December Challenge 2019 Division 2
Easy Subsequence Selection, That Is My Score!, Addition, Plus Multiply
January Challenge 2020 Division 2
Chef and Dynamo, Doraemon, Equality, Breaking Bricks
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Ready Bitwise, Leaked Answers (Challenge)
March Cook-Off 2020 Division 2
Find Your Gift, Box of Chocolates, Mysterious Sequence
January Lunchtime 2020 Division 2
Bob and His Friends, Chef and Street Food, Under the Tunnels
May Lunchtime 2020 Division 1
Convert the String, Tree difference
July Cook-Off 2020 Division 1
Even-tual Reduction, OR-thodox Distinction
June Cook-Off 2020 Division 1
Per Capita Income, Checkpoints
June Lunchtime 2020 Division 1
Maximum AND, Gold Mining, Square Submatrices
India