December Cook-Off 2021 Division 3
Binary String Game, Two Rooks, Friends Meetup, Musical Chairs, RGB Construction, Median Minimization
December Lunchtime 2021 Division 2
In-tree-active Node Coloring, Maximum Trio, Optimal Sorting, Romantic Reversals
April Lunchtime 2022 Division 2(Rated)
Modular Circular Permutations, Secret Machine Mania, Do Not Touch the MEX!!!, Pair Pain, Buckets Full of Candies
Starters 86 Division 1 (Rated for All)
Least Size, Minimum Operation, String Game , Largest Y
Starters 87 Division 1 (Rated till 6 Stars)
AB plus C, One or All, Inversions of subsequences, Count the Permutations (always), OR-XOR, Checkpoint
Starters 83 Division 1 (Rated)
Construct String, Order by XOR, Rotate to Minimum
Starters 115 Division 1 (Rated)
Delete The Array, Subtraction Sequence I, Subtraction Sequence II, Greedy LIS Algorithm, Binary Grid Forces, Make All Zero
Starters 144 Division 1 (Rated)
Counting Is Fun, Largest K, Minimise Inversions, Find P, Sort Lexicographically
Starters 173 (Rated upto < 2700)
Cool Subsequences, Postman and LLM, Modular Minimization, Introverts, Cool Checker, Time Penalty, Overwrite
Japan