import java.io.BufferedReader;
import java.io.*;
import java.util.*;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Collections;
public class Main {
	public static void main(final String[] args){
    
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    long sum = 0;
    
    for(int i = 1 ; i < n + 1 ; i++){
        if(i % 3== 0 && i % 5 == 0){

        }else if(i % 3 == 0){

        }else if(i % 5 == 0){

        }else{
            sum += i;
        }
    
    }
    
    System.out.println(sum);
}
} import java.io.BufferedReader; BufferedReader java.io import java.io.*; io.* java import java.util.*; util.* java import java.util.ArrayList; ArrayList java.util import java.util.Iterator; Iterator java.util import java.util.List; List java.util import java.util.Collections; Collections java.util public class Main {
	public static void main(final String[] args){
    
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    long sum = 0;
    
    for(int i = 1 ; i < n + 1 ; i++){
        if(i % 3== 0 && i % 5 == 0){

        }else if(i % 3 == 0){

        }else if(i % 5 == 0){

        }else{
            sum += i;
        }
    
    }
    
    System.out.println(sum);
}
} Main public static void main(final String[] args){
    
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    long sum = 0;
    
    for(int i = 1 ; i < n + 1 ; i++){
        if(i % 3== 0 && i % 5 == 0){

        }else if(i % 3 == 0){

        }else if(i % 5 == 0){

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

        }else if(i % 3 == 0){

        }else if(i % 5 == 0){

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

        }else if(i % 3 == 0){

        }else if(i % 5 == 0){

        }else{
            sum += i;
        }
    
    } int i = 1 ; int i = 1 ; i 1 i < n + 1 i n + 1 n 1 i++ i++ i {
        if(i % 3== 0 && i % 5 == 0){

        }else if(i % 3 == 0){

        }else if(i % 5 == 0){

        }else{
            sum += i;
        }
    
    } {
        if(i % 3== 0 && i % 5 == 0){

        }else if(i % 3 == 0){

        }else if(i % 5 == 0){

        }else{
            sum += i;
        }
    
    } if(i % 3== 0 && i % 5 == 0){

        }else if(i % 3 == 0){

        }else if(i % 5 == 0){

        }else{
            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 % 3 == 0){

        }else if(i % 5 == 0){

        }else{
            sum += i;
        } i % 3 == 0 i % 3 i 3 0 {

        } if(i % 5 == 0){

        }else{
            sum += i;
        } 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 final String[] args args public class Main {
	public static void main(final String[] args){
    
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    long sum = 0;
    
    for(int i = 1 ; i < n + 1 ; i++){
        if(i % 3== 0 && i % 5 == 0){

        }else if(i % 3 == 0){

        }else if(i % 5 == 0){

        }else{
            sum += i;
        }
    
    }
    
    System.out.println(sum);
}
} public class Main {
	public static void main(final String[] args){
    
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    long sum = 0;
    
    for(int i = 1 ; i < n + 1 ; i++){
        if(i % 3== 0 && i % 5 == 0){

        }else if(i % 3 == 0){

        }else if(i % 5 == 0){

        }else{
            sum += i;
        }
    
    }
    
    System.out.println(sum);
}
} Main
import java.io.BufferedReader;
import java.io.*;
import java.util.*;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Collections;
public class Main {
	public static void main(final String[] args){
    
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    long sum = 0;
    
    for(int i = 1 ; i < n + 1 ; i++){
        if(i % 3== 0 && i % 5 == 0){

        }else if(i % 3 == 0){

        }else if(i % 5 == 0){

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