risujiroh

Practice: 

Coronavirus, Pairs of Pairs, Permutation Split, Few Different Elements, Intersection Matrix, Odd Sum Partition, Interactive MST, Maximal GCD, Guess the row, One Change Subsequences, Bracket Removal, Powers of 2, AND Palindromes, Interesting Swap

February Lunchtime 2020 Division 2: 

Painter Problem, At the Gates, Swapping to Palindrome, Not All Flavours, Monsters Battle, Secret Mission

July Challenge 2020 Division 2: 

Ada King, Chefina and Swaps, Chef and Dragon Dens, Missing a Point, Doctor Chef, Chef and Card Game, Chef and Strings

July Lunchtime 2020 Division 1: 

Profitable Paths 2, Golomb Sequence, Coloured Pairings, Binary Concatenation , Pairs of Pairs

December Cook-Off 2020 Division 1 : 

Mysterious Sequence, Self-Destructing Strings, Sed Passwords, Circle of Chaos, Carry All Fruits

January Cook-Off 2021 Division 1 : 

Mex Subsequence, Not Too Colourful, Prefix And, Common Ancestors

December Lunchtime 2020 Division 1 (Unrated): 

K-Tuple Tree, Three Letters, One Zero Swaps

Coders' Legacy (Rated for all): 

Chef vs Doof, Doof on Cartesian, Doof fires Brackets, Jeremy gets a gift

September Lunchtime 2020 Division 1: 

Root the Tree, Robot Detector

UWCOI 2021 (Rated for all): 

Organisation, City Mapping 2, Array Swaps, Efficient Delivery, Hidden Numbers, Binary Puzzle

April Cook-Off 2021 Division 1: 

Tree Distances, OR of ANDs, Valet Parking, Deletion Sort

April Lunchtime 2021 Division 1: 

A Special Tree, Magical Coins

May Lunchtime 2021 Division 1: 

Tokens On A Tree, Similar Arrays, Total Components, K-Subarrays

June Cook-Off 2021 Division 1: 

Binary String on Steroids, Battle Royale, Polynomial Root

June Lunchtime 2021 Division 1: 

From Rational to Binary, HTML Tags, Richie Rich, Hidden Cell, Node Marking, Tic Tac Toe

July Cook-Off 2021 Division 1: 

Beautiful Subsequence, Mod Equality, Hidden Colored Graph, Make the Matrix Beautiful

August Cook-Off 2021 Division 1: 

Odd Array, Different String, Maximum Tree Jumps, Chef 2 Chef, Interactive Equivalency, Clear the Array, Construct a String

August Lunchtime 2021 Division 1: 

Bunny Hops, Min-Max Path, Just a Graph, Longest Spanning Substrings, Chef and Deque

SnackDown 2021 - Online Qualifiers: 

Lucky Number

September Lunchtime 2021 Division 1: 

Range Array, Interesting Representation, Subsequence LCS, Alice vs Bob Faceoff

October Cook-Off 2021 Division 1: 

Can You Reach The End, Find the Modulus, Chef Up, Permutation Sorting Game

SnackDown 2021 - Online Round 1A: 

Round Robin Ranks , Dance Moves, Min Max LCM

SnackDown 2021 - Online Round 1B: 

Queens Placement , Largest Laddu, Help Nishant

SnackDown 2021 - Online Pre-Elimination: 

Non-Decreasing Subsequence of size K, Good ranking, Product Pain, Guests like slippers, Mega mu - 1

SnackDown 2021 - Online Elimination Round (Rated for all): 

Random Convex Hull, Graduate Work Matters, Sorting Segments, Sorter Prodigy

November Lunchtime 2021 Division 1: 

Min-Max Rotations, Permutation Pairs, Subarray Jumps

SnackDown 2021 - Final Round: 

Ones Guessing, Finally, Non Ad-Hoc Problem, AND of Maximums

December Cook-Off 2021 Division 1: 

Binary String Game, Destructive Nim, RGB Construction, Break the Balance

December Lunchtime 2021 Division 1: 

In-tree-active Node Coloring, Optimal Sorting, Romantic Reversals, Sleep Technique , Point constraints

January Lunchtime 2022 Division 1: 

Circular Permutation Recovery, Permutation XOR Sum

February Cook-Off 2022 Division 1: 

Xor Becoming Uncanny, Perfect Permutation, PerMEXuation , Mango Market, Slingshot

February Lunchtime 2022 Division 1: 

Permutation Xor, Chef Cooks Permutation, Visit Them All, Magical Modulo, Magnet Sort

March Cook-Off 2022 Division 1: 

Secret Tree, Dragonado And XOR, Flippable Points, Oh I Dont Care, Alternating Divisibility

March Lunchtime 2022 Division 1: 

Subsequence, Mathology, Sussy Rooks, Winter, Adjacency Love, Separate Them All

April Lunchtime 2022 Division 1(Rated): 

Modular Circular Permutations, Do Not Touch the MEX!!!, Secret Machine Mania

May Cook-Off 2022 Division 1 (Rated): 

Split Powers Of 2, Different Subarrays Rearrange, Triple Inversions

May Lunchtime 2022 Division 1 (Rated): 

Balanced 0-1 Tree, Equal After And, Rearrange Ranges

June Lunchtime 2022 Division 1 (Rated): 

The Lost Array, Max Shift After XOR, XOR Times 2 Is Sum, Minimum Xor On Segment, XOR, The Detective, SPLIT With XOR Not X, Increase to Zero

July Lunchtime 2022 Division 1 (Rated): 

Tree Interval Queries, Tree Retrieval, Binary String Happiness, Consecutive XOR, Largest Family

February Cook-Off 2023 Division 1 (Rated): 

Take Not Less, Alice Potter and OWL, Alice Potter And Dumbledore Army

Starters 100 Division 1 (Rated): 

Prime Permutation, Stamps 100, Concussive Sequence, Ant

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