March Challenge 2017
Bear and Extra Number, Xenny and Alternating Tasks
April Challenge 2017
Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes
May Challenge 2017
Chef and Sub Array , Chef and his daily routine, Courses in an university, Blocked websites, Median of adjacent maximum numbers, Chef and Subsequences
June Challenge 2017
Triplets, Xenny and Coin Rankings, Chef and the Feast, A Good Set
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
December Challenge 2017
Total Diamonds, Chef And his Cake, Penalty Shoot-out, Chef and Hamming Distance of arrays
March Challenge 2018 DIV 2
Chef and Easy Problem, Minion Chef and Bananas, Minions and Voting, Chef and Glove, A Big Sale, Pishty and Triangles, Mix the Colors
April Challenge 2018 Division 1
Cutting Plants, Highway Crossing, Count Good Prefixes
March Cook-Off 2019 Division 2
XOR N-bonacci Sequence, UEFA Champions League, Markers and Caps, Music Shopping
May Lunchtime 2019 Division 1 (Unrated)
Grid Tour, Abdullah and Toll Discounts, Reverse Maximisation
August Challenge 2019 Division 1
Guddu and his Mother, Encoding, Dilemma
October Challenge 2019 Division 1
Even Edges, Chef and Maximum Star Value, Array Modification
Exun Programming Prelims 2019 (Rated for all)
Weird Modulo Problem , Tennis Tournament, Chipped Tree
Bangladesh