March Challenge 2017
Bear and Extra Number, Xenny and Alternating Tasks, Bandwidth of a matrix
April Challenge 2017
Dish Of Life, Bear and Row 01, Similar Dishes
May Challenge 2017
Chef and Sub Array , Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers, Chef and Subsequences
June Challenge 2017
Triplets, Pairwise union of sets, Xenny and Coin Rankings, Chef and the Feast, A Good Set
August Long Challenge 2017
Chef and Rainbow Array, Palindromic Game, Greedy Candidates
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
December Challenge 2017
Chef and Hamming Distance of arrays, Chef And his Cake, Total Diamonds, Penalty Shoot-out
October Cook-Off 2017
Chef and Counting Test, Chef and Employment Test, Chef and Weird Queries
March Challenge 2018 DIV 2
Chef and Easy Problem, A Big Sale, Mix the Colors, Chef and Glove, Minions and Voting, Minion Chef and Bananas
March Cook-off 2018 Division 1
Chef Goes to the Cinema, Chef Restores a Matrix
April Lunchtime 2018 Division 1
The hardest gcd problem, Fast forward travelling
April Challenge 2018 Division 1
Cutting Plants, Highway Crossing, Count Good Prefixes
May Cook-Off 2019 Division 1
Misha and Nice Sets, Expected Xor, Searching for a Biclique
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