June Challenge 2015
Chef and Memory Limit, Steady tables, Chef and Polygons
September Challenge 2015
Chain of Doughnuts, Count Steps in Matrix
October Challenge 2015
Count Subarrays, Who dares to be a millionaire
June Challenge 2016
Chef And The Hiring Event, Chef and Rectangle Array, Chef and Array and K, Chef And Binary Operation, Chef and Coins Game, Chef and cities, Devu and an Array
June Challenge 2017
Pairwise union of sets, Triplets, Xenny and Coin Rankings, A Good Set, Chef and Prime Queries, Chef and the Feast
July Lunchtime 2022 Division 2 (Rated)
Easy Pronunciation, Yet Another Palindrome Making Problem, Consecutive XOR, Maximum Median Matching, Largest Family
Starters 124 Division 2 (Rated)
Table Strength, Make It One, Swap and Unite, Binary Parity
Starters 127 Division 2
Superincreasing, Anti-Triangle
Starters 128 Division 2 (Rated)
Binary Substring, XOR And Multiply, MEXimize the Array, Disjoint Non-Decreasing Array
Cuba