March Challenge 2016
Sereja and Two Strings 2, Chef And Special Dishes, maximize the sum, Chef And Hungry Birds, Palindromic substrings
April Challenge 2016
Help Watson Escape, Fibonacci Queries, Chef and Ballons, Chef And Magical Path, Chef And Coloring
May Challenge 2016
Chef and Big Soccer, Laddu, Forest Gathering, Chef and Balls
June Challenge 2016
Chef and Rectangle Array, Chef and Array and K, Devu and an Array
November Challenge 2016
Task for Alexey, Chef and squares, Gift and Chef, Friends Meeting, Count Permutations, Urban Development
June Lunchtime 2016
Collisions, One more weird game
January Challenge 2017
Capital Movement, Cats and Dogs, Chef and Circle, Digits Cannot Separate, Reservior, Tourists in Mancunia
January Cook-Off 2017
Digit Longest Increasing Subsequences 2
July Cook-Off 2017
Chang and Bitwise OR, Chang and the Perfect Function, Chang and Perfect Quadruples
September Cook-Off 2017
Infinite OR Game, Statistics Construction, Subsequence Equality
IOPC 2017 (Rated)
The Birthday Tears, Game Of Life, Max Out, Christmas Time
India