
import java.math.BigInteger;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        BigInteger sum = BigInteger.ZERO;
        for (int i = 1; i <= N; i++) {
            if (i % 3 != 0 && i % 5 != 0) {
                sum = sum.add(BigInteger.valueOf(i));
            }
        }
        System.out.println(sum);
    }
} import java.math.BigInteger; BigInteger java.math import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        BigInteger sum = BigInteger.ZERO;
        for (int i = 1; i <= N; i++) {
            if (i % 3 != 0 && i % 5 != 0) {
                sum = sum.add(BigInteger.valueOf(i));
            }
        }
        System.out.println(sum);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        BigInteger sum = BigInteger.ZERO;
        for (int i = 1; i <= N; i++) {
            if (i % 3 != 0 && i % 5 != 0) {
                sum = sum.add(BigInteger.valueOf(i));
            }
        }
        System.out.println(sum);
    } main {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        BigInteger sum = BigInteger.ZERO;
        for (int i = 1; i <= N; i++) {
            if (i % 3 != 0 && i % 5 != 0) {
                sum = sum.add(BigInteger.valueOf(i));
            }
        }
        System.out.println(sum);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = Integer.parseInt(sc.next()); N Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc BigInteger sum = BigInteger.ZERO; sum BigInteger.ZERO BigInteger BigInteger.ZERO for (int i = 1; i <= N; i++) {
            if (i % 3 != 0 && i % 5 != 0) {
                sum = sum.add(BigInteger.valueOf(i));
            }
        } int i = 1; int i = 1; i 1 i <= N i N i++ i++ i {
            if (i % 3 != 0 && i % 5 != 0) {
                sum = sum.add(BigInteger.valueOf(i));
            }
        } {
            if (i % 3 != 0 && i % 5 != 0) {
                sum = sum.add(BigInteger.valueOf(i));
            }
        } if (i % 3 != 0 && i % 5 != 0) {
                sum = sum.add(BigInteger.valueOf(i));
            } i % 3 != 0 && i % 5 != 0 i % 3 != 0 i % 3 i 3 0 i % 5 != 0 i % 5 i 5 0 {
                sum = sum.add(BigInteger.valueOf(i));
            } sum = sum.add(BigInteger.valueOf(i)) sum sum.add(BigInteger.valueOf(i)) sum.add sum BigInteger.valueOf(i) BigInteger.valueOf BigInteger 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);
        int N = Integer.parseInt(sc.next());
        BigInteger sum = BigInteger.ZERO;
        for (int i = 1; i <= N; i++) {
            if (i % 3 != 0 && i % 5 != 0) {
                sum = sum.add(BigInteger.valueOf(i));
            }
        }
        System.out.println(sum);
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        BigInteger sum = BigInteger.ZERO;
        for (int i = 1; i <= N; i++) {
            if (i % 3 != 0 && i % 5 != 0) {
                sum = sum.add(BigInteger.valueOf(i));
            }
        }
        System.out.println(sum);
    }
} Main

import java.math.BigInteger;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = Integer.parseInt(sc.next());
        BigInteger sum = BigInteger.ZERO;
        for (int i = 1; i <= N; i++) {
            if (i % 3 != 0 && i % 5 != 0) {
                sum = sum.add(BigInteger.valueOf(i));
            }
        }
        System.out.println(sum);
    }
}