October Challenge 2017
Max Mex, Counter Test For CHEFSUM, A Balanced Contest, Chef and a great voluntary Program
December Challenge 2017
Chef And his Cake, Penalty Shoot-out, Chef and Hamming Distance of arrays
October Cook-Off 2017
Chef and Employment Test, Chef and Weird Queries, Chef and Counting Test
January Challenge 2018
String Merging, Partition the numbers
March Challenge 2018 DIV 2
Pishty and Triangles, Minion Chef and Bananas, Minions and Voting, Chef and Glove, Mix the Colors, A Big Sale, Chef and Easy Problem
May Cook-off 2018 Division 2
Best Cake Ever, Secret Recipe
May Challenge 2018 Division 2
Mighty Friend, Minimum Deletions, Xor Again, Dibs on Fibs
India