I see a lot of newcomers struggling to use the website to it's fullest, so I decided to write a blog that has all important information about how to use Codeforces in a single place.

Exactly one type of bread and one type of sausage must be used. It is not allowed to simultaneously include two ingredients that Ernesto believes do not mix well together.

Never use someone else's code, read the tutorials or communicate with other person during a virtual contest. → Practice? Want to solve the contest problems after the official contest ends? Just register …

Jul 7, 2025 · Codeforces. Соревнования и олимпиады по информатике и программированию, сообщество программистов

Rule Restricting the Use of AI [revision 2024-09-14] Codeforces Round 977 (Div. 2, based on COMPFEST 16 - Final Round) Thanks for participating in JUST ACM HALF EXTREME It is …

Never use someone else's code, read the tutorials or communicate with other person during a virtual contest. → Practice? Want to solve the contest problems after the official contest ends? Just register …

Never use someone else's code, read the tutorials or communicate with other person during a virtual contest. → Practice? Want to solve the contest problems after the official contest ends? Just register …

Never use someone else's code, read the tutorials or communicate with other person during a virtual contest. → Practice? Want to solve the contest problems after the official contest ends? Just register …

If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive. Never use someone else's code, read the tutorials or communicate with other person …

Never use someone else's code, read the tutorials or communicate with other person during a virtual contest. → Practice? Want to solve the contest problems after the official contest ends? Just register …