如果你80分

#include<bits/stdc++.h>
using namespace std;
int k,i,ans,s1,s2,s3;
int main(){
cin >>k;
for(i=10000;i<=30000;i++){
        s1=i/100;
        s2=i%10000/10;
        s3=i%1000;
        if((s1%k==0)&&(s2%k==0)&&(s3%k==0)){
        cout <<i<<endl;
        ans=1;
        }
    }
if(ans!=1){
cout <<'No';   
}
return 0;  
}