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(void){
  int n,i,b;
  int a[10000]={};
  int t=0;
  scanf("%d",&n);

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

  for(i=0;i<n;i++){
    if(1 == so(a[i]))
      t++;
    }
     
  printf("%d\n",t);
  }

int so(int num){
  int j;
  int time=0;

    for(j=2;j<num;j++){
      if(0==num%j){
      time++;
    }
    }
    if(time==0){
      return 1;
  }

  return 0;
}