Hello Codeforces!
I am glad to invite you to Codeforces Round 630 (Div. 2), which will take place on 31.03.2020 16:35 (Московское время) (please note for the unusual starting time) and will be rated for all Division 2 participants.
All tasks in this round were prepared by me. Hope that you will enjoy those tasks!
I would like to thank:
awoo for great coordination of this round, and the idea of solution of one task!
Nanako, Nezzar for useful discussion and testing of those tasks!
antontrygubO_o, McDic, vovuh, TBeumsJryi, socho, Oak_limy, Stresshoover, I1I1I11I1I1, defolaut, hx073269 and Pavlova for testing those rounds and invaluable suggestions!
MikeMirzayanov for great systems Codeforces and Polygon!
To avoid queueforces, we will provide small amount but strong (hope so) pretests for first tasks. Hope it works!
The number of tasks and tasks and point distribution will be announced later.
Good luck and have fun!
