import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) {
        try {
            // 標準入力
            InputStreamReader isr = new InputStreamReader(System.in);
            BufferedReader br = new BufferedReader(isr);
            int n = Integer.parseInt(br.readLine());
            int ans = 0;
            for (int i = 1; i <= n; i = i + 2) {
                int count = 0;
                for (int j = 1; j <= i; j++) {
                    if (i % j == 0) {
                        count++;
                    }
                }
                if (count == 8) {
                    ans++;
                }
            }
            System.out.println(ans);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io public class Main {
    public static void main(String[] args) {
        try {
            // 標準入力
            InputStreamReader isr = new InputStreamReader(System.in);
            BufferedReader br = new BufferedReader(isr);
            int n = Integer.parseInt(br.readLine());
            int ans = 0;
            for (int i = 1; i <= n; i = i + 2) {
                int count = 0;
                for (int j = 1; j <= i; j++) {
                    if (i % j == 0) {
                        count++;
                    }
                }
                if (count == 8) {
                    ans++;
                }
            }
            System.out.println(ans);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

} Main public static void main(String[] args) {
        try {
            // 標準入力
            InputStreamReader isr = new InputStreamReader(System.in);
            BufferedReader br = new BufferedReader(isr);
            int n = Integer.parseInt(br.readLine());
            int ans = 0;
            for (int i = 1; i <= n; i = i + 2) {
                int count = 0;
                for (int j = 1; j <= i; j++) {
                    if (i % j == 0) {
                        count++;
                    }
                }
                if (count == 8) {
                    ans++;
                }
            }
            System.out.println(ans);
        } catch (IOException e) {
            e.printStackTrace();
        }
    } main {
        try {
            // 標準入力
            InputStreamReader isr = new InputStreamReader(System.in);
            BufferedReader br = new BufferedReader(isr);
            int n = Integer.parseInt(br.readLine());
            int ans = 0;
            for (int i = 1; i <= n; i = i + 2) {
                int count = 0;
                for (int j = 1; j <= i; j++) {
                    if (i % j == 0) {
                        count++;
                    }
                }
                if (count == 8) {
                    ans++;
                }
            }
            System.out.println(ans);
        } catch (IOException e) {
            e.printStackTrace();
        }
    } try {
            // 標準入力
            InputStreamReader isr = new InputStreamReader(System.in);
            BufferedReader br = new BufferedReader(isr);
            int n = Integer.parseInt(br.readLine());
            int ans = 0;
            for (int i = 1; i <= n; i = i + 2) {
                int count = 0;
                for (int j = 1; j <= i; j++) {
                    if (i % j == 0) {
                        count++;
                    }
                }
                if (count == 8) {
                    ans++;
                }
            }
            System.out.println(ans);
        } catch (IOException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } IOException e {
            e.printStackTrace();
        } e.printStackTrace() e.printStackTrace e {
            // 標準入力
            InputStreamReader isr = new InputStreamReader(System.in);
            BufferedReader br = new BufferedReader(isr);
            int n = Integer.parseInt(br.readLine());
            int ans = 0;
            for (int i = 1; i <= n; i = i + 2) {
                int count = 0;
                for (int j = 1; j <= i; j++) {
                    if (i % j == 0) {
                        count++;
                    }
                }
                if (count == 8) {
                    ans++;
                }
            }
            System.out.println(ans);
        } InputStreamReader isr = new InputStreamReader(System.in); isr new InputStreamReader(System.in) BufferedReader br = new BufferedReader(isr); br new BufferedReader(isr) int n = Integer.parseInt(br.readLine()); n Integer.parseInt(br.readLine()) Integer.parseInt Integer br.readLine() br.readLine br int ans = 0; ans 0 for (int i = 1; i <= n; i = i + 2) {
                int count = 0;
                for (int j = 1; j <= i; j++) {
                    if (i % j == 0) {
                        count++;
                    }
                }
                if (count == 8) {
                    ans++;
                }
            } int i = 1; int i = 1; i 1 i <= n i n i = i + 2 i = i + 2 i i + 2 i 2 {
                int count = 0;
                for (int j = 1; j <= i; j++) {
                    if (i % j == 0) {
                        count++;
                    }
                }
                if (count == 8) {
                    ans++;
                }
            } {
                int count = 0;
                for (int j = 1; j <= i; j++) {
                    if (i % j == 0) {
                        count++;
                    }
                }
                if (count == 8) {
                    ans++;
                }
            } int count = 0; 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) {
                    ans++;
                } count == 8 count 8 {
                    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) {
        try {
            // 標準入力
            InputStreamReader isr = new InputStreamReader(System.in);
            BufferedReader br = new BufferedReader(isr);
            int n = Integer.parseInt(br.readLine());
            int ans = 0;
            for (int i = 1; i <= n; i = i + 2) {
                int count = 0;
                for (int j = 1; j <= i; j++) {
                    if (i % j == 0) {
                        count++;
                    }
                }
                if (count == 8) {
                    ans++;
                }
            }
            System.out.println(ans);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

} public class Main {
    public static void main(String[] args) {
        try {
            // 標準入力
            InputStreamReader isr = new InputStreamReader(System.in);
            BufferedReader br = new BufferedReader(isr);
            int n = Integer.parseInt(br.readLine());
            int ans = 0;
            for (int i = 1; i <= n; i = i + 2) {
                int count = 0;
                for (int j = 1; j <= i; j++) {
                    if (i % j == 0) {
                        count++;
                    }
                }
                if (count == 8) {
                    ans++;
                }
            }
            System.out.println(ans);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) {
        try {
            // 標準入力
            InputStreamReader isr = new InputStreamReader(System.in);
            BufferedReader br = new BufferedReader(isr);
            int n = Integer.parseInt(br.readLine());
            int ans = 0;
            for (int i = 1; i <= n; i = i + 2) {
                int count = 0;
                for (int j = 1; j <= i; j++) {
                    if (i % j == 0) {
                        count++;
                    }
                }
                if (count == 8) {
                    ans++;
                }
            }
            System.out.println(ans);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}
