Mahmoud Badawy

Practice: 

Pricing Tollbooths, Fire Escape Routes, Sherlock and Inversions, Chef and Red Black Tree, Small Factorial, Chef And The Hiring Event, Chef and the XORed Number , Chef and the Wildcard Matching, Capital Movement, Magical Strings, String Swap, Chef And Binary Operation, Gift and Chef, Chef and Coins Game, Total Palindromic Numbers, Cats and Dogs, Devu and an Array, Maximum sum, Maximum Zeros, Finding criminals, Maximum time, Coin Denominations, Maximal Expression, Adjacent Flips, Palindromic Prime Numbers, Rock Paper Scissor, Pending Assignments, Clear Day, OR Permutation

September Challenge 2015: 

Count Steps in Matrix

October Challenge 2015: 

Time measure, Who dares to be a millionaire, Count Subarrays

March Challenge 2016: 

Palindromic substrings, Chef and Number Guessing, maximize the sum

April Challenge 2016: 

Chef and Ballons, Chef And Coloring

September Challenge 2016: 

Dividing Machine, Chef and Matrix Division, Chef and digits of a number, Faded Palindromes, Chef and calculation

October Challenge 2016: 

Chef and Three Dogs, Fenwick Iterations, Chef and Keyboard

November Challenge 2016: 

Count Permutations, Friends Meeting, Urban Development, Gift and Chef, Chef and squares, Task for Alexey

Past ZCO Problems: 

Matched Brackets, Tournament, Video Game, Smart Phone, Variation

Past INOI Problems: 

Free ticket, Sequence Land, Triathlon

September Challenge 2017: 

Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Fill The Matrix, Little Chef and Sums

July Lunchtime 2018 Division 1: 

Forced Particles, GCD Sum, Prime divisors

July Lunchtime 2019 Division 1 (Unrated): 

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

October Challenge 2019 Division 1: 

Array Modification, (Challenge) Maximizing LIS, Chef and Maximum Star Value, Even Edges

December Lunchtime 2020 Division 1 (Unrated): 

Three Letters, One Zero Swaps

SnackDown 2021 - Online Qualifiers: 

Lucky Number, Maximum Number Of Distinct Elements, Minimise Difference

SnackDown 2021 - Online Round 1A: 

Yet Another Flipping Problem, Round Robin Ranks , Dance Moves, Min Max LCM

SnackDown 2021 - Online Pre-Elimination: 

Non-Decreasing Subsequence of size K, Product Pain, Guests like slippers

SnackDown 2021 - Online Elimination Round (Rated for all): 

Sorting Segments

Problems Authored (4)

Problems Tested (0)

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Editorials Contributed (4)