import java.util.Scanner;
public class Main {
    static Scanner sc = new Scanner(System.in);
 
    public static void main(String[] args) {
        long N = sc.nextLong();
        long sum = 0;
        for (long i = 1; i <= N; i++) {
            if(i%15 != 0 && i%3 != 0 && i%5 !=0){
              sum += i;
            }
        }
        System.out.println(sum);
      }
} import java.util.Scanner; Scanner java.util public class Main {
    static Scanner sc = new Scanner(System.in);
 
    public static void main(String[] args) {
        long N = sc.nextLong();
        long sum = 0;
        for (long i = 1; i <= N; i++) {
            if(i%15 != 0 && i%3 != 0 && i%5 !=0){
              sum += i;
            }
        }
        System.out.println(sum);
      }
} Main static Scanner sc = new Scanner(System.in); sc new Scanner(System.in) public static void main(String[] args) {
        long N = sc.nextLong();
        long sum = 0;
        for (long i = 1; i <= N; i++) {
            if(i%15 != 0 && i%3 != 0 && i%5 !=0){
              sum += i;
            }
        }
        System.out.println(sum);
      } main {
        long N = sc.nextLong();
        long sum = 0;
        for (long i = 1; i <= N; i++) {
            if(i%15 != 0 && i%3 != 0 && i%5 !=0){
              sum += i;
            }
        }
        System.out.println(sum);
      } long N = sc.nextLong(); N sc.nextLong() sc.nextLong sc long sum = 0; sum 0 for (long i = 1; i <= N; i++) {
            if(i%15 != 0 && i%3 != 0 && i%5 !=0){
              sum += i;
            }
        } long i = 1; long i = 1; i 1 i <= N i N i++ i++ i {
            if(i%15 != 0 && i%3 != 0 && i%5 !=0){
              sum += i;
            }
        } {
            if(i%15 != 0 && i%3 != 0 && i%5 !=0){
              sum += i;
            }
        } if(i%15 != 0 && i%3 != 0 && i%5 !=0){
              sum += i;
            } i%15 != 0 && i%3 != 0 && i%5 !=0 i%15 != 0 && i%3 != 0 && i%5 !=0 i%15 != 0 i%15 i 15 0 i%3 != 0 i%3 i 3 0 i%5 !=0 i%5 i 5 0 {
              sum += i;
            } sum += i sum i System.out.println(sum) System.out.println System.out System System.out sum String[] args args public class Main {
    static Scanner sc = new Scanner(System.in);
 
    public static void main(String[] args) {
        long N = sc.nextLong();
        long sum = 0;
        for (long i = 1; i <= N; i++) {
            if(i%15 != 0 && i%3 != 0 && i%5 !=0){
              sum += i;
            }
        }
        System.out.println(sum);
      }
} public class Main {
    static Scanner sc = new Scanner(System.in);
 
    public static void main(String[] args) {
        long N = sc.nextLong();
        long sum = 0;
        for (long i = 1; i <= N; i++) {
            if(i%15 != 0 && i%3 != 0 && i%5 !=0){
              sum += i;
            }
        }
        System.out.println(sum);
      }
} Main
import java.util.Scanner;
public class Main {
    static Scanner sc = new Scanner(System.in);
 
    public static void main(String[] args) {
        long N = sc.nextLong();
        long sum = 0;
        for (long i = 1; i <= N; i++) {
            if(i%15 != 0 && i%3 != 0 && i%5 !=0){
              sum += i;
            }
        }
        System.out.println(sum);
      }
}