Piyush Kumar

Practice: 

The Next Palindrome, Factorial, Small factorials, Marbles, Stable Marriage Problem, Bytelandian gold coins, Ambiguous Permutations, Enormous Input Test, Sums in a Triangle, Turbo Sort, GCD2, ATM, The Way to a Friends House Is Never Too Long, Life, the Universe, and Everything, A Very Easy Problem!, Paying up, Johnny and the Beanstalk, Prime Palindromes, The Lead Game, Permutation Cycles, Discrepancies in the Voters List, Numbers, Numbers, Numbers, Riled, Reinfected, Modulo, Odd, Stone Game, A Negative Base Problem, Problem 1, Problem 2, Problem 3, Problem 4, Seating Arrangements, Hardware Store, Fibonacci, Yet Another Number Game, Multiples of 3, Cleaning Up, Birthday Candles, Cooling Pies, Pairing Chefs, Holes in the text, Three Way Communications, Maximum Profit, Coloring Trees, Traversing Grid, On The Floor, Internet Media Types, I Spy You, Open the Dragon Scroll, Hotel Bytelandia, Ciel and A-B Problem, Lucky Long, Free Shuttle Service, Word Couting, Count of Maximum, Spoon in Matrix, Fit to Play, Change of base, How many Islands, Double Strings, Ciel Numbers I, Ciel Numbers II, Little Elephant and Strings, Stacking Pancakes, PrimePlusPlus, Mughal Garden, Little Elephant and Alcohol, Little Elephant and Candies, Little Elephant and Blocks, Top Batsmen, Lights, Resistance, A Home for Chef, Little Elephant and Bombs, Lucky Driving, Chef World, Little Elephant and Bubble Sort, Arranging Cup-cakes, Event Organizer, Closing the Tweets, Connecting Soldiers, Block Game, Range of Data, Delivery Boy, Ciel and Receipt, Ciel and Tomya, Maximum Sub-rectangle in Matrix, Queries About Numbers, Three is Crowd, Forced Output, Code Crazy Minions, Dividing Products, Arigeom Beats, Recipe Reconstruction, Carvans, Hotel Balifornia, Little Elephant and Permutations, Little Elephant and Divisors, Subset Sum, Root of the Problem, Packaging Cupcakes, Collecting Magical Berries, Merciless Chef, The Ball And Cups, Traveling Plan, Just Some Permutations 3, Two k-Convex Polygons, Andrew and the Meatballs again, Subtraction Game 1, Chopsticks, A Plus B Again!, Attic Crossing, Sereja and Ballons, Tywins Tactics, Sereja and Sorting, CAO Stage-1, CAO Stage-3, Chef and The Right Triangles, Chef and The Divisibility Queries, Kamehameha, Chef and Favourite Sequence, Knapsack Problem, Coprime Triples, Dynamic Inversion, Present for Andrii, Equality, Version Control System, Devu and friendship testing, Devu and decorating birthday cake, Eugene and function, Simple Sum, Chef and cakes, Triangle Classification, Odd Divisors, Queries on a Binary Tree, Missing a Point

January Cook-Off: 

Collision in Space

February 2012 Challenge: 

Lucky Long, Word Couting, Count of Maximum

March 2012 Challenge: 

Free Shuttle Service, Home Delivery, Spoon in Matrix

ALGOTHIKA 2012: 

Save The Planet, The powerful 2, Factorial Pizza, PrimePlusPlus

March Cook-Off 2012: 

Ciel Numbers I, Ciel Numbers II

April Challenge 2012: 

Fit to Play, Double Strings, Greatest Dumpling Fight

April Cook-Off 2012: 

Top Batsmen, Resistance

May Challenge 2012: 

Jewels and Stones, Lucky lucky number, Remember the recipe, A Home for Chef

May Cook-Off 2012: 

Little Elephant and Strings

June Challenge 2012: 

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

July Challenge 2012: 

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

August Challenge 2012: 

Little Elephant and Bombs, Lucky Driving, Range of Data, Delivery Boy

July Cook-Off 2012: 

Ciel and Receipt, Ciel and Tomya

August Cook-Off 2012: 

Forced Output, Code Crazy Minions

September Challenge 2012: 

Kisses & Hugs, Chef World, Racing Horses, ChefTown Parade, Three is Crowd

October Challenge 2012: 

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

October Cook-Off 2012: 

Buying Sweets, Tennis Tournament

November Challenge 2012: 

Coin Flip, Sridhar Likes Travelling

December Challenge 2012: 

Granama Recipes, Arigeom Beats, Book Exercises, Magic Rankings, The Uncountable Ways, Pizza Delivery, WordNinjas

January Challenge 2013: 

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

January Cook-Off 2013: 

Minimum Distance, Many Chefs

February 2013 Challenge: 

Little Elephant and Cards, Buy1-Get1, Magic Board, Climbing Stairs, Efficient Painting

