Problem:
Score : 400 points

Problem Statement

Given is a number sequence A of length N.

Find the number of integers i \left(1 \leq i \leq N\right) with the following property:

For every integer j \left(1 \leq j \leq N\right) such that i \neq j , A_j does not divide A_i.

Constraints

All values in input are integers.

1 \leq N \leq 2 \times 10^5

1 \leq A_i \leq 10^6

Input

Input is given from Standard Input in the following format:

N
A_1 A_2 \cdots A_N

Output

Print the answer.

Sample Input 1

5
24 11 8 3 16

Sample Output 1

3

The integers with the property are 2, 3, and 4.

Sample Input 2

4
5 5 5 5

Sample Output 2

0

Note that there can be multiple equal numbers.

Sample Input 3

10
33 18 45 28 8 19 89 86 2 4

Sample Output 3

5

Solution in Scala (2.13.1) (judge verdict: Runtime Error)

import scala.io.StdIn._

object Main extends App {
  private val MAX = 2 * 100000

  val n = readInt
  val a = readLine.split(" ").map(_.toInt)

  val v = Array.fill(MAX + 5)(0)

  a.foreach { ai =>
    Range.inclusive(1, MAX / ai).foreach { t =>
      v(ai * t) = v(ai * t) + 1
    }
  }

  val ans = a.count { ai => v(ai) == 1 }
  println(ans)
}