Oleksandr Kozlov
- 4★kai977
- Ukraine
- Professional
- Taurida V.I. Vernadsky National University
- No Active Plan. View Details
Activity Heat Map
Rating Graph
Ratings System Update
(2022-09-14 23:00:02)Ratings System Update
(2022-12-20 00:00:00)Learning Paths (0)
Practice Paths (1)
Contests (156)
May Challenge 2012
Jewels and Stones, Lucky lucky number, Divisible Pairs, Remember the recipe, A Home for Chef
September Challenge 2012
Kisses & Hugs, Chef World, Racing Horses, Queries About Numbers, ChefTown Parade, Three is Crowd
December Challenge 2012
Granama Recipes, Book Exercises, Magic Rankings, The Uncountable Ways, Pizza Delivery
January Challenge 2013
Little Elephant and Alcohol, The Minimum Number Of Moves, End Of The World, Chef of the Year, Three Different Numbers
March Challenge 2013
Random decreasing function, Tourist Translations, Approximately, Fire Escape Routes, Minesweeper
April Challenge 2013
Little Elephant and Music, Barcelona Gameplay Tactics, Kingdom Unity, Maximum Weight Difference, Levy Conjecture
August Challenge 2013
Little Elephant and Lemonade, Hello Hello, Save The Princess, The Number Of Solutions, Chef and Segments, Splitting Candies
September Challenge 2013
Little Elephant and Exams, Cool Guys, Chef and Integers , CAO Stage-1, CAO Stage-2
December Challenge 2013
Cube Cakes, Chef and Codes, Funny Marbles, Magic Pairs, Reign, Rectangular Queries
February Challenge 2014
Draughts, Make Him Happy, Longest Common Pattern, Little Elephant and Subarrays, Colored Array, Make It Zero 2
June Challenge 2014
Maxim and Progressions, Chef and Functions, Chef and Digit Jumps, Chef and Subarray, Guessing Game, Forgot Password
September Challenge 2014
Chef and Rainbow Array - 2, Chef and Left-Right, Chef and sequence, Fun with Rotation, Flooring
October Challenge 2014
Remy paints the fence, Chef and Ground, Chef and Painting, Chef and Square, Magical Girl and Colored Liquid Potions, DevuLand, Dinosaurs and Laddus
November Challenge 2014
Chef and Segment Game, Distinct Characters Subsequence, Let us construct palindrome
January Challenge 2015
Queries on the String, Chef and A Large Permutation, Chef and Stones, Sereja and Votes, One Dimensional Kingdoms, Gcd Queries
February Challenge 2015
Chef and Chain, Chef and Strange Formula, Chef and Strings, Let us play with rank list, Chef and Equality
April Challenge 2015
Count Sequences, Chef and Array, Chef and Interview, Broken Telephone, Inversion sorting, Chef and Piano Scales
May Challenge 2015
Devu and binary String, Chef and Prime Divisors, Set Difference , Chef and new recipe, Chef and Cake
June Challenge 2015
Steady tables, Chef and His Friend, Chef and Memory Limit, Chef and Polygons, Chef and String
September Challenge 2015
Chain of Doughnuts, Nikitosh and xor, Count Steps in Matrix, Bank robbery, Lighthouses
October Challenge 2015
Time measure, Count Subarrays, Who dares to be a millionaire, Spheres, Rupsa and Equilateral Triangle
May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Fill The Matrix, Little Chef and Sums
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
April Challenge 2018 Division 2
Chef and Array (Challenge), Weight of Numbers, Highway Crossing, Count Good Prefixes, Average of Pairs, Workers
August Challenge 2018 Division 1
Coordinate Compression , Modular GCD, Interactive Matrix, Lonely Cycles
December Challenge 2018 Division 1
(Challenge) Delete DAG, Max and Electrical Panel, Directing Edges, Chef and Interactive XOR
