import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        long N = sc.nextInt();
        long i = 1;
        long sum = 0;

        while(i <= N){
            if(((i % 3) == 0) && ((i % 5) == 0)){
            }
            else if(i % 5 == 0){
            }
            else if(i % 3 == 0){

            }else{
                //System.out.println(i);
                sum += i;
                
            }
            i++;
        }
        System.out.println(sum);
    }
} import java.util.*; util.* java public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        long N = sc.nextInt();
        long i = 1;
        long sum = 0;

        while(i <= N){
            if(((i % 3) == 0) && ((i % 5) == 0)){
            }
            else if(i % 5 == 0){
            }
            else if(i % 3 == 0){

            }else{
                //System.out.println(i);
                sum += i;
                
            }
            i++;
        }
        System.out.println(sum);
    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        long N = sc.nextInt();
        long i = 1;
        long sum = 0;

        while(i <= N){
            if(((i % 3) == 0) && ((i % 5) == 0)){
            }
            else if(i % 5 == 0){
            }
            else if(i % 3 == 0){

            }else{
                //System.out.println(i);
                sum += i;
                
            }
            i++;
        }
        System.out.println(sum);
    } main {
        Scanner sc = new Scanner(System.in);
        long N = sc.nextInt();
        long i = 1;
        long sum = 0;

        while(i <= N){
            if(((i % 3) == 0) && ((i % 5) == 0)){
            }
            else if(i % 5 == 0){
            }
            else if(i % 3 == 0){

            }else{
                //System.out.println(i);
                sum += i;
                
            }
            i++;
        }
        System.out.println(sum);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) long N = sc.nextInt(); N sc.nextInt() sc.nextInt sc long i = 1; i 1 long sum = 0; sum 0 while(i <= N){
            if(((i % 3) == 0) && ((i % 5) == 0)){
            }
            else if(i % 5 == 0){
            }
            else if(i % 3 == 0){

            }else{
                //System.out.println(i);
                sum += i;
                
            }
            i++;
        } i <= N i N {
            if(((i % 3) == 0) && ((i % 5) == 0)){
            }
            else if(i % 5 == 0){
            }
            else if(i % 3 == 0){

            }else{
                //System.out.println(i);
                sum += i;
                
            }
            i++;
        } if(((i % 3) == 0) && ((i % 5) == 0)){
            }
            else if(i % 5 == 0){
            }
            else if(i % 3 == 0){

            }else{
                //System.out.println(i);
                sum += i;
                
            } ((i % 3) == 0) && ((i % 5) == 0) ((i % 3) == 0) (i % 3) i 3 0 ((i % 5) == 0) (i % 5) i 5 0 {
            } if(i % 5 == 0){
            }
            else if(i % 3 == 0){

            }else{
                //System.out.println(i);
                sum += i;
                
            } i % 5 == 0 i % 5 i 5 0 {
            } if(i % 3 == 0){

            }else{
                //System.out.println(i);
                sum += i;
                
            } i % 3 == 0 i % 3 i 3 0 {

            } {
                //System.out.println(i);
                sum += i;
                
            } sum += i sum i i++ i System.out.println(sum) System.out.println System.out System System.out sum String[] args args public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        long N = sc.nextInt();
        long i = 1;
        long sum = 0;

        while(i <= N){
            if(((i % 3) == 0) && ((i % 5) == 0)){
            }
            else if(i % 5 == 0){
            }
            else if(i % 3 == 0){

            }else{
                //System.out.println(i);
                sum += i;
                
            }
            i++;
        }
        System.out.println(sum);
    }
} public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        long N = sc.nextInt();
        long i = 1;
        long sum = 0;

        while(i <= N){
            if(((i % 3) == 0) && ((i % 5) == 0)){
            }
            else if(i % 5 == 0){
            }
            else if(i % 3 == 0){

            }else{
                //System.out.println(i);
                sum += i;
                
            }
            i++;
        }
        System.out.println(sum);
    }
} Main
import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        long N = sc.nextInt();
        long i = 1;
        long sum = 0;

        while(i <= N){
            if(((i % 3) == 0) && ((i % 5) == 0)){
            }
            else if(i % 5 == 0){
            }
            else if(i % 3 == 0){

            }else{
                //System.out.println(i);
                sum += i;
                
            }
            i++;
        }
        System.out.println(sum);
    }
}