Problem:
Prime Numbers

A prime number is a natural number which has exactly two distinct natural number divisors: 1 and itself. For example, the first four prime numbers are: 2, 3, 5 and 7.

Write a program which reads a list of N integers and prints the number of prime numbers in the list.

Input

The first line contains an integer N, the number of elements in the list.

N numbers are given in the following lines.

Output

Print the number of prime numbers in the given list.

Constraints

1 ≤ N ≤ 10000

2 ≤ an element of the list ≤ 108

Sample Input 1

5
2
3
4
5
6

Sample Output 1

3

Sample Input 2

11
7
8
9
10
11
12
13
14
15
16
17

Sample Output 2

4

Solution in C (judge verdict: Time Limit Exceeded)

#include<stdio.h>
int main(){
    int N,i,j,num=0,r=1;
	scanf("%d",&N);
	int A[N];
	for(i=0;i<N;i++){
		scanf("%d",&A[i]);
	}
	/*prime number check*/
	for(i=0;i<N;i++){
		for(j=2;j<A[i];j++){
			r=(A[i]%j);
			if(r==0)break;
		}
		if(r==0)continue;
		if(r!=0)num++;
	}
	printf("%d\n",num);
    return 0;
}