December Challenge 2019 Division 2
That Is My Score!, Plus Multiply
April Challenge 2020 Division 2
Strange Number, Unit GCD, Sell All the Cars, COVID Pandemic and Long Queue
May Challenge 2020 Division 2
Coronavirus Spread, Isolation Centers
SnackDown 2021 - Online Qualifiers
Maximum Number Of Distinct Elements, Lucky Number
SnackDown 2021 - Online Round 1A
Yet Another Flipping Problem, Round Robin Ranks , Dance Moves, Min Max LCM
June Long Two 2022 Division 2 (Unrated)
Gcd and Lcm , Count the ACs, AP Grid, Reversal Sorting, Strong Elements
Indonesia