Hi! As you can see in my profile, I am still newbie from last year.

"No competition — no progress"

I am inviting you to one challenge! Let's see how much we grow to the end of the year! I will consider all of you who writes in comments as a participants. The winner is who gets more rating from the beginning of the year. I will work very hard, and wish you a good luck.

Thank you for paying attention!

Hi. I am kinda new to codeforces. And I talked with someone. That person said something bad to me. How can I report him or his message?? thanks

Hello everyone! I am learning c++. I want/need to learn themes like dp, theory graph..., and from one source i learned that they are all in Data Structures and Algorithms. Could you help me, where can i download right book from good sources? Or book name? Thank you)

I am the manager of one group. How can I write a message to the group, so that, every member of it could read?

How can I find problems with their id number(i. e. i want to find problem 1B)?