Barnabás Kálmán
- bkalman
Hungary- Professional
- NNG
- No Active Plan. View Details
Activity Heat Map
Learning Paths (3)
Practice Paths (2)
Contests (49)
April Challenge 2013
Little Elephant and Music, Barcelona Gameplay Tactics, Kingdom Unity, Maximum Weight Difference, Levy Conjecture
May Challenge 2013
Matchsticks, Witua and Math, Password Cracking Challenge, Name Reduction, Your Name is Mine
June Challenge 2013
Predictopus, Lapindromes
July Challenge 2013
Chef and Walking on the rectangle , Count K-Primes
August Challenge 2013
Little Elephant and Lemonade, Hello Hello, Splitting Candies
September Challenge 2013
Chef and Integers , CAO Stage-1, CAO Stage-2
October Challenge 2013
Helping Lira, Maxim and Dividers
November Challenge 2013
Superpowers of 2, Yet Another Cute Girl, Uncle Johny, Square Digit Squares, Missing some chairs
December Challenge 2013
Chef and Codes, Funny Marbles, Magic Pairs, Reign, Rectangular Queries
January Challenge 2014
Please like me, Chef and Feedback
March Challenge 2014
Team Split, Binary Tournament, Walk, Little Chef and Numbers, Mike and Stamps
April Challenge 2014
Counting Matrices, Farmer Feb, Chef and Digits, Divide the Tangerine, Shortest Path in Binary Trees
May Challenge 2014
Little Elephant and Balloons, Compilers and Parsers, Chef-jumping, Chef and Strange Matrix, Stone
June Challenge 2014
Chef and Subarray, Guessing Game, Forgot Password
August Challenge 2014
Chef and Reversing, The Leaking Robot, Cleaning Tables, Chef and Gift
September Challenge 2014
Chef and Rainbow Array - 2, Chef and Left-Right, Fun with Rotation, Flooring
October Challenge 2014
Remy paints the fence, Sereja and two strings, Chef and Ground, 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
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, Let us play with rank list, Chef and Equality
July Challenge 2015
Bread, MasterChef, Na2a and lucky stone, Chef and Cube
September Challenge 2018 Division 1
Bad Shuffle
April Challenge 2019 Division 2
Playing with Numbers, Friend or Girlfriend, Maximum Remaining, Subtree Removal, Fencing
May Challenge 2019 Division 2
Reduce to One, Where to Build the Roads
June Challenge 2019 Division 2
Road Signs, Chef and Proxy, Guddu on a Date, Chef and Ingredients, Sum and GCD
July Challenge 2019 Division 2
Parity Again, Minimum and Maximum, Chef and Mean
August Challenge 2019 Division 2
Dilemma, Football, Distribute Apples, Zombie and the Caves
September Challenge 2019 Division 2
Chef and Good Subsequences, Easy Fibonacci, Chef and Interesting Subsequences
October Challenge 2019 Division 2
Even Edges, Missing Number, Chef and Maximum Star Value, Array Modification, Operations on a Matrix, Phone Prices
November Challenge 2019 Division 1
Physical Exercise, Hard Sequence, Smallest Beautiful Number, From Zero to Infinity, Weapon Value
December Challenge 2019 Division 1
Chefina and Ranges, Binary XOR, That Is My Score!, Addition
January Challenge 2020 Division 1
Chef and Dynamo, Doraemon, Breaking Bricks
February Challenge 2020 Division 1
No Change Required, School of Geometry, Long Contest and Cook Off Overlaps
March Challenge 2020 Division 1
Lasers Everywhere, Pintu and Fruits
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Ready Bitwise
May Challenge 2020 Division 1
Triple Sort, Coronavirus Spread, Isolation Centers
June Challenge 2020 Division 1
Even Matrix, The Tom and Jerry Game!, Chef and Icecream, Covid Sampling (Challenge), Chef and String, Chef and Price Control
July Challenge 2020 Division 1
Ada King, Chefina and Swaps, Missing a Point, Chef and Card Game, Chef and Strings
August Challenge 2020 Division 2
Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess, Smallest KMP
September Challenge 2020 Division 2
Chefina and Swap, A Problem on Sticks, Chef and Trump Cards, Find XOR, Ada Matrix, Coronavirus Spread 2
October Challenge 2020 Division 2
Positive AND, Replace for X, Covid Run, Chef and Easy Queries
November Challenge 2020 Division 2
Restore Sequence, Ada and Dishes, Magical Candy Store, Iron, Magnet and Wall
December Challenge 2020 Division 2
