Welcome all to the next Codeforces Format round!
In this round I will replace Artem Rakhov in his usual role of contest administrator: Artem have set out to America to take part in TopCoder Open Algorithm onsite. Good luck, Artem!
The contest has ended, results.
User a4461497 has won the contest, while among first-division users - kuniavski was the first who solved all 5 problems.