1978번 '소수 찾기'

import Foundation
 
func isPrime(value: Int) -> Bool{
    if(value == 1){
        return false
    }
    var count = 0
    for i in 1...Int(sqrt(Double(value))){
        if(value % i == 0){
            count += 1
        }
    }
    if(count == 1){
        return true
    }
    else{
        return false
    }
}
var count = 0
_ = readLine()
let input = readLine()?.split(separator: " ").map { Int($0)! }
for i in input!{
    if(isPrime(value: i)){
        count += 1
    }
}
print(count)