import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int ans = 0;
        for (int i = 1; i <= n; i += 2) {
            int tmp = 0;
            for (int j = 1; j < i; j += 2) {
                if(i % j == 0) {
                    tmp++;
                }
            }
            if(tmp == 7) {
                ans++;
            }
        }
        System.out.println(ans);
    }
} import java.util.Scanner; Scanner java.util public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int ans = 0;
        for (int i = 1; i <= n; i += 2) {
            int tmp = 0;
            for (int j = 1; j < i; j += 2) {
                if(i % j == 0) {
                    tmp++;
                }
            }
            if(tmp == 7) {
                ans++;
            }
        }
        System.out.println(ans);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int ans = 0;
        for (int i = 1; i <= n; i += 2) {
            int tmp = 0;
            for (int j = 1; j < i; j += 2) {
                if(i % j == 0) {
                    tmp++;
                }
            }
            if(tmp == 7) {
                ans++;
            }
        }
        System.out.println(ans);
    } main {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int ans = 0;
        for (int i = 1; i <= n; i += 2) {
            int tmp = 0;
            for (int j = 1; j < i; j += 2) {
                if(i % j == 0) {
                    tmp++;
                }
            }
            if(tmp == 7) {
                ans++;
            }
        }
        System.out.println(ans);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int ans = 0; ans 0 for (int i = 1; i <= n; i += 2) {
            int tmp = 0;
            for (int j = 1; j < i; j += 2) {
                if(i % j == 0) {
                    tmp++;
                }
            }
            if(tmp == 7) {
                ans++;
            }
        } int i = 1; int i = 1; i 1 i <= n i n i += 2 i += 2 i 2 {
            int tmp = 0;
            for (int j = 1; j < i; j += 2) {
                if(i % j == 0) {
                    tmp++;
                }
            }
            if(tmp == 7) {
                ans++;
            }
        } {
            int tmp = 0;
            for (int j = 1; j < i; j += 2) {
                if(i % j == 0) {
                    tmp++;
                }
            }
            if(tmp == 7) {
                ans++;
            }
        } int tmp = 0; tmp 0 for (int j = 1; j < i; j += 2) {
                if(i % j == 0) {
                    tmp++;
                }
            } int j = 1; int j = 1; j 1 j < i j i j += 2 j += 2 j 2 {
                if(i % j == 0) {
                    tmp++;
                }
            } {
                if(i % j == 0) {
                    tmp++;
                }
            } if(i % j == 0) {
                    tmp++;
                } i % j == 0 i % j i j 0 {
                    tmp++;
                } tmp++ tmp if(tmp == 7) {
                ans++;
            } tmp == 7 tmp 7 {
                ans++;
            } 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);
        int n = sc.nextInt();
        int ans = 0;
        for (int i = 1; i <= n; i += 2) {
            int tmp = 0;
            for (int j = 1; j < i; j += 2) {
                if(i % j == 0) {
                    tmp++;
                }
            }
            if(tmp == 7) {
                ans++;
            }
        }
        System.out.println(ans);
    }
} public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int ans = 0;
        for (int i = 1; i <= n; i += 2) {
            int tmp = 0;
            for (int j = 1; j < i; j += 2) {
                if(i % j == 0) {
                    tmp++;
                }
            }
            if(tmp == 7) {
                ans++;
            }
        }
        System.out.println(ans);
    }
} Main
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int ans = 0;
        for (int i = 1; i <= n; i += 2) {
            int tmp = 0;
            for (int j = 1; j < i; j += 2) {
                if(i % j == 0) {
                    tmp++;
                }
            }
            if(tmp == 7) {
                ans++;
            }
        }
        System.out.println(ans);
    }
}