#include<iostream>
using namespace std;
int a, b, c,k;
bool ans;
int sub1(int n)
{
   return n/ 100;
}
int sub2(int n)
{
   return n % 10000 / 10;
}
int sub3(int n)
{
   return n % 1000;
}
int main()
{
   cin >> k;
   for (int i = 10000; i < 30000; i++)
   {
   	
   	if (sub1(i)%k==0&&sub2(i)%k==0&&sub3(i)%k==0)
   	{
   		cout << sub1(i) / 100*10000 + sub2(i)*10 + sub3(i) % 10<<endl;
   		ans = 1;
   	}
   }
   if (30000%k==0)
   {
   	cout << 30000;
   }
   if (ans==0)
   {
   	cout << "No";
   }
   return 0;
}

第九个WA，为啥呀？