import java.util.Scanner;

public class Main {
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);

        Long inputNum = Long.parseLong(sc.next());
        Long sum = 0L;

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

        System.out.println(sum);
        sc.close();
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);

        Long inputNum = Long.parseLong(sc.next());
        Long sum = 0L;

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

        System.out.println(sum);
        sc.close();
    }
} Main public static void main(String args[]){
        Scanner sc = new Scanner(System.in);

        Long inputNum = Long.parseLong(sc.next());
        Long sum = 0L;

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

        System.out.println(sum);
        sc.close();
    } main {
        Scanner sc = new Scanner(System.in);

        Long inputNum = Long.parseLong(sc.next());
        Long sum = 0L;

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

        System.out.println(sum);
        sc.close();
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) Long inputNum = Long.parseLong(sc.next()); inputNum Long.parseLong(sc.next()) Long.parseLong Long sc.next() sc.next sc Long sum = 0L; sum 0L for(int i = 1; i <= inputNum; i++) {
            if(i % 3 == 0 && i % 5 == 0) {
                continue;
            } else if(i % 3 == 0) {
                continue;
            } else if(i % 5 == 0) {
                continue;
            } else {
                sum += i;
            }
        } int i = 1; int i = 1; i 1 i <= inputNum i inputNum i++ i++ i {
            if(i % 3 == 0 && i % 5 == 0) {
                continue;
            } else if(i % 3 == 0) {
                continue;
            } else if(i % 5 == 0) {
                continue;
            } else {
                sum += i;
            }
        } {
            if(i % 3 == 0 && i % 5 == 0) {
                continue;
            } else if(i % 3 == 0) {
                continue;
            } else if(i % 5 == 0) {
                continue;
            } else {
                sum += i;
            }
        } if(i % 3 == 0 && i % 5 == 0) {
                continue;
            } else if(i % 3 == 0) {
                continue;
            } else if(i % 5 == 0) {
                continue;
            } 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 {
                continue;
            } continue; if(i % 3 == 0) {
                continue;
            } else if(i % 5 == 0) {
                continue;
            } else {
                sum += i;
            } i % 3 == 0 i % 3 i 3 0 {
                continue;
            } continue; if(i % 5 == 0) {
                continue;
            } else {
                sum += i;
            } i % 5 == 0 i % 5 i 5 0 {
                continue;
            } continue; {
                sum += i;
            } sum += i sum i System.out.println(sum) System.out.println System.out System System.out sum sc.close() sc.close sc String args[] args public class Main {
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);

        Long inputNum = Long.parseLong(sc.next());
        Long sum = 0L;

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

        System.out.println(sum);
        sc.close();
    }
} public class Main {
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);

        Long inputNum = Long.parseLong(sc.next());
        Long sum = 0L;

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

        System.out.println(sum);
        sc.close();
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);

        Long inputNum = Long.parseLong(sc.next());
        Long sum = 0L;

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

        System.out.println(sum);
        sc.close();
    }
}