June Challenge 2017
Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets, A Good Set
April Challenge 2018 Division 2
Weight of Numbers, Workers
November Challenge 2018 Division 2
Chef and Ridges, Appy Loves One, Chef and Difficult Contests, Chef and Happiness
May Cook-Off 2019 Division 2
Chain Reaction, Searching for a Biclique, Recover the Sequence, Expected Xor, Misha and Nice Sets
August Challenge 2020 Division 1
Subsequence Frequency Counting, Smallest KMP, Chef and Wedding Arrangements
September Challenge 2020 Division 1
Chefina and Swap, Chef and Trump Cards, Find XOR, Ada Matrix
Bangladesh