Hey there!

This is the third part of my little summing-up of the ending year. This one is pretty big. I went through all submissions from every contest from this year and created the list of the most hacked problems in this year. Moreover, this list has some other informations like what was the problem with the biggest or the lowest number of accepts to it, what problems had strong and weak pretests and many more...

Check the full list here.

Be careful with some data, because you may not remember the Black Day of Codeforces, when some data was lost and in fact, it appears that there were no participants (and submits) for some round (it apply to most of the contests in February). Also, you may surprised that some hacks are count several times — it is because some people resubmitted their hacked solutions (without success) and I wondered where put such submission. I decided to keep it there (frankly, there were not so many such submissions so it doesn't change a lot).

The previous parts:

• best hackers by sum of points,
• most accurate hackers.