poj1142_poj是什么意思

import java.util.Scanner;

public class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		while(n != 0){
			get(n);
			n=sc.nextInt();
		}
		sc.close();
	}

	private static void get(int n) {
		while(true){
			n++;
			if(!isPrim(n)){
				if(isSmithNumber(n)){
					System.out.println(n);
					break;
				}
			}
		}
	}

	private static boolean isSmithNumber(int n) {
		int k=n;
		int sum = 0;
		int total = 0;
		while(k/10 != 0){
			sum += k % 10;
			k = k / 10;
		}
		sum += k;
		for(int i =2; i <= (int)Math.sqrt(n);){
			if(n % i == 0){
				n=n / i;
				total += getSum(i);
			}
			else
				i++;
		}
		total += getSum(n);
		if(sum == total)
			return true;
		return false;
	}

	private static int getSum(int i) {
		int sum = 0;
		int k=i;
		while(k / 10 != 0){
			sum += k % 10;
			k = k / 10;
		}
		sum += k;
		return sum;
	}

	private static boolean isPrim(int n) {
		int m = (int) Math.sqrt(n);
		if(n == 2)
			return true;
		if(n%2 == 0)
			return false;
		for(int i = 3; i <= m; i = i + 2){
			if(n % i == 0)
				return false;
		}
		return true;
	}
	
}