import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int number = sc.nextInt();
		sc.close();

		long result = 0;
		for (int i = 1; i <= number; i++) {
			if (i % 3 == 0 && i % 5 == 0) {
				continue;
			} else if (i % 3 == 0) {
				continue;
			} else if (i % 5 == 0) {
				continue;
			}
			result += i;
		}

		System.out.print(result);
	}

} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int number = sc.nextInt();
		sc.close();

		long result = 0;
		for (int i = 1; i <= number; i++) {
			if (i % 3 == 0 && i % 5 == 0) {
				continue;
			} else if (i % 3 == 0) {
				continue;
			} else if (i % 5 == 0) {
				continue;
			}
			result += i;
		}

		System.out.print(result);
	}

} Main public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int number = sc.nextInt();
		sc.close();

		long result = 0;
		for (int i = 1; i <= number; i++) {
			if (i % 3 == 0 && i % 5 == 0) {
				continue;
			} else if (i % 3 == 0) {
				continue;
			} else if (i % 5 == 0) {
				continue;
			}
			result += i;
		}

		System.out.print(result);
	} main {

		Scanner sc = new Scanner(System.in);
		int number = sc.nextInt();
		sc.close();

		long result = 0;
		for (int i = 1; i <= number; i++) {
			if (i % 3 == 0 && i % 5 == 0) {
				continue;
			} else if (i % 3 == 0) {
				continue;
			} else if (i % 5 == 0) {
				continue;
			}
			result += i;
		}

		System.out.print(result);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int number = sc.nextInt(); number sc.nextInt() sc.nextInt sc sc.close() sc.close sc long result = 0; result 0 for (int i = 1; i <= number; i++) {
			if (i % 3 == 0 && i % 5 == 0) {
				continue;
			} else if (i % 3 == 0) {
				continue;
			} else if (i % 5 == 0) {
				continue;
			}
			result += i;
		} int i = 1; int i = 1; i 1 i <= number i number i++ i++ i {
			if (i % 3 == 0 && i % 5 == 0) {
				continue;
			} else if (i % 3 == 0) {
				continue;
			} else if (i % 5 == 0) {
				continue;
			}
			result += i;
		} {
			if (i % 3 == 0 && i % 5 == 0) {
				continue;
			} else if (i % 3 == 0) {
				continue;
			} else if (i % 5 == 0) {
				continue;
			}
			result += i;
		} if (i % 3 == 0 && i % 5 == 0) {
				continue;
			} else if (i % 3 == 0) {
				continue;
			} else if (i % 5 == 0) {
				continue;
			} 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;
			} i % 3 == 0 i % 3 i 3 0 {
				continue;
			} continue; if (i % 5 == 0) {
				continue;
			} i % 5 == 0 i % 5 i 5 0 {
				continue;
			} continue; result += i result i System.out.print(result) System.out.print System.out System System.out result String[] args args public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int number = sc.nextInt();
		sc.close();

		long result = 0;
		for (int i = 1; i <= number; i++) {
			if (i % 3 == 0 && i % 5 == 0) {
				continue;
			} else if (i % 3 == 0) {
				continue;
			} else if (i % 5 == 0) {
				continue;
			}
			result += i;
		}

		System.out.print(result);
	}

} public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int number = sc.nextInt();
		sc.close();

		long result = 0;
		for (int i = 1; i <= number; i++) {
			if (i % 3 == 0 && i % 5 == 0) {
				continue;
			} else if (i % 3 == 0) {
				continue;
			} else if (i % 5 == 0) {
				continue;
			}
			result += i;
		}

		System.out.print(result);
	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int number = sc.nextInt();
		sc.close();

		long result = 0;
		for (int i = 1; i <= number; i++) {
			if (i % 3 == 0 && i % 5 == 0) {
				continue;
			} else if (i % 3 == 0) {
				continue;
			} else if (i % 5 == 0) {
				continue;
			}
			result += i;
		}

		System.out.print(result);
	}

}
