Welcome to codeforces :) hacking is to give a testcase that makes a solution to a participant fail(i.e Wrong Answer,runtime error, time limit exceeded) the owner of the code that you try to hack he do nothing ,if his solution is absolutely correct then no one can hack his code On...
is this really an actual hacking attempt? why it seems fake to me? I may be wrong, correct me if i am. i have many more screenshot of previous contests, which have the similar pattern of hacking. Hack Code:  Hack Test Case: , I saw a“Successful hacking attempt”in the“Hacks”list. But I think this hacking might involve cheating. Look at this hacked submission:204925830. The source code of the def...
Recently in the div 4 contest (Codeforces Round 964 (Div. 4)), I tried to hack some people's problem E solution, and I find some strange things. In problem E, the solution should be like this : 1. for all x from 1 to 2e5, precompute the number of operations needed for x to b...
I've just discovered this question on Quora: What is the story behind your username at CodeForces?. I guess it'd be pretty interesting to hear stories from top participants. For instance, my handle's history is already described there. This blog is dedicated to everyone who don't have ...
so this was what I like about codeforces ... though there might be some points left i would like to know if in the contribution part one can give his/her problems for competitions even if one is not red or orange so that one gets to think of problems outside the domain of the avail...
The first result on google is this https://codeforces.com/blog/entry/6249 → Reply AliArapov221 21 month(s) ago, # | +8 Basically, when people hack another people's submissions, server keeps hacking tests, so they will test them after contest to every submission. It was made ...
Assuming that the system can check104104pairs per second, we will need4500045000seconds, which is just more than half a day, the same length as hacking procedure of Educational Rounds. But I believe that limit is much lower (I have not used it). ...