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>
#define N 10000

int main()
{

  int number[N],i,j,a,n=0,yakusuu;

  scanf("%d",&a);

  for(i = 0;i < a;i++)
  {
    scanf("%d",&number[i]);
  }

  for(i = 0;i < a;i++)
  {
    yakusuu = 0;

    for(j = 1;j <= number[i];j++)
    {
      if(number[i] % j == 0)yakusuu++;
    }
    if(yakusuu == 2)n++;
  }

  printf("%d\n",n);


  return 0;

}