March 2012 Challenge
Home Delivery, Spoon in Matrix, Free Shuttle Service
May Challenge 2012
A Home for Chef, Remember the recipe, Divisible Pairs, Lucky lucky number, Jewels and Stones, Little Elephant and Median, Killing Gs, Digits Forest
October Cook-Off 2012
Buying Sweets, Equalization, Tennis Tournament
August Cook-Off 2014
Tree Game, Permutation Shuffle
September Challenge 2014
Fun with Rotation, Flooring, Chef and sequence, Chef and Swaps, Chef and Rainbow Array - 2, Sereja and Bubble Sort, Chef and Left-Right
March Challenge 2016
Sereja and Two Strings 2, Palindromic substrings, Floor Distribution, maximize the sum, Parity tree, Chef And Special Dishes, Tiptoe through the tulips
September Lunchtime 2020 Division 1
Root the Tree, Robot Detector, Permutation Split
May Cook-Off 2022 Division 1 (Rated)
Different Subarrays Rearrange
September Lunchtime 2022 Division 1 (Rated) (Based on EJOI)
Increasing Addition, Remove Numbers, Adjacent Pairs, Longest Unfriendly Subsequence
Starters 115 Division 1 (Rated)
Delete The Array, Subtraction Sequence I, Greedy LIS Algorithm, Binary Grid Forces, Make All Zero
