October Challenge 2013
Helping Lira, Maxim and Dividers, Yet Another Nice Girl, Fibonacci Number, Kamehameha, Little Elephant and Bamboo
May Challenge 2018 Division 2
Xor Again, Dibs on Fibs, Fake Binary Search, Not a Convex Hull (Challenge), Minimum Deletions, Change the Signs, Mighty Friend, S-T Mincut
September Challenge 2018 Division 1
Chef and Lost Story, Bad Shuffle, Table Game, Chef and Adventures, Factorize, Chef and Condition Zero (Challenge), Magician versus Chef, Sasha and Photos, Selinas the Chefs Falling on the Tree, AND Square Subsegments, War of XORs
SnackDown 2021 - Online Qualifiers
Minimise Difference, Maximum Number Of Distinct Elements, Lucky Number, Prefix as a Substring 2
SnackDown 2021 - Online Round 1A
Yet Another Flipping Problem, Round Robin Ranks , Dance Moves, Lazy Machine, Min Max LCM
Starters 154 (Rated till 6 stars)
Tree Cut Xor, GCD and XOR, Triangle Count (Easy)
China