I came across these successful Hacking attempts... Strangely it seems as if they were submitted in order to get hacked...

If you go through their code you'll find skeptical if conditions like for problem A, for a particular value of x and y output -1 (which is an invalid answer).

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Though this is an educational round but I've seen kangaroo_salesman and superman2020 getting hacked frequently in previous Div2.

Please point out if I am missing something... asking because all this felt quite absurd.

I tried running Hightail as mentioned here...

1) I downloaded the .jar file

2) As I had JDK installed I simply opened .jar file with Java(TM) Platform SE binary

First time a welcome message showed up saying "This config file couldn't be loaded( probably because this is first run ). A new config file will be created and you'll be taken to the settings"

On clicking "OK" the following error message showed up — "The configuration file could not be created. Make sure that Hightail has write rights to its directory"

Hightail version — Hightail-v0.9.7 OS — windows 10

I tried making some changes into properties but all in vain. I'd really appreciate any help to get this up and running.