March Challenge 2018 DIV 2
A Big Sale, Chef and Easy Problem, Minion Chef and Bananas, Minions and Voting, Mix the Colors, Chef and Glove
November Cook-Off 2018 Division 1
Beautiful Garland, A-B Game
March Lunchtime 2018 Division 2 (Unrated)
Partitions, Chef and Friends, Three Integers, Magic Elements
April Challenge 2018 Division 2
Weight of Numbers, Workers, Average of Pairs, Count Good Prefixes, Highway Crossing, Cutting Plants, Chef and Array (Challenge)
May Challenge 2018 Division 2
Minimum Deletions, Xor Again, Dibs on Fibs
June Challenge 2018 Division 2
Naive Chef, Sheokand and String, Vision, Binary Shuffle
September Challenge 2018 Division 1
AND Square Subsegments, Table Game, Bad Shuffle
November Challenge 2018 Division 1
Appy Loves One, Good Median, Chef, Primes and Trees (Challenge), Magician versus Chef 2
October Challenge 2018 Division 1
Minimize Digitsum, Chef and Surprise Chessboard, Beautiful Bricks, Appy and Balloons
June Lunchtime 2018 Division 2
Sort the Leaves, Permutation Composition Queries, Summary Power, Counting Pretty Numbers
August Lunchtime 2018 Division 1
Chef and Eid, Mix Mix Game, X and Two Groups
February Challenge 2019 Division 1
Chef and Secret Ingredients, Art of Balance
Indonesia