June Challenge 2016
Chef And The Hiring Event, Devu and an Array, Chef and Coins Game, Chef and Array and K, Chef And Binary Operation
July Challenge 2016
Andrash and Stipendium, Chef and Segments, Chef and Tetris, Chef and Robots Competition, Chefland and Electricity
August Challenge 2016
Chef and Chocolate, Chef and Round Run
November Challenge 2016
Task for Alexey, Chef and squares, Gift and Chef, Count Permutations
July Cook-Off 2016
Chef and Proportion, Chef and Numbers
September Cook-Off 2016
Lazy Jem, The Lost Arithmetic Sequences
October Cook-Off 2016
Watson asks Does Permutation Exist, ChefWatson uses Social Network
December Cook-Off 2016
Chef and Subset, Chef and Subarrays
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number, Bandwidth of a matrix
January Cook-Off 2017
Digit Longest Increasing Subsequences 2
August Long Challenge 2017
Chef and Rainbow Array, Chef and Mover, Palindromic Game, Greedy Candidates
October Challenge 2017
Chef and a great voluntary Program, Max Mex, A Balanced Contest
December Challenge 2017
Chef And his Cake, Chef and Hamming Distance of arrays, Penalty Shoot-out, Total Diamonds
September Cook-Off 2017
Infinite OR Game, Statistics Construction, Subsequence Equality
June Lunchtime 2017
Maximum Unique Segment, Two Numbers
IOPC 2017 (Rated)
The Birthday Tears, Game Of Life, Max Out
India