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 Julia (1.4.0) (judge verdict: Accepted)

function main()
	readline()
	cnt=zeros(Int,10^6)
	for a=map(x->parse(Int,x),split(readline()))
		cnt[a]+=1
	end
	ans=0
	for i=1:10^6
		if cnt[i]>0
			if cnt[i]==1
				ans+=1
			end
			for j=i+i:i:10^6
				cnt[j]=0
			end
		end
	end
	println(ans)
end
main()