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

class Main {

    public static void main(String[] args) throws Exception {

        try {

            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

            long count = Integer.parseInt(br.readLine());
            long result = 0;
            for (long i = 1; i <= count; i++) {
                if (i % 3 == 0 && i % 5 == 0) {
                    continue;
                } else if (i % 3 == 0) {
                    continue;
                } else if (i % 5 == 0) {
                    continue;
                } else {
                    result += i;
                }
            }

            System.out.println(result);
        } catch (IOException | NumberFormatException e) {
            e.printStackTrace();
            System.exit(0);
        } catch (final Exception e) {
            e.printStackTrace();
            System.exit(0);
        }
    }
} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io class Main {

    public static void main(String[] args) throws Exception {

        try {

            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

            long count = Integer.parseInt(br.readLine());
            long result = 0;
            for (long i = 1; i <= count; i++) {
                if (i % 3 == 0 && i % 5 == 0) {
                    continue;
                } else if (i % 3 == 0) {
                    continue;
                } else if (i % 5 == 0) {
                    continue;
                } else {
                    result += i;
                }
            }

            System.out.println(result);
        } catch (IOException | NumberFormatException e) {
            e.printStackTrace();
            System.exit(0);
        } catch (final Exception e) {
            e.printStackTrace();
            System.exit(0);
        }
    }
} Main public static void main(String[] args) throws Exception {

        try {

            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

            long count = Integer.parseInt(br.readLine());
            long result = 0;
            for (long i = 1; i <= count; i++) {
                if (i % 3 == 0 && i % 5 == 0) {
                    continue;
                } else if (i % 3 == 0) {
                    continue;
                } else if (i % 5 == 0) {
                    continue;
                } else {
                    result += i;
                }
            }

            System.out.println(result);
        } catch (IOException | NumberFormatException e) {
            e.printStackTrace();
            System.exit(0);
        } catch (final Exception e) {
            e.printStackTrace();
            System.exit(0);
        }
    } main {

        try {

            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

            long count = Integer.parseInt(br.readLine());
            long result = 0;
            for (long i = 1; i <= count; i++) {
                if (i % 3 == 0 && i % 5 == 0) {
                    continue;
                } else if (i % 3 == 0) {
                    continue;
                } else if (i % 5 == 0) {
                    continue;
                } else {
                    result += i;
                }
            }

            System.out.println(result);
        } catch (IOException | NumberFormatException e) {
            e.printStackTrace();
            System.exit(0);
        } catch (final Exception e) {
            e.printStackTrace();
            System.exit(0);
        }
    } try {

            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

            long count = Integer.parseInt(br.readLine());
            long result = 0;
            for (long i = 1; i <= count; i++) {
                if (i % 3 == 0 && i % 5 == 0) {
                    continue;
                } else if (i % 3 == 0) {
                    continue;
                } else if (i % 5 == 0) {
                    continue;
                } else {
                    result += i;
                }
            }

            System.out.println(result);
        } catch (IOException | NumberFormatException e) {
            e.printStackTrace();
            System.exit(0);
        } catch (final Exception e) {
            e.printStackTrace();
            System.exit(0);
        } catch (IOException | NumberFormatException e) {
            e.printStackTrace();
            System.exit(0);
        } IOException | NumberFormatException e {
            e.printStackTrace();
            System.exit(0);
        } e.printStackTrace() e.printStackTrace e System.exit(0) System.exit System 0 catch (final Exception e) {
            e.printStackTrace();
            System.exit(0);
        } final Exception e {
            e.printStackTrace();
            System.exit(0);
        } e.printStackTrace() e.printStackTrace e System.exit(0) System.exit System 0 {

            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

            long count = Integer.parseInt(br.readLine());
            long result = 0;
            for (long i = 1; i <= count; i++) {
                if (i % 3 == 0 && i % 5 == 0) {
                    continue;
                } else if (i % 3 == 0) {
                    continue;
                } else if (i % 5 == 0) {
                    continue;
                } else {
                    result += i;
                }
            }

            System.out.println(result);
        } BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) long count = Integer.parseInt(br.readLine()); count Integer.parseInt(br.readLine()) Integer.parseInt Integer br.readLine() br.readLine br long result = 0; result 0 for (long i = 1; i <= count; i++) {
                if (i % 3 == 0 && i % 5 == 0) {
                    continue;
                } else if (i % 3 == 0) {
                    continue;
                } else if (i % 5 == 0) {
                    continue;
                } else {
                    result += i;
                }
            } long i = 1; long i = 1; i 1 i <= count i count i++ i++ i {
                if (i % 3 == 0 && i % 5 == 0) {
                    continue;
                } else if (i % 3 == 0) {
                    continue;
                } else if (i % 5 == 0) {
                    continue;
                } else {
                    result += i;
                }
            } {
                if (i % 3 == 0 && i % 5 == 0) {
                    continue;
                } else if (i % 3 == 0) {
                    continue;
                } else if (i % 5 == 0) {
                    continue;
                } else {
                    result += i;
                }
            } if (i % 3 == 0 && i % 5 == 0) {
                    continue;
                } else if (i % 3 == 0) {
                    continue;
                } else if (i % 5 == 0) {
                    continue;
                } else {
                    result += i;
                } i % 3 == 0 && i % 5 == 0 i % 3 == 0 i % 3 i 3 0 i % 5 == 0 i % 5 i 5 0 {
                    continue;
                } continue; if (i % 3 == 0) {
                    continue;
                } else if (i % 5 == 0) {
                    continue;
                } else {
                    result += i;
                } i % 3 == 0 i % 3 i 3 0 {
                    continue;
                } continue; if (i % 5 == 0) {
                    continue;
                } else {
                    result += i;
                } i % 5 == 0 i % 5 i 5 0 {
                    continue;
                } continue; {
                    result += i;
                } result += i result i System.out.println(result) System.out.println System.out System System.out result String[] args args
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

class Main {

    public static void main(String[] args) throws Exception {

        try {

            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

            long count = Integer.parseInt(br.readLine());
            long result = 0;
            for (long i = 1; i <= count; i++) {
                if (i % 3 == 0 && i % 5 == 0) {
                    continue;
                } else if (i % 3 == 0) {
                    continue;
                } else if (i % 5 == 0) {
                    continue;
                } else {
                    result += i;
                }
            }

            System.out.println(result);
        } catch (IOException | NumberFormatException e) {
            e.printStackTrace();
            System.exit(0);
        } catch (final Exception e) {
            e.printStackTrace();
            System.exit(0);
        }
    }
}