Problems with visitors

Thank you.

User lyjg0115 is spamming in forum "other programming languages".

thanks!

Another one. User cdef043 has posted many spams in the same forum.

thanks!

I think Mr.HASSAN01 is drunk or something. He has posted ads in the 'Problem Set Archive' and in the 'JAVA Based Languages' section.

I've deleted his (spam) posts. Thanks.

Well, another one named ARCLINKS has posted spam ads in C/C++, functional programming and off-topic sections.

we look carefully into it, thanks!

Is this bot (zyzy4455) could be "destroyed" ?

This one was worse than normal. Most spam you never see because I am on here a lot and they normally make one or two posts. Unfortunately this one made 100 posts. I don't have the capability to delete more than 1 at a time.

I have appealed to the admins for assistance.

It flooded my gmail inbox too ( notifications for new posts in threads in which i had responded ). Admin should have privilege to mark a user as spammer and automatically delete all his forum posts.

I can ban them, just not batch delete.

I subscribe to the entire forum. I got all 100 emails...

Would this be considered spam?
http://www.spoj.com/forum/viewtopic.php?f=29&t=10226&sid=bf9f53158ee5ed5cf707c135d986a0f9#p3267226

Yup. There was a time where I would see about 20-30 of those posted a night.

Co do testów, to ponieważ zadanie pochodzi z OI, możesz swój program sprawdzić na main.edu.pl: http://main.edu.pl/pl/archive/oi/15/pla6
Tam, dowiesz się więcej o tym, dlaczego Twój program niektórych testów nie przechodzi (masz poprawny, ale zbyt wolny algorytm).
A na przyszłość, przeczytaj sobie pkt. 15 regulaminu forum: http://pl.spoj.pl/forum/viewtopic.php?f=1&t=12148

when ever i submit my solution(in JAVA SE 6) it shows following error

2
/bin/bash: line 5: mkdir: command not found
/bin/bash: line 6: META-INF/MANIFEST.MF: No such file or directory
/bin/bash: line 7: META-INF/MANIFEST.MF: No such file or directory
/bin/bash: line 8: META-INF/MANIFEST.MF: No such file or directory
zip warning: name not matched: META-INF

zip error: Nothing to do! (try: zip -r tested.zip . -i META-INF)

can anyone tell me please!!

PFACT : Prime Factors https://www.spoj.com/problems/PFACT/1
I got tle in java while submitting this code , plz suggest me any optimization
My code is

class Main
{
public static void main (String[] args) throws java.lang.Exception
{

  int[] arr=new int[100001];
   
        for(int i=1;i<100001;i++)
        {    
          arr[i]=-1;         
        }
        
        
        for(int i=2;i<100001;i++)
        {    
                    if(arr[i]==-1)
                    {
                        for(int j=i;j<100001;j+=i)
                        {    
                            if(arr[j]==-1) 
                            arr[j]=i;                                               }
                    } 
        }
         for(int n=2;n<100001;n++)
        {   int N=n ;
            System.out.print(n+":");
                while(n!=1){
                    System.out.print(arr[n]+" ");
                    n=n/arr[n];
                } 
                System.out.println();
                n=N;
        }

}
}

Hi I am Hemant Purswani from India and I want to host a hackathon for my college, which website can use to do so