c++ 求赞

#include<iostream>
using namespace std;
int main()
{
	int k,s=0;
	cin>>k;
	for (int i=10000;i<=30001;i++)
	{
		int a=i/10/10;
		int b=i/10%1000;
		int c=i%1000;
		if (a%k==0 and b%k==0 and c%k==0)
		{
			cout<<i<<endl;
			s++;
		}
	}
	if (s==0)
	{
		cout<<"No";
	}
	return 0;
}