Hello, Codeforces!
On 23.11.2021 17:35 (Московское время) we will host Codeforces Global Round 17.
It is the fifth round of a 2021 series of Codeforces Global Rounds. The rounds are open and rated for everybody.
The prizes for this round:
- 30 best participants get a t-shirt.
- 20 t-shirts are randomly distributed among those with ranks between 31 and 500, inclusive.
The prizes for the 6-round series in 2021:
- In each round top-100 participants get points according to the table.
- The final result for each participant is equal to the sum of points he gets in the four rounds he placed the highest.
- The best 20 participants over all series get sweatshirts and place certificates.
Thanks to XTX, which in 2021 supported the global rounds initiative!
The problems were written and prepared by AliShahali1382(Ali Shahali), DeadlyCritic(MohammadHossein Paydar), AmShZ(AmirMohammad ShahRezaei), Tet(Soroush Sahraei), Keshi(Alireza Keshavarz), Davoth(Alireza Samimi), alireza_kaviani(Alireza Kaviani).
We would like to thank these people:
- antontrygubO_o, for coordinating and helping a lot to make this round happen.
- our testers for testing providing great feedbacks: gamegame, Kalam, Amoo_Safar, prabowo, dorijanlendvaj, nor, Davoth, ijxjdjd, sohsoh, 16204, wxhtzdy, naman1601, mblazev, fatemetmhr, hiva_, manish.17, Saman., SMahdi, Vjovein.