October Challenge 2018 Division 1
Appy and Balloons , Beautiful Bricks, Minimize Digitsum, Chef and Surprise Chessboard
January Challenge 2019 Division 1
Yet Another Problem About Sequences, Different Neighbours, Partition the Graph, Distinct Pairs, A Pizza Slice
February Challenge 2019 Division 1
Manhattan Rectangle, Guess It Right, Chef and Secret Ingredients, Art of Balance
April Challenge 2019 Division 1
Offer for Chef, Kira Loves Palindromes, Playing with Numbers, Subtree Removal
September Challenge 2019 Division 1
Biladerim Icin, Fuzzy Linear Combinations, Chef Designed a Network
December Challenge 2019 Division 1
Chefina and Ranges, Binary XOR, Sticky Notes, (Challenge) Cubical Virus, Addition
February Challenge 2020 Division 1
Chef and Railway Stations, Expected Change, No Change Required, (Challenge) Raisins, Long Contest and Cook Off Overlaps
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Ready Bitwise, Leaked Answers (Challenge)
August Challenge 2020 Division 1
Insanely Hard School Exams, Subsequence Frequency Counting, Smallest KMP, Chef and Wedding Arrangements
September Challenge 2020 Division 1
Chefina and Swap, Chef and Trump Cards, Find XOR, Divide Candies, Ada Matrix
December Challenge 2020 Division 1
Hail XOR, Calculus, String Operations, Positive Prefixes, Even Pair Sum
February Challenge 2021 Division 2
Frog Sort, Team Name, Prime Game, Multiple Games, Maximise Function
February CodeChef Starters 2021 Division 2 (Unrated)
Maximum Value, College Life 2, College Admissions, Valid String, Chef and Coupon
March Challenge 2021 Division 2
Interesting XOR!, College Life 4, Consecutive Adding, Paparazzi Gennady, Space Arrays
May Challenge 2021 Division 2 (Rated)
Valid Paths, Tree House, An Interesting Sequence, King Killing, Xor Equality, Tic Tac Toe, Modular Equation
June Challenge 2021 Division 2 (Unrated)
Minimum Dual Area, Shortest Route, Bitwise Tuples, Bella ciao, Summer Heat, Minimum Subtree Cover
June CodeChef Starters 2021 Division 2 (Unrated)
Total Correct Submissions, Sleep Cycle, Chess Match, Cyclic Quadrilateral
August Challenge 2021 Division 2 (Unrated)
Special Triplets, Array Filling, Geometry 1, Chef and Bulb Invention, Charge Scheduling, Problem Difficulties, Olympics Ranking
September Challenge 2021 Division 2 (Unrated)
XOR Equal, Shuffling Parities, Minimize Digit Sum, 2-D Point Meeting, Airline Restrictions, Travel Pass, Minimum Digit Sum 2
CodeChef Starters 13 Division 2 (Rated)
Add and Divide, Chef in Vaccination Queue, Maximum Light Up, Make that Array!, Magical Doors
November Challenge 2021 Division 2 (Unrated)
Weird Palindrome Making, Hill Sequence, Equal Coins, Maximise the bridges
December Challenge 2021 Division 2 (Unrated)
Valleys and Hills, Rock Paper Scissors, Pyramid Traversal, List of Lists, Squares Counting
January Long 2022 - I, Division 2 (Unrated)
Prime in a binary string, Retrieve back the Array, Chef and Riffles
February Lunchtime 2022 Division 2
Four Equidistant Points on a Grid, Parallel Processing, Magnet Sort
March Long One 2022, Division 2 (Unrated)
Akash and Function, Subarray XOR, Substring of a Substring, Exact Marks
March Cook-Off 2022 Division 2
Fixed Weight, Janmansh at Fruit Market, Dragonado And XOR, Equal Mex Splitting, Alternating Divisibility
August Long 2023 Division 2 (Unrated)
Codechef Copy, All New CodeChef, Maximum Deliciousness, I Can Use Both Hands!