I wouldn't say it's safe, but forn≤2×105n≤2×105it's quite unlikely to be hacked. With a bit largernn(like5×1055×105) it's more likely to have quite a bad case. If you're interested,https://codeforces.com/contest/1985/hacks/1049559is one of the cases where I tried really...
Hack: https://codeforces.com/contest/2000/hacks/1069602 3. Visiting in order of node number This also happens a lot because many people use std::pair of each (node,distance)(node,distance) in priority_queue. Because the comparator of std::pair compares first first, by default the node wi...
Day 303 Day 303: Codeforces ACM Nov 10, 2019 Day 304 Day 304: Twitter HR Problems Nov 11, 2019 Day 305 Day 305: BTW Nov 12, 2019 Day 306 Day 306: Euler Abstract Nov 15, 2019 Day 307 Day 307: Back to react Nov 16, 2019 Day 308 Day 308: Web Deb Nov 17, 2019 Day 309 Day...
. And, before you jump in and say something like "b...but hash collisions are a major security issue and would be exploited to hell in realistic contexts", who the hell even goes on Codeforces, a COMPETITVE programming site to practice proper, FUNCTIONAL programming? → Reply AkiLotus ...
so the best way is to AC 1 problem and Hack Failed for many times. If you are sure you can make a code that could Failed System Test at that problem, then do it. If you want to do, you can use some trick to Hack Failed as quickly as possible, but if you are Skipped or repor...
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. I will update it with time, so feel free to write your suggestions/questions in case I missed something and I will be glad to add it to the post...
I summarized why I think Rust is suitable for contests in 2019 onward. Granted, the learning curve is substantial enough that it may not seem that way at first. To make the transition easier, for anyone who's interested, here I'll go over some aspects of my Codeforces submissions in ...
Today I completed my second competition (#333) and an important question regarding time limits arose. I solved theB problemin O(n) time and after locking the problem, I saw that a participant in my room solved it in O(n^2) time. Consequently, I wanted to hack his solution based on...
Well ! Hack Codeforces site ! and change rating = 9999 :P →Reply kvtoraman 13 years ago,#^| 0 right away sir! →Reply _arjun 13 years ago,#| ←Rev.2→-6 see this http://apps.topcoder.com/forums/?module=Thread&threadID=723957&start=0 ...
Here comes the sweep. Radial sweep. For simplicity as we fixed a point as the "center" move it to the orgins along with all the other points. Now sort the points trigonometrically. ( or clockwise if you want ) Put the angles in an array. Now go through the array and count the num...