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)

// 2018/06/17
// Prime Numbers
#include <stdio.h>

int primeNumber(int);

int main(){
    int n, i, A[10000], count=0;
    
    scanf("%d", &n);
    for(i=0; i < n; i++){
        scanf("%d", &A[i]);
        if(primeNumber(A[i]) == 1)count++;
    }
    printf("%d\n", count);
    
    return 0;
}

int primeNumber(int x){
    int i;
    //if(x == 0 || x == 1)return 0;
    for(i=2; i < x; i++){
        if(x % i == 0)break;
    }
    if(i == x)return 1;
    else return 0;
}