans = 0;
      for (int i = 1; i <= n; i++) {
        if (i % 2 == 0) continue;
        int cnt = 0;
        for (int j = 1; j <= i; j++) if (i % j == 0) cnt++;
        if (cnt == 8) ans++;
      }
      System.out.println(ans); 
    } finally {
      sc.close();
    }
  }
} import java.util.*; util.* java public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    try {
      int n = sc.nextInt();
      int ans = 0;
      for (int i = 1; i <= n; i++) {
        if (i % 2 == 0) continue;
        int cnt = 0;
        for (int j = 1; j <= i; j++) if (i % j == 0) cnt++;
        if (cnt == 8) ans++;
      }
      System.out.println(ans); 
    } finally {
      sc.close();
    }
  }
} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    try {
      int n = sc.nextInt();
      int ans = 0;
      for (int i = 1; i <= n; i++) {
        if (i % 2 == 0) continue;
        int cnt = 0;
        for (int j = 1; j <= i; j++) if (i % j == 0) cnt++;
        if (cnt == 8) ans++;
      }
      System.out.println(ans); 
    } finally {
      sc.close();
    }
  } main {
    Scanner sc = new Scanner(System.in);
    try {
      int n = sc.nextInt();
      int ans = 0;
      for (int i = 1; i <= n; i++) {
        if (i % 2 == 0) continue;
        int cnt = 0;
        for (int j = 1; j <= i; j++) if (i % j == 0) cnt++;
        if (cnt == 8) ans++;
      }
      System.out.println(ans); 
    } finally {
      sc.close();
    }
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) try {
      int n = sc.nextInt();
      int ans = 0;
      for (int i = 1; i <= n; i++) {
        if (i % 2 == 0) continue;
        int cnt = 0;
        for (int j = 1; j <= i; j++) if (i % j == 0) cnt++;
        if (cnt == 8) ans++;
      }
      System.out.println(ans); 
    } finally {
      sc.close();
    } {
      sc.close();
    } sc.close() sc.close sc {
      int n = sc.nextInt();
      int ans = 0;
      for (int i = 1; i <= n; i++) {
        if (i % 2 == 0) continue;
        int cnt = 0;
        for (int j = 1; j <= i; j++) if (i % j == 0) cnt++;
        if (cnt == 8) ans++;
      }
      System.out.println(ans); 
    } int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int ans = 0; ans 0 for (int i = 1; i <= n; i++) {
        if (i % 2 == 0) continue;
        int cnt = 0;
        for (int j = 1; j <= i; j++) if (i % j == 0) cnt++;
        if (cnt == 8) ans++;
      } int i = 1; int i = 1; i 1 i <= n i n i++ i++ i {
        if (i % 2 == 0) continue;
        int cnt = 0;
        for (int j = 1; j <= i; j++) if (i % j == 0) cnt++;
        if (cnt == 8) ans++;
      } {
        if (i % 2 == 0) continue;
        int cnt = 0;
        for (int j = 1; j <= i; j++) if (i % j == 0) cnt++;
        if (cnt == 8) ans++;
      } if (i % 2 == 0) continue; i % 2 == 0 i % 2 i 2 0 continue; int cnt = 0; cnt 0 for (int j = 1; j <= i; j++) if (i % j == 0) cnt++; int j = 1; int j = 1; j 1 j <= i j i j++ j++ j if (i % j == 0) cnt++; if (i % j == 0) cnt++; i % j == 0 i % j i j 0 cnt++ cnt if (cnt == 8) ans++; cnt == 8 cnt 8 ans++ ans System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    try {
      int n = sc.nextInt();
      int ans = 0;
      for (int i = 1; i <= n; i++) {
        if (i % 2 == 0) continue;
        int cnt = 0;
        for (int j = 1; j <= i; j++) if (i % j == 0) cnt++;
        if (cnt == 8) ans++;
      }
      System.out.println(ans); 
    } finally {
      sc.close();
    }
  }
} public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    try {
      int n = sc.nextInt();
      int ans = 0;
      for (int i = 1; i <= n; i++) {
        if (i % 2 == 0) continue;
        int cnt = 0;
        for (int j = 1; j <= i; j++) if (i % j == 0) cnt++;
        if (cnt == 8) ans++;
      }
      System.out.println(ans); 
    } finally {
      sc.close();
    }
  }
} Main
import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    try {
      int n = sc.nextInt();
      int ans = 0;
      for (int i = 1; i <= n; i++) {
        if (i % 2 == 0) continue;
        int cnt = 0;
        for (int j = 1; j <= i; j++) if (i % j == 0) cnt++;
        if (cnt == 8) ans++;
      }
      System.out.println(ans); 
    } finally {
      sc.close();
    }
  }
}
