Ahmed Ossama
- ahmed1ossama13
Egypt- Student
- Ain Shams University Cairo, Egypt
- No Active Plan. View Details
Submissions Heat Map
Learning Paths (0)
Practice Paths (1)
Contests (83)
June Challenge 2013
Predictopus, To challenge or not, Lapindromes
July Challenge 2013
Galactik Football, The Probability Of Winning, Chef and Walking on the rectangle , Count K-Primes, Circle of death
July Cook-off 2013
Chopsticks, A Plus B Again!
August Challenge 2013
Little Elephant and Lemonade, Hello Hello, The Number Of Solutions, Splitting Candies
August Cook-Off 2013
Chef and The Right Triangles
September Challenge 2013
Little Elephant and Exams, Cool Guys, Chef and Integers , Project Spoon, CAO Stage-1, CAO Stage-2
October Cook-Off 2013
Polo the Penguin and the Numbers, Polo the Penguin and the Test
October Challenge 2013
Little Elephant and Bamboo, Helping Lira, Maxim and Dividers, Sereja and Transformation, Yet Another Nice Girl, Edit Distance on Grid, Kamehameha
November Challenge 2013
Superpowers of 2, Yet Another Cute Girl, Sereja and Vectors, Uncle Johny, Square Digit Squares, Missing some chairs
November Cook-off 2013
Am I a Fibonacci Number, Rank of the Number
December Challenge 2013
Cube Cakes, Chef and Codes, 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
January Cook-off 2014
Chef and the Cake I
February Cook-Off 2014
Chef and Remissness, Chef and Kingship, Chef and Reunion
March Cook-Off 2014
Game of Divisors, ABC-Strings, Dividing Stamps
July Cook-Off 2014
Copy-Paste, Sum Queries
August Cook-Off 2014
Tree Game, Permutation Shuffle, Shooting
November Cook-Off 2014
Lost Graph, Most Distant Points, Brackets, Petersen Graph
February Challenge 2014
Little Elephant and Movies, Draughts, Make Him Happy, Longest Common Pattern, Little Elephant and Subarrays, Colored Array, Make It Zero 2
March Challenge 2014
Team Split, Binary Tournament, Walk, Maximum number, GCD condition, 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
Little Elephant and Blocks, 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, Count Substrings, Reach The Point, Dish Owner
August Challenge 2014
Mountain Holidays 2, Little Elephant and T-Shirts, Chef and Reversing, The Leaking Robot, 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 Square, Magical Girl and Colored Liquid Potions, DevuLand, Dinosaurs and Laddus
November Challenge 2014
Chef and Segment Game, Chef and Words, 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
January Lunchtime 2014
Chef and Shop, Chef and String, Chef and Numbers
February Lunchtime 2014
Sereja and ASum, Sereja and D, Sereja and Arrays
July Lunchtime 2014
And Operation, Shift The String
September Lunchtime 2014
Chef and easy problem, Chef and easy problem 2, Chef and medium problem 2
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, Time to Study Graphs with Chef, Chef and Strange Formula, Chef and Strings, Let us play with rank list, 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, Inversion sorting, 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
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, Lighthouses, 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
Receipt Recovery, Chef and collection of stamps, 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, Misha and Permutation, Chef and Filters, Chef and Girls
March Cook-Off 2015
How to Minimize a String, How to Choose a Subset, How to Write a Message, How to Repaint a Fence
May Cook-Off 2015
Devu, his friends and birthday gifts, Devu and friendship testing, Devu and decorating birthday cake, Devu and most energetic minion
July Cook-Off 2015
Cops and the Thief Devu, Maximize Disjoint Pair Sum, Path containing K Nodes, Adding Special Sum
September Mega Cook-Off 2015
Reign 2, Forgotten Language, Super Numbers, Stacks
October Cook-Off 2015
Word Stem, Almost Sorted Permutation
December Cook-Off 2015
Chef and Subarrays, Chef and Queries, Chef and LCS, Chef and Vectors
July Lunchtime 2015
Greedy puppy, Puppy and game, Puppy and cats
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, Palindromic substrings, maximize the sum, Chef And Special Dishes
April Challenge 2016
Amazing Experiment, 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, Easy Queries, Chef and math, Chef and Balls, Forest Gathering, Chef and Amazingness of Numbers, 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, 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 digits of a number, Faded Palindromes, JosephLand, Chef and calculation
October Challenge 2016
Chef and Keyboard, Big Queries, Fenwick Iterations, Chef and Three Dogs, Chef and Two String
November Challenge 2016
Count Permutations, Friends Meeting, Urban Development, Gift and Chef, Chef and squares, Task for Alexey
December Challenge 2016
Kth Max Subarray
February Cook-Off 2016
Puppy and Palindromes, Puppy and Catchers, Puppy and Board, Puppy and Sum
April Cook-Off 2016
Movie Weekend, Odd Divisors, Queries on a Binary Tree
September Cook-Off 2016
Lazy Jem, The Lost Arithmetic Sequences, Counting Strings
October Lunchtime 2016
FastFood Combos, The Largest Bouquet
January Challenge 2017
Capital Movement, Cats and Dogs, Reservior, Tourists in Mancunia
January Lunchtime 2017
Sealing up, Nothing in Common, Segment Queries
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
June Cook-Off 2017
Ada and crayons, Knight Covering, SnackUp, Centeroid
March Lunchtime 2017
Bear and Haircut, Bear and Ladder, Bear and Species
August Lunchtime 2017
Mathison and the Dynamo shuffle, Mathison and pangrams
April Challenge 2018 Division 1
Cutting Plants, Highway Crossing, Count Good Prefixes
October Challenge 2018 Division 1
Appy and Balloons , Minimize Digitsum
May Lunchtime 2020 Division 1
Absolute Min Max, Convert the String, Tree difference
June Lunchtime 2020 Division 1
Maximum AND, Square Submatrices