Mostafa Mahmoud
- 5★mostafa_109
Egypt- Other
- No Active Plan. View Details
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Ratings System Update
(2025-10-22 22:00:00)Ratings System Update
(2022-12-20 00:00:00)Learning Paths (0)
None
Practice Paths (0)
None
Contests (107)
March Challenge 2015
Count Substrings, Chef and Notebooks, Chef and Problems, Sereja and Random Array, 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, 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, Sereja and Game 2, Bread, MasterChef, Na2a and lucky stone, Chef and Cube, Rohith and Circles
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
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, Chef and Girls
March Cook-Off 2015
How to Minimize a String
May Cook-Off 2015
Devu and friendship testing, Devu and decorating birthday cake
June Cook-Off 2015
Strange operations
July Cook-Off 2015
Cops and the Thief Devu, Maximize Disjoint Pair Sum
August Cook-Off 2015
Chef and the XORed Number , Chef and the Wildcard Matching
September Mega Cook-Off 2015
Forgotten Language, Super Numbers, Stacks
November Cook-Off 2015
Sereja and Line, Sereja and Array and Subtracting
December Cook-Off 2015
Chef and Subarrays
May Lunchtime 2015
Devu and Grapes
July Lunchtime 2015
Greedy puppy, Puppy and game
August Lunchtime 2015
Churu and lost string, Minimum Maximum
November Lunchtime 2015
Query over Matrix, Black And White Cells
December Lunchtime 2015
Ancient Berland Roads, Distinct Codes
January Long Challenge 2016
Sereja and Salesman, Chef and Inflation, 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, Chef and math, 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, Chef and cities, Devu and an Array
July Challenge 2016
Andrash and Stipendium, Chef and Segments, Chef and Tetris, 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, Funny gnomes
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, 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
Train Partner
January Cook-Off 2016
Chef and Fruits
February Cook-Off 2016
Puppy and Board, Puppy and Sum
March Cook-Off 2016
Digital clock, Dual Nim, Alternating subarray prefix
April Cook-Off 2016
Movie Weekend, Odd Divisors, Queries on a Binary Tree
May Cook-Off 2016
Phantasialand
June Cook-Off 2016
Sticks, Right Triangle
July Cook-Off 2016
Chef and Proportion, Chef and Numbers
August Cook-Off 2016
Tweedle-Dee and Tweedle-Dum
October Cook-Off 2016
Watson asks Does Permutation Exist, ChefWatson uses Social Network
November Cook-Off 2016
Sebi and the highway
December Cook-Off 2016
Chef and Subset, Chef and Subarrays
January Lunchtime 2016
Triangle Classification
February Lunchtime 2016
Chef and Socks, Chef and Tic-Tac-Toe
March Lunchtime 2016
Simple Statistics, ABABAABA
April Lunchtime 2016
Maximum K Sums, Coins And Triangle
May Lunchtime 2016
Akhil And Colored Balls, Akhil And Random String
June Lunchtime 2016
Collisions, One more weird game
July Lunchtime 2016
Drumpf for President!, Lumpy - The Bus Driver
August Lunchtime 2016
Studying Alphabet
September Lunchtime 2016
Chef and Inequality
October Lunchtime 2016
The Largest Bouquet
December Lunchtime 2016
Superheroes and villains, Fly height mode
February Challenge 2017
Chef and Yoda, Eugene and big number, Interval Game, Chef and Triangles, Chef and his Best Friend, Chef and His Apartment Dues, Most Frequent Element, Gerrymander
March Challenge 2017
Cooking Schedule, Completing favorite game, Xenny and Alternating Tasks, Pishty and birthday, Bear and Extra Number, Bandwidth of a matrix
January Cook-Off 2017
Digit Longest Increasing Subsequences 2
February Cook-Off 2017
Download file, Cooking Game
January Lunchtime 2017
Sealing up, Nothing in Common
April Challenge 2017
Chef and Divisor Tree, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes
May Challenge 2017
Chef and Sub Array , Gotham PD, Chef and his daily routine, Courses in an university, Blocked websites, Median of adjacent maximum numbers, Chef and Subsequences