Even Pair Sum, Vaccine Production, Vaccine Distribution
January Challenge 2021 Division 3
Watching CPL, Fair Elections, Chef and Division 3, Point Of Impact, Encoded String
February Challenge 2021 Division 2
Frog Sort, Team Name, Chef and Meetings, Maximise Function, Highest Divisor
March Challenge 2021 Division 2
Interesting XOR!, Chef and Groups, College Life 4, Paparazzi Gennady, Space Arrays, No Time to Wait
April Challenge 2021 Division 2
Binary String MEX, Worthy Matrix, Chef and Dice, Valid Pair, World Record, Strong Language
July Challenge 2021 Division 2 (Unrated)
XxOoRr, Chef vs Bharat, Optimal Denomination, Maximum Production, Relativity
August Challenge 2021 Division 2 (Unrated)
Special Triplets, Array Filling, Chef and Bulb Invention, Problem Difficulties, Olympics Ranking
SnackDown 2021 - Online Qualifiers
Lucky Number, Maximum Number Of Distinct Elements
October Challenge 2021 Division 2 (Unrated)
Longest AND Subarray, Digit Removal, MEX-OR, Three Boxes, Which Mixture
SnackDown 2021 - Online Round 1A
Round Robin Ranks , Dance Moves, Min Max LCM
SnackDown 2021 - Online Round 1B
Queens Placement , Largest Laddu, Help Nishant
November Challenge 2021 Division 2 (Unrated)
Wildcard Replacement, Xor Equation, Weird Palindrome Making, Hill Sequence, Equal Coins, Which Fuel is Cheaper, Maximise the bridges
December Challenge 2021 Division 2 (Unrated)
Increasing String , Check Mate, Valleys and Hills, Rock Paper Scissors, Pyramid Traversal, List of Lists, Utkarsh and Placement tests, Squares Counting
January Long 2022 - I, Division 2 (Unrated)
Keplers Law, Prime in a binary string, Retrieve back the Array, Covid Spread, Chef and Riffles
January Long 2022 - II, Division 2 (Unrated)
Power Sum, Crying Colours, TCS Examination, Chef and Fixed Deposits
February Long 2022 - I, Division 2 (Unrated)
Binary Base Basics, Bitwise Blend, N Queens Puzzle Solved !, Chef and the Hair Salon
February Long 2022 - II, Division 2 (Unrated)
Avoid Fixed Points, World Chess Championship, Bitwise swaps, Chef and NextGen, Xor Palindrome
March Long One 2022, Division 2 (Unrated)
Akash and Function, Subarray XOR, Substring of a Substring, Akash and Missing Class, Exact Marks, Discus Throw, Bath in Winters, Wordle
March Long Two 2022, Division 2 (Unrated)
Minimum Longest Substring, Chef and Races, Increase IQ, The Three Topics, Missing Numbers, The Rating Dilemma, Same Parity Swaps in Binary Strings
April Long Two 2022 Division 2 (Unrated)
Geometric Mean Inequality, Pseudo Sorted Array
May Long One 2022 Division 2 (Unrated)
Mystical Numbers, Pushpa , The Magical Stone, Sugarcane Juice Business, The Attack of Queen, Football Cup, Miami GP
May Long Two 2022 Division 2 (Unrated)
Practice makes us perfect, Xor Palindrome, Score High, Total Prize Money, Make them Zero, Degree of Polynomial
June Long One 2022 Division 2 (Unrated)
Alternate Additions, Equal Strings
June Long Two 2022 Division 2 (Unrated)
Count the ACs, Make all equal using Pairs, AP Grid, Complementary Strand in a DNA, Reversal Sorting, Fitness, Strong Elements
July Long One 2022 Division 2 (Unrated)
Bidding, Journey of the Knight, Game of Piles Version 1, Slow Solution, Pass the Exam, Chef and Candies
July Long Two 2022 Division 2 (Unrated)
Maximize Difference, Concat Sort, Chef in his Office, To Divide or Not To Divide, Sum of Product 1, Insurance, Hungry Chef
September Long 2022 Division 2 (Unrated)
Interesting Subarray, Good Pairs
October Long 2022 Division 2 (Unrated)
Chef And Array Construction, Podium Finish, Minimum Pizzas, Binary Substituition, Building Race, Single Operation Part 1, Single Operation Part 2
November Long 2022 Division 2 (Unrated)
Time Complexity, Water Mixing, String Game
December Long 2022 Division 2 (Unrated)
Divisible by A_i, Gcd of Subarrays, Good Investment or Not, Divisible by K, Reach fast, Maximise XOR
January Long 2023 Division 2 (Unrated)
Asymmetric Swaps, Minimize the Maximum, Array Halves, Far from origin, Overspeeding Fine, Negative Product
Starters 152 (Rated)
Maximize Hamming Distance, Range Minimize