Problem:
Score : 200 points

Problem Statement

Let us define the FizzBuzz sequence a_1,a_2,... as follows:

If both 3 and 5 divides i, a_i=\mbox{FizzBuzz}.

If the above does not hold but 3 divides i, a_i=\mbox{Fizz}.

If none of the above holds but 5 divides i, a_i=\mbox{Buzz}.

If none of the above holds, a_i=i.

Find the sum of all numbers among the first N terms of the FizzBuzz sequence.

Constraints

1 \leq N \leq 10^6

Input

Input is given from Standard Input in the following format:

N

Output

Print the sum of all numbers among the first N terms of the FizzBuzz sequence.

Sample Input 1

15

Sample Output 1

60

The first 15 terms of the FizzBuzz sequence are:

1,2,\mbox{Fizz},4,\mbox{Buzz},\mbox{Fizz},7,8,\mbox{Fizz},\mbox{Buzz},11,\mbox{Fizz},13,14,\mbox{FizzBuzz}

Among them, numbers are 1,2,4,7,8,11,13,14, and the sum of them is 60.

Sample Input 2

1000000

Sample Output 2

266666333332

Watch out for overflow.

Solution in Scala (2.13.1) (judge verdict: Wrong Answer)

import java.util.Scanner

object Main {
  def main(args:Array[String]) = {
    val sc = new java.util.Scanner(System.in)
    val a = sc.nextInt //最初の整数が読み込まれる
    
    var b = 0
    
    (1 to a).foreach{j =>
      j match{
      	case j if j%15 == 0 => b = b
        case j if j%3 == 0 => b = b
        case j if j%5 == 0 => b = b
        case _ => b = b + j
      }
    }
     println(b)
  }
}