September Challenge 2019 Division 2
Chef Designed a Network, Chef and Good Subsequences
November Challenge 2019 Division 2
Physical Exercise, Smallest Beautiful Number, A Simple Game, Weapon Value
November Cook-Off 2019 Division 2
The Biggest Restaurant, Chef Diet, Robots in Chefland
December Challenge 2019 Division 2
Chefina and Ranges, Sticky Notes
January Challenge 2020 Division 2
Equality, Chefina and Prefix Suffix Sums
March Challenge 2020 Division 1
Lasers Everywhere Alternative, Lasers Everywhere
January Cook-Off 2020 Division 2
Chef Chick, Exam Cheating, Range AND
May Lunchtime 2020 Division 1
Convert the String, Tree difference
RECode 12.0 (Rated for all)
Chef and String, Chef and Walk, Chef and Rotation, Chef and Subsequences, Chef and Numbers
December Challenge 2020 Division 1
Hail XOR, Even Pair Sum, Positive Prefixes, Calculus, Square Root of LCA Convolution, String Operations
November Cook-Off 2020 Division 2
Flip the String, Chef and IPC Certificates, Hiring Workers
February Challenge 2021 Division 1
Cut the Cake (Challenge), XOR Sums, Multiple Games, Prime Game, Another Tree with Number Theory, Team Name
February Lunchtime 2021 Division 1
Average Sorting, Sed Max, Independent Set
January Cook-Off 2022 Division 1
Subsegment Divisibility , Merged LIS, Erase All But One
January Lunchtime 2022 Division 1
Circular Permutation Recovery, Permutation XOR Sum
February Lunchtime 2022 Division 1
Visit Them All, Magnet Sort
