Kiyan Sergey
- sokian
Russia- Other
- No Active Plan. View Details
Activity Heat Map
Learning Paths (1)
Practice Paths (0)
None
Contests (93)
May Challenge 2012
Jewels and Stones, Lucky lucky number, Remember the recipe
July Challenge 2012
My Fair Coins, Gift Rift
September Challenge 2012
Racing Horses
February 2013 Challenge
Little Elephant and Cards, Buy1-Get1, Climbing Stairs
February Cook-Off 2013
Lack of Logic, Row and Column Operations
March Challenge 2013
Tourist Translations, Approximately, Fire Escape Routes
April Challenge 2013
Little Elephant and Music, Barcelona Gameplay Tactics, ChefGame, Kingdom Unity, Maximum Weight Difference, Levy Conjecture
May Challenge 2013
Matchsticks, Witua and Math, Name Reduction, Your Name is Mine, Field Trip
August Challenge 2013
Little Elephant and Lemonade, Hello Hello, Save The Princess, The Number Of Solutions, Chef and Segments, Splitting Candies
August Cook-Off 2013
Chef and The Right Triangles, Chef and The Divisibility Queries
September Challenge 2013
Little Elephant and Exams, Cool Guys, Chef and Integers , Project Spoon, CAO Stage-1, CAO Stage-2
September Cook-Off 2013
Strange Matrix, Game, Code
October Challenge 2013
Little Elephant and Bamboo, Helping Lira, Maxim and Dividers, Sereja and Transformation, CAO Stage-3, Yet Another Nice Girl, Fibonacci Number, Kamehameha
November Challenge 2013
Superpowers of 2, Yet Another Cute Girl, Uncle Johny, Square Digit Squares, Missing some chairs
December Challenge 2013
Lucy and the Flowers, Cube Cakes, Chef and Codes, Petya and Sequence, Funny Marbles, Magic Pairs, Reign, Rectangular Queries
December Cook-off 2013
Chef Goes Through Segments, Chef and Girlfriend
January Challenge 2014
Magic Trick, Sereja and Graph, Bon Appetit, Please like me, Chef and Feedback
March Cook-Off 2014
Game of Divisors, ABC-Strings, Dividing Stamps
April Cook-Off 2014
Snape and Ladder, BiCo Gaming Grid, Travelling Chef Problem
August Cook-Off 2014
Tree Game, Permutation Shuffle, Shooting
February Challenge 2014
Draughts, Make Him Happy, Chef and Favourite Sequence, Longest Common Pattern, Little Elephant and Subarrays, Colored Array
March Challenge 2014
Team Split, Binary Tournament, Walk, Maximum number, GCD condition, Little Chef and Numbers, Mike and Stamps, A Story with Strings, Chef and Graph Queries
April Challenge 2014
Final Battle of Chef, Sereja and Permutation, Counting Matrices, Farmer Feb, Cards, bags and coins, Chef and Digits, Divide the Tangerine, Chef and Tree Game, 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, The Malaysian Flight Search, 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
July Challenge 2014
Little Elephant and Painting, Garden Game, Chef and Frogs, Count Substrings, Reach The Point, Dish Owner, Lucky Game
August Challenge 2014
Mountain Holidays 2, Little Elephant and T-Shirts, Chef and Reversing, The Leaking Robot, Earthquake, Cleaning Tables, Chef and Gift
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
October Challenge 2014
Remy paints the fence, Sereja and two strings, Chef and Ground, Chef and Painting, Chef and Square, Children Trips, Stringology is Magic, Magical Girl and Colored Liquid Potions, DevuLand, Dinosaurs and Laddus
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
December Challenge 2014
Chef Under Pressure, Alok-nath and His Sanskars, Chef and Bracket-Pairs, XOR with Subset, Chef and Apple Trees, Sereja and GCD
June Lunchtime 2014
The Smallest Pair
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
January Lunchtime 2015
Piece of cake, Candidate walk, Just multiply, Many bananas
February Challenge 2015
Chef and Chain, Time to Study Graphs with Chef, Chef and Strange Formula, Chef and Strings, Let us play with rank list, Chef and Equality, Devu and Locks
March Challenge 2015
Count Substrings, Chef and Notebooks, Chef and Problems, Sereja and Random Array, Random Number Generator, Devu and his Class, Sign Wave, Matrix
April Challenge 2015
