Khalid A
- 4★khalid545
Morocco- Other
- No Active Plan. View Details
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(2021-02-15 15:00:00)Ratings System Update
(2022-12-20 00:00:00)Learning Paths (0)
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Practice Paths (0)
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Contests (82)
November Challenge 2012
Coin Flip, Sridhar Likes Travelling
December Challenge 2012
Granama Recipes, Magic Rankings
January Challenge 2013
Little Elephant and Alcohol, The Minimum Number Of Moves, End Of The World, Chef of the Year, Three Different Numbers
February 2013 Challenge
Little Elephant and Cards, Buy1-Get1, Climbing Stairs
March Challenge 2013
Random decreasing function, Tourist Translations, Approximately, Fire Escape Routes
April Challenge 2013
Maximum Weight Difference, Levy Conjecture
May Challenge 2013
Matchsticks, Password Cracking Challenge, Name Reduction, Your Name is Mine
June Challenge 2013
Predictopus, To challenge or not, Lapindromes
July Challenge 2013
Count K-Primes
August Challenge 2013
Little Elephant and Lemonade, Hello Hello, Save The Princess, Splitting Candies
October Challenge 2013
Helping Lira
November Challenge 2013
Superpowers of 2, Yet Another Cute Girl, Uncle Johny, Square Digit Squares, Missing some chairs
December Challenge 2013
Art in Digital Age, Chef and Codes, Funny Marbles, Magic Pairs, Reign, Rectangular Queries
January Challenge 2014
Sereja and Graph, Bon Appetit, Please like me, Chef and Feedback
March Cook-Off 2014
Dividing Stamps
June Cook-Off 2014
Counting Flags, Painting
February Challenge 2014
Make Him Happy, Longest Common Pattern, Little Elephant and Subarrays
March Challenge 2014
Sereja and Sorting 2, Team Split, Binary Tournament, Walk, Little Chef and Numbers, Mike and Stamps, A Story with Strings
April Challenge 2014
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, Compilers and Parsers, Chef-jumping, Chef and Strange Matrix, Stone
June Challenge 2014
Maxim and Progressions, Chef and Functions, Chef and Digit Jumps, Chef and Subarray, Guessing Game, Forgot Password
July Challenge 2014
Little Elephant and Painting, Garden Game, Chef and Frogs, Chef and Rectangle Genome, Count Substrings, Reach The Point, Dish Owner
August Challenge 2014
Mountain Holidays 2, Sereja and Shuffling, Little Elephant and T-Shirts, Chef and Reversing, The Leaking Robot, Earthquake, Cleaning Tables, Chef and Gift
September Challenge 2014
Factorisation, Chef and Rainbow Array - 2, Chef and Swaps, Chef and Left-Right, Chef and sequence, Fun with Rotation, Flooring
October Challenge 2014
Remy paints the fence, Sereja and two strings, Chef and Ground, Chef and Painting, Chef and Square, 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 Permutations, Distinct Characters Subsequence, Chef and Red Black Tree, Let us construct palindrome, The Spelling Problem
December Challenge 2014
Chef Under Pressure, Alok-nath and His Sanskars, Chef and Bracket-Pairs, Kali and Devtas, XOR with Subset, Chef and Apple Trees, Sereja and GCD
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
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, Xor Matrix, Jigsaw Puzzle Solving, Chef and Equality
March Challenge 2015
Count Substrings, Chef and Notebooks, Devu and his Class, Sign Wave, Matrix
April Challenge 2015
Count Sequences, Chef and Interview, Broken Telephone, Division of Lands, Chef and Piano Scales
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
Steady tables, Chef and His Friend, Chef and Memory Limit, Chef and Polygons, Anticommutative implication, Chef and String
July Challenge 2015
Addition and Multiplication, Bread, MasterChef, Na2a and lucky stone, Chef and Cube
August Challenge 2015
Way Out, Gravity Guy, Devu And Churu , Cooking Machine, Aditi and Magic Trick, Chef and insomnia
September Challenge 2015
Chain of Doughnuts, Nikitosh and xor, Count Steps in Matrix, Bank robbery, Cracking the Code
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
Ingredients, Receipt Recovery, Chef and collection of stamps, Eugene and function, Simple Sum, Chef and cakes
December Challenge 2015
Chef and cinema, Chef and the stones, Plane Division, Oracle Devu and Longest Common Subsequence, Chef and Filters
January Long Challenge 2016
Sereja and Salesman, Rupsa and the Game, Churu and Balls, 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
March Challenge 2016
