谁帮我康康为什么最后一个点过不去，秋梨膏

import java.util.Scanner;

/**
 * @Author-- Skipper
 */
public class Main {
    public static void main(String[] args) {
        boolean flag = false;
        Scanner sca = new Scanner(System.in);
        int n = sca.nextInt();
        for (int i = 2; i <= n - 4; i++) {
            if (!isPrime(i))
                continue;
            for (int j = i; j <= n - 4; j++) {
                if (!isPrime(j) || !isPrime(n - j - i)) {
                    continue;
                }
                System.out.println(i + " " + j + " " + (n - i - j));
                flag = true;
                break;

            }
            if (flag)
                break;
        }
    }

    private static boolean isPrime(int num) {
        for (int i = 2; i < Math.sqrt(num); i++)
            if (num % i == 0)
                return false;
        return true;
    }
}