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 JAVA (judge verdict: Wrong Answer)

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
	public static void main(String[] args) {
		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
	    
		String x = "";
		
		boolean[] prime = new boolean[10001];
		for (int i = 2; i < prime.length; i++) {
			prime[i] = true;
		}
		
		for (int i = 2; i < 10001; i++) {
			for (int j = 2; (j * j) < i; j++) {
				if (prime[i] == false) continue;
				if ((i % j) == 0) {
					prime[i] = false;
					break;
				}
			}
		}
		
		try {
			int ans = 0;
			while ((x = in.readLine()) != null) {
				int num = Integer.parseInt(x);
				if (prime[num] == true) ans++;
			}
			System.out.println(ans);
		} catch (NumberFormatException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}