June Challenge 2017
Xenny and Coin Rankings, A Good Set
June Challenge 2019 Division 2
Road Signs, Chef and Proxy, Lent Money, Guddu on a Date, Chef and Ingredients, Sum and GCD
April Challenge 2020 Division 2
Unit GCD, COVID Pandemic and Long Queue, Leaked Answers (Challenge), Sell All the Cars, Factor Tree, Ready Bitwise, Squared Subsequences, Strange Number
May Challenge 2020 Division 1
Triple Sort, Sorting Vases, Chef and Bitwise Product, (Challenge) Nanobots
July Challenge 2020 Division 1
LCM Constraints, Chefina and Swaps, Chef and Dragon Dens, Missing a Point, Doctor Chef
Philippines