import java.io.PrintWriter;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        int count = 0;
        int result = 0;
        for (int i = 1; i <= N; i += 2) {
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    count++;
                }
            }
            if (count == 8) {
                result++;
            }
            count = 0;
        }

        PrintWriter out = new PrintWriter(System.out);
        out.println(result);
        out.flush();
        sc.close();
    }
} import java.io.PrintWriter; PrintWriter java.io import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        int count = 0;
        int result = 0;
        for (int i = 1; i <= N; i += 2) {
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    count++;
                }
            }
            if (count == 8) {
                result++;
            }
            count = 0;
        }

        PrintWriter out = new PrintWriter(System.out);
        out.println(result);
        out.flush();
        sc.close();
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        int count = 0;
        int result = 0;
        for (int i = 1; i <= N; i += 2) {
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    count++;
                }
            }
            if (count == 8) {
                result++;
            }
            count = 0;
        }

        PrintWriter out = new PrintWriter(System.out);
        out.println(result);
        out.flush();
        sc.close();
    } main {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        int count = 0;
        int result = 0;
        for (int i = 1; i <= N; i += 2) {
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    count++;
                }
            }
            if (count == 8) {
                result++;
            }
            count = 0;
        }

        PrintWriter out = new PrintWriter(System.out);
        out.println(result);
        out.flush();
        sc.close();
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = Integer.parseInt(sc.next()); N Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int count = 0; count 0 int result = 0; result 0 for (int i = 1; i <= N; i += 2) {
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    count++;
                }
            }
            if (count == 8) {
                result++;
            }
            count = 0;
        } int i = 1; int i = 1; i 1 i <= N i N i += 2 i += 2 i 2 {
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    count++;
                }
            }
            if (count == 8) {
                result++;
            }
            count = 0;
        } {
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    count++;
                }
            }
            if (count == 8) {
                result++;
            }
            count = 0;
        } for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    count++;
                }
            } int j = 1; int j = 1; j 1 j <= i j i j++ j++ j {
                if (i % j == 0) {
                    count++;
                }
            } {
                if (i % j == 0) {
                    count++;
                }
            } if (i % j == 0) {
                    count++;
                } i % j == 0 i % j i j 0 {
                    count++;
                } count++ count if (count == 8) {
                result++;
            } count == 8 count 8 {
                result++;
            } result++ result count = 0 count 0 PrintWriter out = new PrintWriter(System.out); out new PrintWriter(System.out) out.println(result) out.println out result out.flush() out.flush out sc.close() sc.close sc String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        int count = 0;
        int result = 0;
        for (int i = 1; i <= N; i += 2) {
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    count++;
                }
            }
            if (count == 8) {
                result++;
            }
            count = 0;
        }

        PrintWriter out = new PrintWriter(System.out);
        out.println(result);
        out.flush();
        sc.close();
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        int count = 0;
        int result = 0;
        for (int i = 1; i <= N; i += 2) {
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    count++;
                }
            }
            if (count == 8) {
                result++;
            }
            count = 0;
        }

        PrintWriter out = new PrintWriter(System.out);
        out.println(result);
        out.flush();
        sc.close();
    }
} Main
import java.io.PrintWriter;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        int count = 0;
        int result = 0;
        for (int i = 1; i <= N; i += 2) {
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    count++;
                }
            }
            if (count == 8) {
                result++;
            }
            count = 0;
        }

        PrintWriter out = new PrintWriter(System.out);
        out.println(result);
        out.flush();
        sc.close();
    }
}