import java.util.Scanner;
class Main{
    public static void main(String args[]){
        Scanner scan = new Scanner(System.in);
        long num = scan.nextInt();
        long sum = 0;
        for(int i =1; i <= num; i++){
            if(i % 3 == 0 && i % 5 == 0){
                //System.out.println("FizzBuzz");
            }else if(i % 3 == 0){
                //System.out.println("Fizz");
            }else if(i % 5 == 0){
                //System.out.println("Buzz");
            }else{
                //System.out.println(i);
                sum = sum + i;
            }
        }
        System.out.println(sum);
    }
} import java.util.Scanner; Scanner java.util class Main{
    public static void main(String args[]){
        Scanner scan = new Scanner(System.in);
        long num = scan.nextInt();
        long sum = 0;
        for(int i =1; i <= num; i++){
            if(i % 3 == 0 && i % 5 == 0){
                //System.out.println("FizzBuzz");
            }else if(i % 3 == 0){
                //System.out.println("Fizz");
            }else if(i % 5 == 0){
                //System.out.println("Buzz");
            }else{
                //System.out.println(i);
                sum = sum + i;
            }
        }
        System.out.println(sum);
    }
} Main public static void main(String args[]){
        Scanner scan = new Scanner(System.in);
        long num = scan.nextInt();
        long sum = 0;
        for(int i =1; i <= num; i++){
            if(i % 3 == 0 && i % 5 == 0){
                //System.out.println("FizzBuzz");
            }else if(i % 3 == 0){
                //System.out.println("Fizz");
            }else if(i % 5 == 0){
                //System.out.println("Buzz");
            }else{
                //System.out.println(i);
                sum = sum + i;
            }
        }
        System.out.println(sum);
    } main {
        Scanner scan = new Scanner(System.in);
        long num = scan.nextInt();
        long sum = 0;
        for(int i =1; i <= num; i++){
            if(i % 3 == 0 && i % 5 == 0){
                //System.out.println("FizzBuzz");
            }else if(i % 3 == 0){
                //System.out.println("Fizz");
            }else if(i % 5 == 0){
                //System.out.println("Buzz");
            }else{
                //System.out.println(i);
                sum = sum + i;
            }
        }
        System.out.println(sum);
    } Scanner scan = new Scanner(System.in); scan new Scanner(System.in) long num = scan.nextInt(); num scan.nextInt() scan.nextInt scan long sum = 0; sum 0 for(int i =1; i <= num; i++){
            if(i % 3 == 0 && i % 5 == 0){
                //System.out.println("FizzBuzz");
            }else if(i % 3 == 0){
                //System.out.println("Fizz");
            }else if(i % 5 == 0){
                //System.out.println("Buzz");
            }else{
                //System.out.println(i);
                sum = sum + i;
            }
        } int i =1; int i =1; i 1 i <= num i num i++ i++ i {
            if(i % 3 == 0 && i % 5 == 0){
                //System.out.println("FizzBuzz");
            }else if(i % 3 == 0){
                //System.out.println("Fizz");
            }else if(i % 5 == 0){
                //System.out.println("Buzz");
            }else{
                //System.out.println(i);
                sum = sum + i;
            }
        } {
            if(i % 3 == 0 && i % 5 == 0){
                //System.out.println("FizzBuzz");
            }else if(i % 3 == 0){
                //System.out.println("Fizz");
            }else if(i % 5 == 0){
                //System.out.println("Buzz");
            }else{
                //System.out.println(i);
                sum = sum + i;
            }
        } if(i % 3 == 0 && i % 5 == 0){
                //System.out.println("FizzBuzz");
            }else if(i % 3 == 0){
                //System.out.println("Fizz");
            }else if(i % 5 == 0){
                //System.out.println("Buzz");
            }else{
                //System.out.println(i);
                sum = sum + i;
            } i % 3 == 0 && i % 5 == 0 i % 3 == 0 i % 3 i 3 0 i % 5 == 0 i % 5 i 5 0 {
                //System.out.println("FizzBuzz");
            } if(i % 3 == 0){
                //System.out.println("Fizz");
            }else if(i % 5 == 0){
                //System.out.println("Buzz");
            }else{
                //System.out.println(i);
                sum = sum + i;
            } i % 3 == 0 i % 3 i 3 0 {
                //System.out.println("Fizz");
            } if(i % 5 == 0){
                //System.out.println("Buzz");
            }else{
                //System.out.println(i);
                sum = sum + i;
            } i % 5 == 0 i % 5 i 5 0 {
                //System.out.println("Buzz");
            } {
                //System.out.println(i);
                sum = sum + i;
            } sum = sum + i sum sum + i sum i System.out.println(sum) System.out.println System.out System System.out sum String args[] args
import java.util.Scanner;
class Main{
    public static void main(String args[]){
        Scanner scan = new Scanner(System.in);
        long num = scan.nextInt();
        long sum = 0;
        for(int i =1; i <= num; i++){
            if(i % 3 == 0 && i % 5 == 0){
                //System.out.println("FizzBuzz");
            }else if(i % 3 == 0){
                //System.out.println("Fizz");
            }else if(i % 5 == 0){
                //System.out.println("Buzz");
            }else{
                //System.out.println(i);
                sum = sum + i;
            }
        }
        System.out.println(sum);
    }
}