Count Sequences, Chef and Array, Chef and Interview, Broken Telephone, Inversion sorting, Division of Lands, Chef and Piano Scales, Little Party, Black-white Board Game, Devus and their voting system
May Challenge 2015
Devu and his three Hands, Devu and binary String, Chef and Prime Divisors, Set Difference , Chef and new recipe, Chef and Cake
June Challenge 2015
Sereja and Matrix Division, Steady tables, Chef and His Friend, Chef and Memory Limit, Chef and Polygons, Another Fibonacci, Anticommutative implication, Chef and String, Chefbook, Connect Points
July Challenge 2015
Addition and Multiplication, Sereja and Game 2, Bread, MasterChef, Na2a and lucky stone, Chef and Cube, Rohith and Circles
August Challenge 2015
Way Out, Gravity Guy, Devu And Churu , Cooking Machine, Aditi and Magic Trick, Chef and insomnia, Chef and Path
September Challenge 2015
Filling the maze, 3D Queries, Chain of Doughnuts, Nikitosh and xor, Count Steps in Matrix, Terrible vectors, Bank robbery, Lighthouses, Cracking the Code, Chef and Chetris
October Challenge 2015
Time measure, Count Subarrays, Who dares to be a millionaire, Spheres, Cyclic shifts in permutation, Rupsa and Equilateral Triangle
November Challenge 2015
Eugene and function, Simple Sum, Chef and cakes
December Challenge 2015
Sereja and Dividing, Chef and cinema, Chef and the stones, Plane Division, Oracle Devu and Longest Common Subsequence, Chef and Filters, Chef and Girls
October Cook-Off 2015
Word Stem, Almost Sorted Permutation
November Cook-Off 2015
Sereja and Line, Sereja and Array and Subtracting, Sereja and Pairs
December Cook-Off 2015
Chef and Subarrays, Chef and Queries
April Lunchtime 2015
House Cleaning, Tickets
January Long Challenge 2016
Sereja and Salesman, Chef and Inflation, Rupsa and the Game, Churu and Balls, Asteroids, Cyclist Race, Dai Ma Chu Shi, Chef and Time Machine, Devu and Perfume
February Challenge 2016
Sereja and Two Lines, Chef and Strange Operations, Devu and a light discussion, Rectangles of Love, Chef-Detective, Matrix Maximum Sum, Call Center Schedule
March Challenge 2016
Sereja and Two Strings 2, Chef And Hungry Birds, Palindromic substrings, Floor Distribution, maximize the sum, Chef And Special Dishes
April Challenge 2016
Amazing Experiment, Mario and Luigi, Help Watson Escape, Fibonacci Queries, Chef and Ballons, Devu and good strings, Chef And Magical Path, Chef And Coloring
May Challenge 2016
Sereja and GCD 2, Chef and math, Chef and Balls, Forest Gathering, Chef and Big Soccer, Laddu
June Challenge 2016
Chef And The Hiring Event, Chef and Rectangle Array, Chef and Array and K, Chef And Binary Operation, Chef and Coins Game, Chef and cities, Devu and an Array
July Challenge 2016
Andrash and Stipendium, Chef and Segments, Chef and Tetris, Chef and special numbers, Evaluate the polynomial, Chef and Robots Competition, Chefland and Electricity, Chef and Polyhedron, Defend the Recipe, Scheduling jobs on a cluster
August Challenge 2016
Chef and His Garden, Chef and Circle Run, Chef and Chocolate, Chef and Round Run, Funny gnomes, Maximum Grid
September Challenge 2016
Chef and Friends, Dividing Machine, Chef and Matrix Division, Chef and digits of a number, Faded Palindromes, JosephLand, Chef and calculation
October Challenge 2016
Chef and Keyboard, Big Queries, Fenwick Iterations, Chef and Three Dogs, Power Sums, Chef and Two String
November Challenge 2016
Count Permutations, Friends Meeting, Urban Development, Gift and Chef, Kirito in Memeland, Chef and squares, Chef and Bike, Sereja and Ways in the Cube, Task for Alexey
December Challenge 2016
Train Partner, Kth Max Subarray, Kirito in labyrinth, Our Base is Under Attack
February Cook-Off 2016
Puppy and Catchers, Puppy and Board, Puppy and Sum
April Cook-Off 2016
Movie Weekend, Odd Divisors, Queries on a Binary Tree, Bit Twister on a Tree
February Lunchtime 2016
Chef and Socks, Chef and Tic-Tac-Toe
September Lunchtime 2016
Chef and Inequality, Chef and Tree
January Challenge 2017