Sereja and Two Strings 2, Chef And Hungry Birds, Palindromic substrings, maximize the sum, Parity tree, Chef And Special Dishes
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
May Challenge 2016
Sereja and GCD 2, 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, Devu and an Array
July Challenge 2016
Andrash and Stipendium, Chef and Segments, Chef and Tetris, Evaluate the polynomial, Chef and Robots Competition, Chefland and Electricity
August Challenge 2016
Chef and His Garden, Chef and Circle Run, Chef and Chocolate, Chef and Round Run
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, Fenwick Iterations, Chef and Three Dogs
November Challenge 2016
Count Permutations, Friends Meeting, Urban Development, Gift and Chef, Chef and squares, Task for Alexey
January Challenge 2017
Capital Movement, Cats and Dogs, Digits Cannot Separate, Reservior, Tourists in Mancunia
February Challenge 2017
Chef and Triangles, Chef and His Apartment Dues, Most Frequent Element, Gerrymander
March Challenge 2017
Cooking Schedule, Xenny and Alternating Tasks, Bear and Extra Number, Bandwidth of a matrix
April Challenge 2017
Chef and Digits, Bear and Random Grid, Chef and Divisor Tree, Stable market, 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
June Challenge 2017
Chef and Prime Queries, A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets
July Challenge 2017
Chef and Sign Sequences, Pishty and tree, Tree Expectancy, Whats in the Name, Calculator , IPC Trainers, Two Coins
August Long Challenge 2017
Chef and Rainbow Array, Chef And Fibonacci Array, Chef and Mover, Palindromic Game, Greedy Candidates, Strings and Graphs
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Sum of Cubes, Weasel does Xor on Tree, Fill The Matrix, Little Chef and Sums
October Challenge 2017
Chef and Magic Arrays, Chef and a great voluntary Program, Chef and Cycled Cycles, Shooting on the array, Max Mex, Counter Test For CHEFSUM, A Balanced Contest, (Challenge) Connecting computers
November Challenge 2017
Chef Hates Palindromes, Chef and Subarray Queries, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
December Challenge 2017
Chef and Universe, Total Diamonds, Chef And his Cake, Chef And Easy Xor Queries, Penalty Shoot-out, Red and blue points, Chef and Hamming Distance of arrays
January Challenge 2018
A humongous Query, Killjee and k-th letter , 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
Chef and Easy Problem, Mix the Colors, Minions and Voting
April Challenge 2018 Division 1
Chef and Array (Challenge), Cutting Plants, Highway Crossing, Count Good Prefixes
May Challenge 2018 Division 1
S-T Mincut, Change the Signs, Fake Binary Search, Dibs on Fibs
June Challenge 2018 Division 1
Two Flowers, Vision
October Challenge 2018 Division 1
Appy and Balloons , Beautiful Bricks, Minimize Digitsum, Chef and Surprise Chessboard
October Challenge 2019 Division 1
Even Edges, Chef and Maximum Star Value, Array Modification, (Challenge) Maximizing LIS
November Challenge 2019 Division 1
Smallest Beautiful Number
December Challenge 2019 Division 2
Chefina and Ranges, Plus Multiply, Binary XOR, Easy Subsequence Selection, Sticky Notes, (Challenge) Cubical Virus, That Is My Score!, Addition
January Challenge 2020 Division 1
Chef and Dynamo, Doraemon
February Challenge 2020 Division 1
No Change Required, Long Contest and Cook Off Overlaps
March Challenge 2020 Division 2
Chef and DAG, XOR Engine, Ada Bishop 2, Lasers Everywhere, Pintu and Fruits
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Ready Bitwise
September Challenge 2020 Division 1
Chefina and Swap, Chef and Trump Cards, Find XOR, Ada Matrix
January Challenge 2021 Division 2
Chef and Ants, Expected Number of SCCs, Watching CPL, Fair Elections
December Challenge 2020 Division 1
Hail XOR, Square Root of LCA Convolution, Calculus, String Operations, Positive Prefixes, Even Pair Sum
February Challenge 2021 Division 1
Team Name, Prime Game, XOR Sums
October Challenge 2021 Division 1 (Unrated)
Longest AND Subarray, Digit Removal, MEX-OR
July Long One 2022 Division 1 (Unrated)
Largest Square in the garden, Game of Piles Version 1, Find A, B, C
July Long Two 2022 Division 1 (Unrated)
Maximize Difference, Sum of Product 2, Similar Subsequence
August Long 2022 Division 1 (Unrated)
Angled Flip, Tree of Trees, XOR with smallest element, Hello Equation
September Long 2022 Division 1 (Unrated)
Distinct Numbers, Pokemon Battles, Interesting Subarray
December Long 2022 Division 1 (Unrated)
Sum of Cube , Divisible by A_i