Rock-paper-scissors

implementation, schedules

Inna and New Matrix of Candies

brute force, implementation, schedules

Complex Market Analysis

binary search, dp, implementation, number theory, schedules, two pointers

Sereja and Brackets

data structures, schedules

New Year Tree Decorations

geometry, schedules, sortings

Tanya is 5!

graph matchings, graphs, greedy, schedules