December Lunchtime 2017
Strange Function, Days in Month, Too Much Sweetness
January Lunchtime 2018
Chef and Game with Sequence, Chef and Escaping from the Labyrinth
May Challenge 2018 Division 1
S-T Mincut, Change the Signs, Fake Binary Search, Dibs on Fibs
June Challenge 2018 Division 1
Vision, Archi and Tree, Ways to Work, Two Flowers
August Challenge 2018 Division 1
Coordinate Compression , Modular GCD, Interactive Matrix, Lonely Cycles
December Lunchtime 2018 Division 1
Age Calculator, Drawing Lines, Choosing from Buckets
January Challenge 2019 Division 1
Yet Another Problem About Sequences, Different Neighbours, Partition the Graph, Distinct Pairs, A Pizza Slice
February Lunchtime 2019 Division 1
Roll the Bar, The Tricky Deal, Chef Challenge
February Lunchtime 2020 Division 1
Swapping to Palindrome, Secret Mission, Monsters Battle
April Lunchtime 2020 Division 1
Dot Time, Xor Jar Muluk Tar, Triangle Query, Positive Mex
May Lunchtime 2020 Division 1
Absolute Min Max, Convert the String
Japan