```

include[HTML_REMOVED]

using namespace std;
int main()
{
long long int n;
cin>>n;
long long int t = n/1000;
int hh,mm,ss;
hh = (t/(60*60))%24;
mm = (t/60)%60;
ss = t%60;
if(hh>=10)cout<[HTML_REMOVED]=10)cout<[HTML_REMOVED]=10)cout<<ss;
else cout<<0<<ss;

}
···