Mohammed Ehab

September Challenge 2016

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

October Challenge 2016

Chef and Keyboard, Fenwick Iterations, Chef and Three Dogs

November Challenge 2016

Count Permutations, Friends Meeting, Urban Development, Gift and Chef, Chef and squares, Sereja and Ways in the Cube, Task for Alexey

March Challenge 2017

(CH) Bear and Sorted Rows, Bandwidth of a matrix, Xenny and Alternating Tasks, Cooking Schedule, Bear and Extra Number

September Challenge 2017

Little Chef and Sums, Fill The Matrix, Weasel does Xor on Tree, Minimum Good Permutation, Chef and Pick Digit, Sereja and Functions (Challenge), Sereja and Commands

January Challenge 2018

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

July Lunchtime 2018 Division 1

Prime divisors, GCD Sum, Forced Particles

September Lunchtime 2018 Division 1

Opposite Cites, Chef Restaurant , Match the Streams

November Lunchtime 2018 Division 1

Useful Number, Maximize It, Beats and Pieces

October Lunchtime 2018 Division 1

Weird Question, Niceness of the Arrays, Coloring the Grid

December Lunchtime 2018 Division 1

Choosing from Buckets, Drawing Lines, Maximize the NOSS, Find Best Path, Age Calculator

January Lunchtime 2019 Division 1

Mouse Meets Cheese, Rooks, Distances, Wanderer

April Lunchtime 2019 Division 1

Dream Problem, Firdavs and Planet F, Minimum Sum, Chef Rami and Inventions

June Lunchtime 2019 Division 1

Igzi and Burly Array, Ivan Pesic and His World Tour, Gii and His Club, The Grux Permutation , Fuzzy Conversions

July Lunchtime 2019 Division 1 (Unrated)

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

January Lunchtime 2020 Division 1

Minimum and Maximum, Under the Tunnels

March Lunchtime 2020 Division 1 (Unrated)

Maximize LCM, Strip in a Tree!, Nested Rotation

Problems Authored (10)

Problems Tested (0)

No Contribution

Editorials Contributed (9)