December Lunchtime 2020 Division 1 (Unrated)
Three Letters, One Zero Swaps, Even Sequence
October Cook-Off 2020 Division 2
Split the Str Ing, Decreasing Srrnmieeda, Path-etic Sums, Yet Another Crossover Episode
November Cook-Off 2020 Division 1
Flip the String, Chef and IPC Certificates
September Lunchtime 2020 Division 2
GCD operations, Root the Tree, Robot Detector, Watermelon
March Cook-Off 2021 Division 2
Guess the Number, Matrix XOR, Consecutive Deletions
February Lunchtime 2021 Division 2
Average Sorting, Palpal Strings, Coprime Range
November Cook-Off 2021 Division 2
Product Pain, Missing Sums, Make it Divisible
January Cook-Off 2022 Division 2
Palindromes Not Allowed, Mean Maximization, Subsegment Divisibility , Merged LIS
January Lunchtime 2022 Division 2
Subarray permutations, Prefix Zeros, Permutation XOR Sum
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