A. Hexagonal PackingBees are very hard working insects and they are also very good at geometry. In order to minimize the...

B. The Game of RocksAlice and Bob have come up with a new game. Bob gives Alice a NxM grid that contains N rows and M co...

C. Rectangle DivisionYou are given a rectangle which is parallel to the coordinate axis. The lower left coordinate is (x,...

D. Chemical Reaction IIThe simulation of chemical reactions are always complex. Professor X has devoted himself to studying...

E. The Multiplayer Action GameHave you played the game Agar.io? According to wikipedia, Agar.io is a massively multiplayer action ...

F. Gaaner KoliThe protagonists of this problem are two great programmers of a certain institution Omanush and Ordi...

G. Gretchen and Strange FunctionGretchen loves experimenting with functions. She came up with an interesting function recently that ...

H. Infinite GameOne day Oditi and her two brothers Sam and Ron were feeling bored as their summer vacation was almos...

I. Flyover in TwinlandRio has become the president of Twinland. Now he wants to develop his country to fulfill his promise...

J. Ghosh vs DattaAbout two hundred years ago, a serious dispute evoked between the two neighboring colonies of Khulna...

K. Primary Key"ClarityLon" is the new awesome ecommerce based startup that went to the top of the char...

L. Rio and InversionOne day Rio was returning home from his university and unfortunately lost his phone on the way. He a...

Practice contests allow you to rerun contests and experience them as close as possible to the original run.
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