Konstantin Semenov

July Cook-Off 2016: 

Chef and Numbers, Chef and Land, Chef and Array, Chef and Sort, Chef and Proportion

October Mega Cook-Off 2018 Division 2: 

Binary Nim 2, Power Tree, Ada and the Staircase, Pumping Water, Ada Bishop

December Challenge 2018 Division 1: 

Chef and Interactive XOR, Edge Addition, Directing Edges, Max and Electrical Panel, Colorblind Feast

November Lunchtime 2018 Division 1: 

Useful Number, Median, Maximize It, Probability, Beats and Pieces

March Lunchtime 2019 Division 1: 

Corrupted Seven-Segment Display, Tree Flow, Travelling Saleschef, Partition into Permutations

April Challenge 2019 Division 1: 

Moving Rectangles (Challenge), Sonya and Queries, Edgy, Subtree Removal, Mininum XOR over Tree, Playing with Numbers, Offer for Chef, Kira Loves Palindromes

May Cook-Off 2019 Division 1: 

Misha and Nice Sets, Bitsetbaba and Power Grid, Expected Xor, Searching for a Biclique

May Lunchtime 2019 Division 1 (Unrated): 

Grid Tour, Reverse Maximisation

SnackDown 2021 - Online Qualifiers: 

Prefix as a Substring 2, Lucky Number, Maximum Number Of Distinct Elements, Minimise Difference

SnackDown 2021 - Online Round 1A: 

Min Max LCM, Equal Beauty, Dance Moves, Round Robin Ranks , Yet Another Flipping Problem

SnackDown 2021 - Online Pre-Elimination: 

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

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

One Change Subsequences, Random Convex Hull, Graduate Work Matters, Sorting Segments

January Lunchtime 2022 Division 1: 

Circular Permutation Recovery, Permutation XOR Sum, Permutation Deletion

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