Mohamed Anany

Practice: 

Bytelandian gold coins, Life, the Universe, and Everything, Holes in the text, Buying Candies, Double Strings, Factorisation, Game, Chef-jumping, Chef and Subarray, XOR with Subset, Word Stem, (Challenge) Chef and Palindromes, Processing a string, Sereja and Pairs, Maximum K Sums, Robot Walk, VCake, Chocolates for Everyone, Jealous Numbers, Coloring A Tree, So Close Yet So Far, Counting Strings, Digit Longest Increasing Subsequences 2, Safe Robot, Sticks, Ancestors in Two Trees, Chef and Pairs, Add or Multiply, Mex division, Walks on the binary tree, Good Pairs, Travel to all Points, Flower Pots, Weasel does Xor on Tree, Tree Connectivity, Max Mex, Mixing Colors, A Balanced Contest, Lucky Edge, Prime divisors, Recover Square, Travelling Saleschef, Doubly Increasing Path, Random Game, Pied Piper vs Hooli, Making a Meal, Mystery Tree, Chef Learning Hungarian Algorithm, Guess My Age, Perfection, What Is This, a Crossover Episode, Maximise Subsequence Value, String Operations, Another Tree with Number Theory, Sed Max, Interesting Representation, Binary String Game, Permutation Xor, Sum of range distinct queries, Smallest Difference, Xor X,Get MAX, Chef And Partytions, Yet Another XOR Sort, Meet over Grid, Checkpoint, Tree Xor, Sum Over All Arrays, Minimum OR Spanning Tree, A Peculiar Arrangement, No Palindrome, Chef Queries, Some Queries, Concussive Sequence

July Cook-Off 2016: 

Chef and Proportion, Chef and Numbers, Chef and Land

August Cook-Off 2016: 

Tweedle-Dee and Tweedle-Dum

April Challenge 2017: 

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 , 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: 

Whats in the Name, Calculator , IPC Trainers

November Challenge 2017: 

Chef Hates Palindromes, Chef and Subarray Queries, Chef goes Left Right Left, Lovers Gift, 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, Chef and Hamming Distance of arrays

June Cook-Off 2017: 

Ada and crayons, SnackUp

July Cook-Off 2017: 

Chang and Bitwise OR, Chang and the Perfect Function

August Cook-Off 2017: 

Real obtuse, From heaven to earth

July Lunchtime 2017: 

Find the Maximum Value, Good Pairs

January Challenge 2018: 

Killing Monsters, A humongous Query, K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers

February Challenge 2018: 

Chef And His Characters, Chef And The Patents, Chef and odd queries, Permutation and Palindrome

February Lunchtime 2018: 

Game with numbers, Jumping in the hills

March Challenge 2018 DIV 1: 

Chef and Easy Problem, Chef and Gcd Queries, Mix the Colors, Minions and Voting

September Challenge 2018 Division 1: 

AND Square Subsegments, Chef and Condition Zero (Challenge), Bad Shuffle

December Challenge 2018 Division 1: 

Max and Electrical Panel, Chef and Interactive XOR

October Challenge 2018 Division 1: 

Appy and Balloons , Beautiful Bricks, Minimize Digitsum, Chef and Surprise Chessboard, Distinct Rows in Submatrices

August Lunchtime 2018 Division 1: 

Chef and Eid, Mix Mix Game

February Challenge 2019 Division 1: 

Manhattan Rectangle, Guess It Right, Chef and Secret Ingredients, Xor Decomposition, Yet Another Tree Problem, Art of Balance, Maximize the Tax

February Cook-Off 2019 Division 1: 

Max Range Queries, Chef and Secret Password, Chef and Party

Coders' Legacy 2019 (Rated for all): 

Bathwater, Metro, IPL and RCB, Up for a Game

July Lunchtime 2019 Division 1 (Unrated): 

Delete a Subarray, Professor on a Trip, Two-lane Road

November Challenge 2019 Division 1: 

Physical Exercise, Smallest Beautiful Number, From Zero to Infinity, A Simple Game, Single Point of Failure

Alkhwarizm (Rated for all): 

Weirwood Trees, Danny Wants To Know

January Cook-Off 2021 Division 1 : 

Mex Subsequence, Not Too Colourful, Prefix And, Common Ancestors

January Lunchtime 2021 Division 1 (Unrated): 

Good Grid, Shifting Spoons, Dreams of Divisibility, Even Sum

June Challenge 2021 Division 1 (Unrated): 

Bitwise Tuples, Bella ciao, Summer Heat

SnackDown 2021 - Online Qualifiers: 

Prefix as a Substring 2, Lucky Number, Maximum Number Of Distinct Elements

SnackDown 2021 - Online Round 1A: 

Yet Another Flipping Problem, Dance Moves, Lazy Machine, Min Max LCM

December Cook-Off 2021 Division 1: 

Destructive Nim, RGB Construction, Break the Balance

December Lunchtime 2021 Division 1: 

In-tree-active Node Coloring, Optimal Sorting, Romantic Reversals, Sleep Technique

February Lunchtime 2022 Division 1: 

Chef Cooks Permutation, Visit Them All, Magical Modulo, Magnet Sort

March Cook-Off 2022 Division 1: 

Secret Tree, Dragonado And XOR, Alternating Divisibility

April Lunchtime 2022 Division 1(Rated): 

