玄关求条30pts

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int k;
    cin>>k;
    int cnt=0;
    for(int i=10000;i<=30000;i++)
    {
        int a1,a2,a3;
        a1=k/100;
        a2=k/10%10;
        a3=k%100;
        if(a1%k==0&&a2%k==0&&a3%k==0)
        {
            cout<<i<<endl;
            cnt++;
        }
    }
    if(cnt==0)
    {
        cout<<"No"<<endl;
    }
}