I observed from a long time that in every contest there are some guys who add special cases to their solution to hack them after the contest which I think is not a good spirit. Like here this is a solution link of today's contest where he add some cases to get runtime error on the question A which is not good. They just use these things to increase their points by hacking them so please sir MikeMirzayanov take some actions against the id's like that.

Thank you.