Modular Circular Permutations, Do Not Touch the MEX!!!, Secret Machine Mania, AND Palindromes

May Cook-Off 2022 Division 1 (Rated): 

Different Subarrays Rearrange

September Lunchtime 2022 Division 1 (Rated) (Based on EJOI): 

Increasing Addition

Starters 68 Division 1 (Rated till 5-stars): 

Guess All, Boring String, XOR Product, Interesting Array, Make Money

Starters 69 Division 1 (Rated till 6-stars): 

Make everything divisible by 3, Distinct Sequence, Longest Subarray

Starters 70 Division 1 (Rated till 6-stars): 

Strange Bitwise Operation, X AND Y Tree, Two Counters, Prime Reversal, Frequency Array Retrieval

Starters 71 Division 1 (Unrated): 

Flip the Prefix, Unique Mode, Maximizing LCS, Smallest Difference

Starters 72 Division 1 (Rated till 5-Stars): 

N Triplets, Good Sequence, Good Arrangement, XOR Tree

Starters 73 Division 1 (Rated till 6-Stars): 

Minimum OR Path, Find an integer, Consecutive Xor, First To Last, Elevators

Starters 74 Division 1 (Rated till 6-Stars): 

Candies, Maximum Xor Sum, Distinct Values, Power Tree, Lcm hates Gcd, Medicine Strength, Minimal Inversions

Starters 75 Division 1 (Rated till 6-Stars): 

Chefs Favourite Function, Minimum Replacement, Equal Hamming Distance, Prefix Ones

February Cook-Off 2023 Division 1 (Rated): 

Take Not Less, Alice Potter and OWL, Alice Potter And Dumbledore Army

Starters 77 Division 1 (Rated till 5 Stars): 

Sort a String, K Forests, Concat Palindrome, K Increment Palindrome, Three Numbers

Starters 78 Division 1 (Rated till 6 stars): 

MinAdd, Bitwise Equation, Balanced Suffix, Solve More Problems!, Divisible Subarray Counting

Starters 79 Division 1 (Rated till 5 Stars): 

Love Squares Hate Cubes, K-Beautiful Subarrays, Mountain, One Stone or Two Stones, Split or Decrease

Starters 80 Division 1 (Rated till 5 stars): 

Permutation Subsequence, Three-People Contests, c8kbf and Tree, Prefix Permutation, Eat Rock!, Matrix Pain

Starters 82 Division 1 (Rated till 6 stars): 

Mode!, Find eX, Good Permutations, Difference Matrix

Starters 84 Division 1 (Rated till 6 Stars): 

SUM OR, Twice GCD Thrice LCM, Max count of 1, Digit Operation, Chef And Adjacent Sums

Starters 85 Division 1 (Rated till 6 stars): 

Crazy Bishops on Chessboard, Efficient PAN Linking, GCD Queries, Bomb Blast, TripTastic

Starters 86 Division 1 (Rated for All): 

Least Size, Minimum Operation, String Game , Largest Y

Starters 87 Division 1 (Rated till 6 Stars): 

OR-XOR, Count the Permutations (always), Inversions of subsequences, AB plus C, One or All

Starters 83 Division 1 (Rated): 

Mex Segments, Construct String, Order by XOR, Saber Slays, Rotate to Minimum, Restoration

Starters 88 Division 1 (Rated till 6 Stars): 

Maximum And Or, Chef and Asteroids, Good Operations, Minimize the Bits, Chef and Good Array

Starters 89 Division 1 (Rated till 5 Stars): 

Positive or Negative Subarrays, Subarray Removal, Two Averages, Restore Communication, Tree Queries, Evil Infection

Starters 90 Division 1 (Rated till 6 Stars): 

Crushed Apples and a Balance Scale, Minimum Ugliness, Sum of Goodness, Finding Sum, Printing Binary Array, Anti Palindrome

Starters 91 Division 1 (Rated till 6 Stars): 

Cheapest Office, XOR & Sum, Limited Shopping, Odd GCD Permutation, More Inversions, Chef Odd, Maximum Sum Permutation

Starters 92 Division 1 (Rated till 6 Stars): 

Rectangular Tiling, Dividing into Groups, Chef and Polygons, Chef Graph, Beautification of array, Distance Coloring

Starters 95 Division 1 (Rated till 6 Stars): 

Partition and Maximize

Starters 96 Division 1 (Rated till 5 Stars): 

Remove Stones, Chef and Prefixes, Absolute Differences

Starters 97 Division 1 (Rated till 6 Stars): 

Make It Special, Unreachability Cost, Chef and Division, Triplets Min

Starters 99 Division 1 (Rated till 6 Stars): 

Segment Three, Maximize Ones, Musical Chairs, Two Piles, Yet Another Bitwise Problem, Exclusion-Inclusion

Starters 100 Division 1 (Rated): 

Prime Permutation, Stamps 100

Starters 101 Division 1 (Unrated): 

Minimize Xor Difference, Split and ADD, Snakes on a Grid, Partially Increasing Array Queries, Warrior Chef

Starters 103 Division 1 (Rated till 6 Stars): 

Cost Distribution, Squarified, X-Ray Grid, Chandelier, Unique xor, Divisible By 8

Problems Authored (3)

Problems Tested (0)

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Editorials Contributed (1)