August Challenge 2018 Division 2
Modular GCD, Coordinate Compression , Spell Bob, Problem Sort, Sheokand and Number
October Challenge 2018 Division 1
Appy and Balloons , Beautiful Bricks, Minimize Digitsum, Chef and Surprise Chessboard
July Lunchtime 2018 Division 2
Split Stones, Forced Particles, GCD Sum, Prime divisors
August Lunchtime 2018 Division 2
Chef and Problem Setting, X and Two Groups, Mix Mix Game, Chef and Eid
December Lunchtime 2018 Division 2
Print Pattern, Choosing from Buckets, Age Calculator
February Challenge 2019 Division 1
Maximize the Tax, Art of Balance, Chef and Secret Ingredients, Guess It Right, Manhattan Rectangle, Xor Decomposition
March Challenge 2019 Division 1
Cheating on Queue, Yet Again a Subarray Problem
April Challenge 2019 Division 1
Playing with Numbers, Subtree Removal
July Challenge 2019 Division 1
Hit the Coconuts, Guess the Prime!, Codechef War, Circular Merging
August Challenge 2019 Division 1
Guddu and his Mother, Complement Spanning Trees, Chef and Gordon Ramsay, Maximize an Expression, Dilemma, Encoding
October Challenge 2019 Division 1
Even Edges, Bacterial Reproduction, Chef and Maximum Star Value, Array Modification, (Challenge) Maximizing LIS
Taiwan