potato

Practice: 

Prime Generator, The Next Palindrome, Marbles, Ordering the Soldiers, Bytelandian gold coins, Closing the Tweets, Persistent oak, AND Square Subsegments, Selinas the Chefs Falling on the Tree, Table Game, Bad Shuffle, Even Edges, Bacterial Reproduction, Chef and Maximum Star Value, Array Modification

March Challenge 2015: 

Chef and Notebooks, Sign Wave, Matrix, Count Substrings

May Challenge 2017: 

Chef and Subsequences, Median of adjacent maximum numbers, Blocked websites, Courses in an university, Chef and his daily routine, Gotham PD, Long Sandwich , Chef and Sub Array

June Challenge 2017: 

Chef and Prime Queries, A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets

August Long Challenge 2017: 

Chef and Rainbow Array, Strings and Graphs, Greedy Candidates, Palindromic Game, Walks on the binary tree, Hill Jumping, Chef and Mover, Chef And Fibonacci Array

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: 

(Challenge) Connecting computers, A Balanced Contest, Counter Test For CHEFSUM, Max Mex, Chef and Cycled Cycles, Chef and a great voluntary Program, Chef and Magic Arrays, Shooting on the array

November Challenge 2017: 

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

December Challenge 2017: 

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

November Challenge 2018 Division 1: 

Binary Strings, Magician versus Chef 2, Chef, Primes and Trees (Challenge), Appy Loves One, Chef and Recipes, Good Median

October Challenge 2018 Division 1: 

Appy and Balloons , Minimize Digitsum, Chef and Surprise Chessboard

February Challenge 2019 Division 1: 

(Challenge) Chef with Orchestra in the Kitchen, Maximize the Tax, Art of Balance, Yet Another Tree Problem, Xor Decomposition, Chef and Secret Ingredients, Guess It Right, Manhattan Rectangle

April Challenge 2019 Division 1: 

Offer for Chef, Kira Loves Palindromes, Mininum XOR over Tree, Playing with Numbers, Subtree Removal, Edgy, Moving Rectangles (Challenge), Sonya and Queries

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