Ahmed Ossama
- 5★ahmed1ossama13
- Electrical engineering student
- Egypt
- Student
- Ain Shams University Cairo, Egypt
- List of teams by Ahmed Ossama
- No Active Plan. View Details
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Submissions
Practice Problems (87):
Practice:
Transform the Expression, The Next Palindrome, Factorial, Small factorials, Mixtures, Ambiguous Permutations, Enormous Input Test, Sums in a Triangle, Simple Sorting, ATM, Life, the Universe, and Everything, Flipping Coins, Multiples of 3, Holes in the text, Lucky Palin, Lucky Long, Word Couting, Little Elephant and Alcohol, A Home for Chef, Buy1-Get1, The Minimum Number Of Moves, Root of the Problem, Chef of the Year, Minimum Distance, Three Different Numbers, Snape and Ladder, The Ball And Cups, Palindrome, BiCo Gaming Grid, Andrew and the Meatballs, Andrew and the Meatballs again, Furik and Rubik and Sub Array, Subtraction Game 1, Subtraction Game 2, Sequence Transmission, Pairwise AND sum, Chef and The Divisibility Queries, Strange Matrix, Code, Minimum Product, Knight Fork, Divisible Subset, Approximately II, Knapsack Problem, Subarray GCD, Subarray LCM, Friends, Harrenhal, A wolf, a sheep and cabbage, Tanu and Head-bob, The Dirty Path, The Army, Walk on the Axis, Tree and Queries, Clash of Kings, Awesomeness of Strings, Powerhouses Again, Grid painting, Substring and five rules, Mahesh and his lost array, Delivery Man, Sum Of Binomial Coefficent , Queries On Tree, Good Joke!, Fit Squares in Triangle, Piece of cake, Road Decoration, Dhonis Bowlers, Hugphile Order, Matryoshka Dolls, Kiwi Number, Gabba sprint, Artist Rivalry, Suraj goes shopping, Tojo hates probabilities, Random Rudreshwar, How to Write a Message, Tickets, Devu and Manhattan Distance, Devu and most energetic minion, Aggressive Negotiations, Niceness of a tree, Wolverine and XOR, Queries with Pairs, Chef and Pairs, Array operations, Inversions of subsequences
Contests (386):
July Challenge 2013:
Galactik Football, The Probability Of Winning, Chef and Walking on the rectangle , Count K-Primes, Circle of death
August Challenge 2013:
Little Elephant and Lemonade, Hello Hello, The Number Of Solutions, Splitting Candies
ByteCode 2013:
Save Mumbai, Change in Primeland, FreeKart Map, Magic Sticks, Play with numbers, Bot of Rancho, Defuse the bomb
September Challenge 2013:
Little Elephant and Exams, Cool Guys, Chef and Integers , Project Spoon, CAO Stage-1, CAO Stage-2
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
December Challenge 2013:
Cube Cakes, Chef and Codes, Funny Marbles, Magic Pairs, Reign, Rectangular Queries
January Challenge 2014:
Magic Trick, Sereja and Graph, Bon Appetit, Please like me, Chef and Feedback
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
CodeNiche 2014, Trial round:
Help King Thorin in his quest, Sir Ravindra Jadeja, IITBHU Cultural Fest, Valar Morghulis, Permuted Array Problem
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
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
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
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
Learning Paths (0):
None
Practice Paths (7):
Contributions
Problems Authored (0)
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Problems Tested (0)
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Editorials Contributed (0)
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