Kanstantsin Sokal

July 2011 Long Contest

Large Kitchen, Most Popular Friend

July Cook-off 2011

Misinterpretation, Garden Squares

October Long Contest 2011

Dish Distribution, The Great Plain

December Cook-Off

Ciel and A-B Problem

January 2012 Challenge

Houses and Restaurants, Lucky Sum

June Challenge 2012

Polynomial Partition Function, Little Elephant and Product, Little Elephant and Candies, Doom Bakes Cakes, Arranging Cup-cakes

June Cook-Off 2012

Closing the Tweets, Connecting Soldiers

July Challenge 2012

Chef's Dream, My Fair Coins, The Gray-Similar Code, Little Elephant and Bubble Sort, Gift Rift, Restaurant Rating, Addition chains

August Challenge 2012

Little Elephant and Bombs, Lucky Driving, Range of Data, Delivery Boy

September Challenge 2012

Kisses & Hugs, Racing Horses, Queries About Numbers, ChefTown Parade, Three is Crowd

October Cook-Off 2012

Buying Sweets, Equalization, Tennis Tournament

December Challenge 2012

Sereja and Data Structures , Granama Recipes, Arigeom Beats, Book Exercises, Magic Rankings, Different Trips, The Uncountable Ways, Pizza Delivery

December Cook-Off 2012

Root of the Problem, Packaging Cupcakes, Reversing directions

February 2013 Challenge

Little Elephant and Cards, Buy1-Get1, Magic Board, Triangular Queries, Climbing Stairs, Vacation, Word Play, Efficient Painting

February Cook-Off 2013

Lack of Logic, Row and Column Operations, Hotel Balifornia 2

April Challenge 2013

Little Elephant and Music, Barcelona Gameplay Tactics, ChefGame, Kingdom Unity, Fault Tolerance, Maximum Weight Difference, Levy Conjecture, Cylinder

April Cook-Off 2013

Andrew and the Birthday, Andrew and the Meatballs, Andrew and the Strings, Andrew and the Meatballs again

August Challenge 2013

Little Elephant and Lemonade, Music & Lyrics, Hello Hello, Save The Princess, The Number Of Solutions, Chef and Segments, Sereja and Ballons, Deleting numbers, Prime Distance On Tree, Splitting Candies

August Cook-Off 2013

Chef and The Right Triangles, Chef and The Divisibility Queries

September Cook-Off 2013

Strange Matrix, Code

October Challenge 2013

Little Elephant and Bamboo, Helping Lira, Maxim and Dividers, Sereja and Transformation, CAO Stage-3, Yet Another Nice Girl, Edit Distance on Grid, Kamehameha

December Cook-off 2013

Chef and Substrings, Chef Goes Through Segments, Chef and Girlfriend, Chef and Combinatorics

July Cook-Off 2014

Copy-Paste, Present for Andrii, Sum Queries, Friends

December Cook-Off 2014

Servers, Jam, Matrix Again, Player, Good Joke!

February Challenge 2014

Little Elephant and Movies, Draughts, Make Him Happy, Chef and Favourite Sequence, Graph Challenge, Longest Common Pattern, Little Elephant and Subarrays, Colored Array, Make It Zero 2

April Challenge 2014

Final Battle of Chef, Sereja and Permutation, Counting Matrices, Farmer Feb, Cards, bags and coins, Chef and Digits, Divide the Tangerine, Shortest Path in Binary Trees

May Challenge 2014

Little Elephant and Balloons, Sereja and Game, Compilers and Parsers, Dynamic Trees and Queries, Chef-jumping, Fun with AGp, Sereja and Subsegment Increasings, Chef and Strange Matrix, Stone

June Challenge 2014

Little Elephant and Blocks, Maxim and Progressions, Chef and Functions, Chef and Digit Jumps, DARTS501, Chef and Subarray, Sereja and Arcs, Two Companies, Guessing Game, Forgot Password

September Challenge 2014

Factorisation, Sereja and Bubble Sort, Chef and Rainbow Array - 2, Chef and Swaps, Chef and Left-Right, Chef and sequence, Rectangle Query, Fun with Rotation, Flooring

November Challenge 2014

Chef and Segment Game, Chef and Words, Fombinatorial, Sereja and Order, Sereja and Permutations, Distinct Characters Subsequence, Chef and Red Black Tree, Let us construct palindrome, Chef and Churu

January Challenge 2015

Queries on the String, Sereja and Number Division 2, Chef and A Large Permutation, Sereja and LCM, Chef and Stones, Sereja and Votes, One Dimensional Kingdoms, Xor Queries, Ranka, Gcd Queries

September Challenge 2015

Filling the maze, Nikitosh and xor, Cracking the Code

November Challenge 2015

Nikitosh and Sauron-tetrahedron, Ingredients, Receipt Recovery, Chef and collection of stamps, Eugene and function, Simple Sum, Chef and cakes, Period on tree

June Cook-Off 2016

Sticks, Right Triangle, Cutting Cake, Chef Land, Range Minimum Queries

August Cook-Off 2016

Tweedle-Dee and Tweedle-Dum , Math Hatter, Mock Turtle

March Cook-Off 2017

Rainbow Graph, Yet Another Card Game, Increasing Xor Sequence, Safe Robot

June Cook-Off 2017

Ada and crayons, SnackUp

Problems Authored (44)

Problems Tested (9)

Editorials Contributed (17)