Noureldin yosri

Practice: 

Marbles, The Best Box, Pricing Tollbooths, Dynamic GCD, The Minimum Number Of Moves, Snape and Ladder, Mountain Holidays, Kamehameha, Lowest Common Ancestor, Physics Class, Chef and Polygons, Chef and Bitwise OR Operation, Plane Division, Maximum Magic Walk, Fibonacci Queries, Asya & Beautiful Strings, Roads in Shinjuku , Fibonacci Equation, LadooLand, Chef and Sad Pairs, Math Hatter, Divide Me Please, Colouring Ways, Add or Multiply, Robots in a DAG, Product on the segment by modulo , K-Concatenation, Maximum Score, Rectangle, Bad Shuffle, Chef Raffle, Maximize an Expression

November Challenge 2015: 

Chef and collection of stamps, Receipt Recovery, Chef and cakes, Eugene and function, Simple Sum

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

September Cook-Off 2016: 

Lazy Jem, The Lost Arithmetic Sequences, Counting Strings

April Challenge 2017: 

Bear and Row 01, Similar Dishes, Bear and Clique Distances, Stable market, Chef and Divisor Tree, Chef and Digits, Dish Of Life

August Long Challenge 2017: 

Greedy Candidates, Strings and Graphs, Palindromic Game, Hill Jumping, Chef and Mover, Chef And Fibonacci Array, Chef and Rainbow Array

November Challenge 2017: 

Chef and Subarray Queries, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes

December Challenge 2017: 

Chef and Hamming Distance of arrays, Red and blue points, Penalty Shoot-out, Chef And his Cake, Total Diamonds, Chef and Universe, Chef And Easy Xor Queries

February Challenge 2018: 

Car-pal Tunnel, Permutation and Palindrome, Points Inside A Polygon, Chef and odd queries, Chef And The Patents, Chef And His Characters, Chef And Land Labeling, Lucas Theorem, Broken Clock

March Challenge 2018 DIV 1: 

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

April Challenge 2018 Division 1: 

Vaibhav and Ministers, Count Good Prefixes, Chef and Same Old Recurrence, Highway Crossing, Chef at the Food Fair, Chef and Array (Challenge), Cutting Plants

January Challenge 2019 Division 1: 

A Pizza Slice, Party, Distinct Pairs, Partition the Graph, Different Neighbours, Yet Another Problem About Sequences

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

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