February Challenge 2017
Chef and Triangles, Chef and His Apartment Dues, Most Frequent Element, Gerrymander, Eugene and big number
May Challenge 2017
Chef and Sub Array , Chef and his daily routine, Courses in an university, Blocked websites, Median of adjacent maximum numbers, Chef and Subsequences
September Challenge 2017
Fill The Matrix, Little Chef and Sums, Minimum Good Permutation, Sereja and Functions (Challenge), Sereja and Commands, Chef and Pick Digit
July Cook-Off 2017
Chang and Bitwise OR, Chang and the Perfect Function, Chang and Perfect Quadruples
October Cook-Off 2017
Chef and Weird Queries, Chef and Employment Test, Chef and Counting Test
July Lunchtime 2017
Find the Maximum Value, Good Pairs
October Lunchtime 2017
Buggy Calculator, Maximum Number
September Mega Cook-Off 2018 Division 1
OneTwo, Make a Permutation
September Lunchtime 2018 Division 1
Opposite Cites, Chef Restaurant
India