July Challenge 2017
Pishty and tree, Chef and Sign Sequences, IPC Trainers, Calculator , Tree Expectancy, Whats in the Name
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Fill The Matrix, Little Chef and Sums
December Challenge 2017
Chef And Easy Xor Queries, Chef and Hamming Distance of arrays, Penalty Shoot-out, Chef And his Cake, Total Diamonds
July Cook-Off 2017
Chang and Bitwise OR, Chang and the Perfect Function, Chang and Perfect Quadruples, Bipartite Graph from Trees
December Lunchtime 2017
Too Much Sweetness, Days in Month, Strange Function
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
January Cook-Off 2018
Multiple of 3, Make array great again, Survive in ChocoLand
February Challenge 2018
Chef And The Patents, Permutation and Palindrome, Car-pal Tunnel, Points Inside A Polygon, Chef and odd queries, Chef And His Characters, Broken Clock
March Challenge 2018 DIV 1
Pishty and Triangles, Chef and Easy Problem, Chef and Gcd Queries, Mix the Colors, Minions and Voting
June Cook-Off 2018 Division 1
Masha and Minions, Sonya and Segments, Good Permutations
Lithuania