Where can I solve and submit IOI problems ?

How to improve constructive algorithms ?

How to improve my debugging skill ?

Hello Codeforces!

How can I improve my math skills for CP?

My math skills are not very good at CP and I want to improve my math skills, but I don't know what kind of math is needed for CP.

Thank you!

The Antarctica team selection ended today, the top 4 are:

Xinran Li (ForeverFire),

Tran Xuan Bach (thenymphsofdelphi),

Nguyen Viet Dung(magnified) and

Toan Le (ToanLe).

They will participate in IOI2021. Good luck!

I am sure that many a CF member has been annoyed by my (deliberately) irritating comments (especially my trademark "LoOooOoOLoOOooOoLoOOoOoOOooOooOOLoOooOOoOOoOOL. ROFL. LMAO." phrase). I got so many downvotes that I am actually surprised that I did not win the most irritating CF user here.

Actually I created this account, as a social experiment, to make truthful (but not necessarily hurtful) comments with the end goal of helping others. You may be thinking "what the **** are you talking about? You help people by insulting/irritating them?". Well, whatever you may think, I didn't intentionally want to hurt anyone's feelings in any way.

So what is the point of this blog? I wish to solemnly apologize to the (countless) people whom I have offended with my sarcastic comments/messages. I hereby swear that I shall no longer post any sarcastic/offensive content on CF till I breathe my last breath. My sole aim from now on is to enjoy solving the problems in CF and help others in a gentle way.

Once again, to the people whom I have offended, I offer my sincere apologies. You may downvote this blog to show your hate towards me. I will graciously accept your opinions of me.

Sincerely, i_will_be_less_than_zero

p.s. In case you were wondering, no, my account was not hacked. My conscience tells me that I should not be spewing sarcasm/insults at others anymore.