June Challenge 2017
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
August Long Challenge 2017
Chef and Rainbow Array, Chef And Fibonacci Array, Chef and Mover, Hill Jumping, Palindromic Game, Greedy Candidates, Strings and Graphs
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, 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, Max Mex, Counter Test For CHEFSUM, A Balanced Contest
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
December Challenge 2017
Chef and Universe, Total Diamonds, Chef And his Cake, Chef, Leonardo And Queries, Chef And Easy Xor Queries, Penalty Shoot-out, Red and blue points, Chef and Hamming Distance of arrays
May Cook-Off 2017
La Liga, Balanced Array
June Cook-Off 2017
Ada and crayons, SnackUp, Centeroid
July Cook-Off 2017
Chang and Bitwise OR, Chang and the Perfect Function, Chang and Perfect Quadruples
August Cook-Off 2017
Matrix and Chef, Real obtuse, From heaven to earth
September Cook-Off 2017
Infinite OR Game, Statistics Construction, Subsequence Equality
November Cook-Off 2017
Skiing, Online Chess, Random Pair
December Cook-Off 2017
Minimum SubArray, Beautiful Array, Football Match
March Lunchtime 2017
Bear and Ladder, Bear and Species
May Lunchtime 2017
Prefix Inversions, Post Tree
July Lunchtime 2017
Find the Maximum Value
August Lunchtime 2017
Mathison and the Dynamo shuffle, Mathison and pangrams
September Lunchtime 2017
Chef and Dice, Chef and Cook-Off Contests
December Lunchtime 2017
Days in Month, Strange Function, Too Much Sweetness
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
May Lunchtime 2018 Division 1
Count Substrings, Shifted Palindrome, Maximum Plus
November Lunchtime 2018 Division 1
Useful Number, Beats and Pieces
February Challenge 2019 Division 1
Manhattan Rectangle, Guess It Right, Chef and Secret Ingredients, Xor Decomposition, Yet Another Tree Problem, (Challenge) Chef with Orchestra in the Kitchen, Art of Balance, Maximize the Tax
February Lunchtime 2019 Division 1
The Tricky Deal, Chef Challenge
March Challenge 2020 Division 1
Chef and DAG, Break, Winning Ways 2, Lasers Everywhere, Lasers Everywhere Alternative
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Perfect Power Divisors, Ready Bitwise, Factor Tree
May Cook-Off 2020 Division 1
Chef, Chefina and Their Friendship, Chefina on a Trip, Roads in Chefland
May Lunchtime 2020 Division 1
Convert the String
June Challenge 2020 Division 1
The Tom and Jerry Game!, Operations on a Tuple, The Delicious Cake, Convenient Airports
April Cook-Off 2021 Division 1
OR of ANDs
May Challenge 2021 Division 2 (Rated)
Valid Paths, Tree House, An Interesting Sequence, King Killing, Xor Equality, Tic Tac Toe, Modular Equation
SnackDown 2021 - Online Qualifiers
Prefix as a Substring 2, Lucky Number, Maximum Number Of Distinct Elements, Minimise Difference
October Cook-Off 2021 Division 1
Can You Reach The End, Find the Modulus
SnackDown 2021 - Online Round 1A
Yet Another Flipping Problem, Round Robin Ranks , Dance Moves, Equal Beauty, Min Max LCM
SnackDown 2021 - Online Pre-Elimination
Product Pain
December Cook-Off 2021 Division 2
Median Minimization, Binary String Game, Musical Chairs
December Lunchtime 2021 Division 2
Maximum Trio, Optimal Sorting, Romantic Reversals
Code Drive Division 2 (Rated)
Sum this up, Again XOR problem, Maximum Factors Problem, Count Number of Peaks
CodeChef Starters 33 Division 2 (Rated)
Stable Mex, Distinct Dilemma, Broken Life, Non Adjacent Flips, Make Them Equal
CodeChef Starters 34 Division 2 (Rated)
Binary Mismatch, Average Array, Binary String Xor, Good Permutation
Starters 35 Division 2 (Rated)
Dark Light
Starters 38 Division 2 (Rated)
Good Pairs, Average Gift, Circular Track
Starters 43 Division 2 (Rated)
Array Sorting, Make them Equal, The Optimal Pairs, Permutation AND, Distinct Palindrome
Starters 208 (Rated till 6 star)
GCND, Cycle and Add
Starters 209 (Rated till 5 star)
Binary Love, Tactical Conversion, High Score (Easy Version)