Problems with visitors

It happens nearly daily I just normally delete them before anyone else sees them.

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