Piotr Mikulski

Practice: 

Prime Generator, Transform the Expression, The Next Palindrome, Factorial, Small factorials, Marbles, Bytelandian gold coins, Enormous Input Test, Sums in a Triangle, Turbo Sort, ATM, The Way to a Friends House Is Never Too Long, Life, the Universe, and Everything, Paying up, XAndOr , Mosaic, Minesweeper Reversed, Chef's Dream, Queries About Numbers, LCP Maximization, Bit Twister on a Tree, Company and Club Hierarchies, Four Friends, Chef And Land Labeling, Doubly Increasing Path, Dream Problem, The Last Droid, Chef Rami and Inventions

September 2009 (Contest VIII): 

Se7en, A Bowling Game, Smart Frog, A Coin Game, Alien language, Chemical reactions, Mosaic

October 2009 (Contest IX): 

Congruent triangles, A puzzle game, Paragraph Formatting, Just a simple sum, Kayaks, Forces in the crystal

November 2009 (Contest X): 

SudokuX, Help the DJ, Magic Strings, Help the judge, The LCS Problem Revisited, The Best Box

March 2010 Contest: 

Treasure Hunting, K-important Strings, Tri-Hexagonal Puzzle

May 2010 Contest: 

Nice Quadrangles, Rendezvous, Summing Slopes

IEM - Kolkata - FESTRONIX - Encoded: 

Developer or Tester, Prime Challenge, On The Floor, Ice-Cream Mania, Jumping Game, Mobius Multiplications, Virus, Sum3

June Long Contest 2011: 

Maximal Score Path, Chef Teams, Attack of the Clones, Restock

July 2011 Long Contest: 

Wireless Network, Large Kitchen, A-E Hash Function, Most Popular Friend

March Challenge 2014: 

Team Split, Walk, Little Chef and Numbers, Mike and Stamps

May Challenge 2014: 

Compilers and parsers, Chef-jumping, Chef and Strange Matrix, Stone

June Challenge 2014: 

Chef and Subarray, Guessing Game, Forgot Password

April LunchTime 2014: 

Minimum Product, Knight Fork

April Cook-Off 2016: 

Movie Weekend, Odd Divisors, Queries on a Binary Tree

Past ZCO Problems: 

Matched Brackets, Wormholes, Matched Brackets 2, Round Table, Tournament, Little Red Riding Hood, Chewing, Save Spaceman Spiff, Video Game, SUPW, Smart Phone, IPL, Break Up, Variation, Covering, Rectangle, Bookshelves, Bamboo Art

Past INOI Problems: 

Triathlon, Table Sum, Calvins Game, Sequence Land, Free ticket

June Challenge 2017: 

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

July Challenge 2017: 

Chef and Sign Sequences, Whats in the Name, Calculator , IPC Trainers

November Challenge 2017: 

Chef Hates Palindromes, Chef and Subarray Queries, Chef goes Left Right Left, 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, Red and blue points, Chef and Hamming Distance of arrays

June Cook-Off 2017: 

Ada and crayons, Knight Covering, A Study in Bake Street, SnackUp, Centeroid

May Lunchtime 2017: 

Prefix Inversions

June Lunchtime 2017: 

Maximum Unique Segment, Two Numbers

December Lunchtime 2017: 

Days in Month, Strange Function, Too Much Sweetness

LoC June 2017: 

Little Chef and Cake, Harry and magical number, Kth Character, Roommate Trouble, The Riddler

January Challenge 2018: 

(Challenge) Chef and Palindromes, Killing Monsters, A humongous Query, Killjee and k-th letter , K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers

ICO 2018 Preparatory Series - Contest 6: 

Partition Count, Anupam and Raja, Minimum Maximum Partition

February Challenge 2018: 

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

Turing Cup Qualifier 1: 

Chef Plays A Card Game, Chef Meets Alan Turing

February Cook-Off 2018: 

Chef and Cook-Off, Chef and Tuples, Chef and Chefness, Chef and Line

February Lunchtime 2018: 

Prefix borders, Game with numbers, Jumping in the hills

FreeStyle coding contest: 

LEFT ROTATE, CONVERT TIME, GAME OF ARRAY, GAME OF COUNTERS, PUSSGRC SOUND-SYSTEM INSTALL

March Challenge 2018 DIV 1: 

Pishty and Triangles, Chef and Interval Painting, Chef and Easy Problem, Chef and Gcd Queries, A Big Sale, Mix the Colors, Chef and Glove, Minions and Voting, Minion Chef and Bananas

April Challenge 2018 Division 1: 

Cutting Plants, Highway Crossing, Count Good Prefixes

May Challenge 2018 Division 1: 

Fake Binary Search, Dibs on Fibs

July Challenge 2018 Division 1: 

Reach Equilibrium, No Minimum No Maximum, Gears

February Challenge 2019 Division 1: 

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

March Challenge 2019 Division 1: 

Chef and Soccer, Cheating on Queue, Treasure Hunt, Yet Again a Subarray Problem, Matchable Permutations, (Challenge) Interleaving Strings

April Challenge 2019 Division 1: 

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

April Cook-Off 2019 Division 1: 

Doubly Increasing Path, Random Game, Pied Piper vs Hooli, Mystery Tree, Guess My Age

April Lunchtime 2019 Division 1: 

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

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