Ioffe Nikita

October Long Contest 2011: 

Dish Distribution, The Great Plain, The Baking Business, Repeated String, Lucky Palin

November Long Contest 2011: 

Chefs new Pet, New Restaurant, The Postal Service

March 2012 Challenge: 

Longest Weird Subsequence, Cosine Partition Function, Lucky Number, Free Shuttle Service, Home Delivery, Spoon in Matrix

April Challenge 2012: 

PDS Number, Lucky Array, Parallel Computing, Fit to Play, Double Strings, Stacking Pancakes, Greatest Dumpling Fight, Similar Graphs

May Challenge 2012: 

Little Elephant and Median, Jewels and Stones, Lucky lucky number, Divisible Pairs, Remember the recipe, A Home for Chef

June Challenge 2012: 

Little Elephant and Product, Little Elephant and Candies, Magic Hull, Doom Bakes Cakes, Arranging Cup-cakes

July Challenge 2012: 

Favourite Numbers, Chef's Dream, My Fair Coins, The Gray-Similar Code, Little Elephant and Bubble Sort, Gift Rift, Restaurant Rating, Addition chains

September Challenge 2012: 

Lights, Kisses & Hugs, Chef World, Racing Horses, Queries About Numbers, ChefTown Parade, Three is Crowd

October Challenge 2012: 

Team Formation, Little Elephant and Order, Fierce Battles, Event Organizer, Maximum Sub-rectangle in Matrix, Blade Master, The New Scheme, Need More Diamonds

November Challenge 2012: 

Lucky Balance, A Wonderful Chocolate, Delicious Dishes, Candy Collecting Game, Coin Flip, Sridhar Likes Travelling

December Challenge 2012: 

Sereja and Data Structures , Granama Recipes, Arigeom Beats, Book Exercises, Magic Rankings, The Uncountable Ways, Pizza Delivery

January Challenge 2013: 

Little Elephant and Alcohol, A New Door, Dividing Products, Hotel Balifornia, The Minimum Number Of Moves, End Of The World, Chef of the Year, Three Different Numbers

February 2013 Challenge: 

Little Elephant and Cards, Buy1-Get1, Triangular Queries, Climbing Stairs, Word Play

March Challenge 2013: 

Peaceful Calculator, Random decreasing function, Tourist Translations, Approximately, Fire Escape Routes

April Challenge 2013: 

Little Elephant and Music, Barcelona Gameplay Tactics, ChefGame, Kingdom Unity, Maximum Weight Difference, Levy Conjecture

October Challenge 2013: 

Little Elephant and Bamboo, Helping Lira, Maxim and Dividers, Sereja and Transformation, CAO Stage-3, Yet Another Nice Girl, Fibonacci Number, Kamehameha

February Challenge 2014: 

Little Elephant and Movies, Draughts, Make Him Happy, Chef and Favourite Sequence, Graph Challenge, Longest Common Pattern, Little Elephant and Subarrays, Colored Array

September Challenge 2015: 

Filling the maze, 3D Queries, Chain of Doughnuts, Nikitosh and xor, Count Steps in Matrix, Bank robbery, Lighthouses, Cracking the Code

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