Capital Movement, Cats and Dogs
February Challenge 2017
Chef and Yoda, Eugene and big number, Primitive Queries, Interval Game, Sereja and Inversions, Rebel rescue, Chef and Triangles, Chef and his Best Friend, Chef and His Apartment Dues, Most Frequent Element, Gerrymander, Alice and her garden
March Challenge 2017
Cooking Schedule, Completing favorite game, Xenny and Alternating Tasks, Pishty and birthday, Bear and Extra Number, Bandwidth of a matrix
January Cook-Off 2017
Digit Longest Increasing Subsequences, Matrix Transformation, Digit Longest Increasing Subsequences 2
January Lunchtime 2017
Sealing up, Nothing in Common, Improve the Permutation, Segment Queries
April Challenge 2017
Chef and Digits, Bear and Random Grid, Chef and Divisor Tree, Stable market, Heavy-Light Decomposition, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes
May Challenge 2017
Chef and Sub Array , Long Sandwich , Gotham PD, Chef and his daily routine, Courses in an university, Blocked websites, Median of adjacent maximum numbers, Chef and Subsequences
October Challenge 2017
Chef and Magic Arrays, Chef and a great voluntary Program, Max Mex, Counter Test For CHEFSUM, A Balanced Contest
May Lunchtime 2017
Prefix Inversions
January Challenge 2018
Killing Monsters, A humongous Query, Simplify the Square Root, K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
February Challenge 2018
Broken Clock, Chef And His Characters, Chef And The Patents, Car-pal Tunnel, Permutation and Palindrome
March Challenge 2018 DIV 1
Pishty and Triangles, Chef and Easy Problem, Chef and Gcd Queries, Mix the Colors, Minions and Voting
September Challenge 2018 Division 1
AND Square Subsegments, Selinas the Chefs Falling on the Tree, Sasha and Photos, Magician versus Chef, Chef and Lost Story, War of XORs, Chef and Condition Zero (Challenge), Factorize, Chef and Adventures, Table Game, Bad Shuffle
December Challenge 2018 Division 1
Max and Electrical Panel, Directing Edges, Chef and Interactive XOR
November Challenge 2018 Division 1
Appy Loves One, Good Median, Magician versus Chef 2
October Challenge 2018 Division 1
Walk on Tree, Appy and Balloons , Beautiful Bricks, Minimize Digitsum, Chef and Surprise Chessboard, (Challenge) Chef and Takonemo, Coprime Components, Distinct Rows in Submatrices
Moscow Workshops Juniors 2019 (Rated for all)
Subtract Leading Digit, Cutting Pizza, Antimatching
January Challenge 2019 Division 1
Yet Another Problem About Sequences, Different Neighbours, Partition the Graph, Distinct Pairs, Party, A Pizza Slice
April Challenge 2019 Division 1
Offer for Chef, Kira Loves Palindromes, Mininum XOR over Tree, Playing with Numbers, Subtree Removal, Edgy
May Challenge 2019 Division 1
Ada Rooks 2, Where to Build the Roads
June Challenge 2019 Division 1
Lent Money, Chef and Ingredients, Chef and His Dish, Intersecting Paths, Sum and GCD
February Challenge 2020 Division 1
Chef and Railway Stations, No Change Required, Long Contest and Cook Off Overlaps
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Perfect Power Divisors, Ready Bitwise, Factor Tree, Leaked Answers (Challenge)
May Challenge 2020 Division 1
Buying a New String, Triple Sort, Binary Land, Sorting Vases, Not a Real World Problem, Chef and Bitwise Product, Precise Bipartite Pairing
April Cook-Off 2020 Division 1
Simple Operations
April Lunchtime 2020 Division 1
Dot Time, Xor Jar Muluk Tar, Triangle Query, Positive Mex
June Challenge 2020 Division 1
The Tom and Jerry Game!, Operations on a Tuple, The Delicious Cake, Convenient Airports, Guessing Game, Covid Sampling (Challenge)
RECode 12.0 (Rated for all)
Chef and String, Chef and Walk, Chef and Rotation, Chef and Or, Chef and Subsequences, Chef and Array, Chef and Numbers
January Challenge 2021 Division 1
Chef and Ants
August Challenge 2021 Division 1 (Unrated)
Special Triplets, Array Filling, Geometry 1, Chef and Bulb Invention, Charge Scheduling, Problem Difficulties, Olympics Ranking