import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Long N, sum = 0L;
        Scanner sc = new Scanner(System.in);
        N = sc.nextLong();
        for(int i = 1 ; i <= N ; i++)
        {
            sum += (((i%3 ==0) || (i%5==0))? 0 : i);
        }
        System.out.println(sum);
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Long N, sum = 0L;
        Scanner sc = new Scanner(System.in);
        N = sc.nextLong();
        for(int i = 1 ; i <= N ; i++)
        {
            sum += (((i%3 ==0) || (i%5==0))? 0 : i);
        }
        System.out.println(sum);
    }
} Main public static void main(String[] args) {
        Long N, sum = 0L;
        Scanner sc = new Scanner(System.in);
        N = sc.nextLong();
        for(int i = 1 ; i <= N ; i++)
        {
            sum += (((i%3 ==0) || (i%5==0))? 0 : i);
        }
        System.out.println(sum);
    } main {
        Long N, sum = 0L;
        Scanner sc = new Scanner(System.in);
        N = sc.nextLong();
        for(int i = 1 ; i <= N ; i++)
        {
            sum += (((i%3 ==0) || (i%5==0))? 0 : i);
        }
        System.out.println(sum);
    } Long N N sum = 0L; sum 0L Scanner sc = new Scanner(System.in); sc new Scanner(System.in) N = sc.nextLong() N sc.nextLong() sc.nextLong sc for(int i = 1 ; i <= N ; i++)
        {
            sum += (((i%3 ==0) || (i%5==0))? 0 : i);
        } int i = 1 ; int i = 1 ; i 1 i <= N i N i++ i++ i {
            sum += (((i%3 ==0) || (i%5==0))? 0 : i);
        } {
            sum += (((i%3 ==0) || (i%5==0))? 0 : i);
        } sum += (((i%3 ==0) || (i%5==0))? 0 : i) sum (((i%3 ==0) || (i%5==0))? 0 : i) ((i%3 ==0) || (i%5==0)) (i%3 ==0) i%3 i 3 0 (i%5==0) i%5 i 5 0 0 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) {
        Long N, sum = 0L;
        Scanner sc = new Scanner(System.in);
        N = sc.nextLong();
        for(int i = 1 ; i <= N ; i++)
        {
            sum += (((i%3 ==0) || (i%5==0))? 0 : i);
        }
        System.out.println(sum);
    }
} public class Main {
    public static void main(String[] args) {
        Long N, sum = 0L;
        Scanner sc = new Scanner(System.in);
        N = sc.nextLong();
        for(int i = 1 ; i <= N ; i++)
        {
            sum += (((i%3 ==0) || (i%5==0))? 0 : i);
        }
        System.out.println(sum);
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Long N, sum = 0L;
        Scanner sc = new Scanner(System.in);
        N = sc.nextLong();
        for(int i = 1 ; i <= N ; i++)
        {
            sum += (((i%3 ==0) || (i%5==0))? 0 : i);
        }
        System.out.println(sum);
    }
}
