백준 8단계 no.1

import java.util.*;

public class Main {
    static boolean prime(int m) {
        if (m != 1) {
            for (int j = 2; j <= Math.sqrt(m); j++) {
                if (m % j == 0) {
                    return false;
                }
            } return true;
        }
        return false;
    }

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();
        int count = 0;

        for (int i = 0; i < n; i++) {
            int m = sc.nextInt();
            if (prime(m)) {
                count++;
            }
        }

        System.out.println(count);
    }
}