September Challenge 2017
Chef and Pick Digit, Sereja and Commands, Little Chef and Sums, Fill The Matrix, Weasel does Xor on Tree, Sum of Cubes, Minimum Good Permutation
December Challenge 2017
Chef and Universe, Total Diamonds, Chef And his Cake, Chef, Leonardo And Queries, Chef And Easy Xor Queries, Penalty Shoot-out, Red and blue points, Chef and Hamming Distance of arrays
July Cook-Off 2017
Bipartite Graph from Trees, Chang and Perfect Quadruples, Chang and Bitwise OR, Chang and the Perfect Function
July Lunchtime 2017
Find the Maximum Value, Good Pairs, Divide the Set
November Lunchtime 2017
Strange Queries, L-R queries, Shuffling, Smart Strategy
December Lunchtime 2017
Days in Month, Strange Function, Too Much Sweetness, Four Friends
January Cook-Off 2018
Multiple of 3, Make array great again, Finding the matrix, Survive in ChocoLand
