May Challenge 2017
Courses in an university, Median of adjacent maximum numbers, Chef and his daily routine
June Challenge 2017
A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets
July Challenge 2017
IPC Trainers, Calculator , Whats in the Name, Tree Expectancy, Chef and Sign Sequences
August Long Challenge 2017
Chef and Rainbow Array, Chef and Mover, Palindromic Game, Greedy Candidates
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Fill The Matrix, Little Chef and Sums
October Challenge 2017
A Balanced Contest, (Challenge) Connecting computers, Counter Test For CHEFSUM, Chef and Cycled Cycles, Chef and a great voluntary Program, Chef and Magic Arrays, Max Mex
August Cook-Off 2017
Real obtuse, From heaven to earth
October Cook-Off 2017
Chef and Employment Test, Chef and Weird Queries
June Lunchtime 2017
Maximum Unique Segment, Two Numbers
January Challenge 2018
Maximum Score, String Merging, Rectangle, K-Concatenation
January Cook-Off 2018
Multiple of 3, Survive in ChocoLand
January Lunchtime 2018
Chef and Game with Sequence, Chef and Escaping from the Labyrinth
February Challenge 2018
Lucas Theorem, Chef And His Characters, Chef And The Patents, Car-pal Tunnel
April Challenge 2019 Division 2
Friend or Girlfriend, Maximum Remaining