ACM-ICPC Amritapuri onsite regionals 2012 : Replay: 

Gandalf vs the Balrog, Saruman of Many Colours, The Glittering Caves of Aglarond, The Mirror of Galadriel, Wormtongues Mind

February Cook-Off 2013: 

Lack of Logic, Row and Column Operations

March Challenge 2013: 

Random decreasing function, Tourist Translations, Approximately, Fire Escape Routes, Minesweeper

April Challenge 2013: 

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

May Challenge 2013: 

Matchsticks, Witua and Math, Name Reduction, Your Name is Mine, Field Trip

June Challenge 2013: 

Little Elephant and Mouses, Collecting Magical Berries, Just Some Permutations 3, Dessert Wizard, Two k-Convex Polygons, Predictopus, To challenge or not, W String, Lapindromes

July Challenge 2013: 

Mountain Holidays, Galactik Football, The Probability Of Winning, Chef and Walking on the rectangle , Count K-Primes, Sereja and Sorting, Circle of death

August Challenge 2013: 

Little Elephant and Lemonade, Hello Hello, Save The Princess, The Number Of Solutions, Chef and Segments, Sereja and Ballons, Deleting numbers, Splitting Candies

ByteCode 2013: 

Defuse the bomb

September Challenge 2013: 

Little Elephant and Exams, Merciless Chef, Cool Guys, Chef and Integers , Project Spoon, CAO Stage-1, CAO Stage-2, Sereja and Snake

September Cook-Off 2013: 

Strange Matrix, Game, Code

October Cook-Off 2013: 

Polo the Penguin and the Numbers, Polo the Penguin and the Test

October Challenge 2013: 

Little Elephant and Bamboo, Helping Lira, Maxim and Dividers, Sereja and Transformation, CAO Stage-3, Yet Another Nice Girl, Edit Distance on Grid, Kamehameha

Cryptoss 2013: 

Burnout

Alkhwarism 2013 : 

Divide And Rule, Help Ragetti

November Challenge 2013: 

Chef Game, Superpowers of 2, Yet Another Cute Girl, Sereja and Vectors, Uncle Johny, Square Digit Squares, Missing some chairs

December Challenge 2013: 

Cube Cakes, Chef and Codes, Funny Marbles, Magic Pairs, Reign, Rectangular Queries

December Lunchtime 2013: 

Mike and Matrices

January Challenge 2014: 

Magic Trick, Sereja and Graph, Bon Appetit, Please like me, Chef and Feedback

May Cook-Off 2014: 

Book Game with Chef, Divide the Cake, Ups and Downs

October Cook-Off 2014: 

The Army, Walk on the Axis, Mahesh and his lost array

February Challenge 2014: 

Little Elephant and Movies, Draughts, Make Him Happy, Chef and Favourite Sequence, Longest Common Pattern, Little Elephant and Subarrays, Colored Array, Make It Zero 2

May Challenge 2014: 

Little Elephant and Balloons, Sereja and Game, Compilers and parsers, Chef-jumping, Chef and Strange Matrix, Stone

June Challenge 2014: 

Little Elephant and Blocks, Maxim and Progressions, Chef and Functions, Chef and Digit Jumps, Chef and Subarray, Guessing Game, Forgot Password

July Challenge 2014: 

Little Elephant and Painting, Garden Game, Chef and Frogs, Chef and Rectangle Genome, Count Substrings, Reach The Point, Dish Owner, Lucky Game, Game of Numbers

August Challenge 2014: 

Mountain Holidays 2, Sereja and Shuffling, Little Elephant and T-Shirts, Chef and Reversing, Team Sigma and Fibonacci, The Leaking Robot, Earthquake, Cleaning Tables, Chef and Gift

September Challenge 2014: 

Factorisation, Sereja and Bubble Sort, Chef and Rainbow Array - 2, Chef and Swaps, Chef and Left-Right, Chef and sequence, Fun with Rotation, Flooring

November Challenge 2014: 

Chef and Segment Game, Chef and Words, Fombinatorial, Distinct Characters Subsequence, Chef and Red Black Tree, Let us construct palindrome

December Challenge 2014: 

Chef Under Pressure, Chef and Bracket-Pairs, XOR with Subset, Chef and Apple Trees

CodeX 2014: 

Sum Up, Willy Wonka and Candies, Subset Sum, The Escape, GCD Sum

July Lunchtime 2014: 

And Operation, Shift The String

January Challenge 2015: 

Queries on the String, Sereja and Number Division 2, Chef and A Large Permutation, Chef and Stones, Sereja and Votes, One Dimensional Kingdoms, Gcd Queries

March Challenge 2015: 

Count Substrings, Chef and Notebooks, Devu and his Class, Sign Wave, Matrix

May Challenge 2015: 

Devu and binary String, Chef and Prime Divisors, Set Difference , Chef and new recipe

June Challenge 2015: 

Sereja and Matrix Division, Steady tables, Chef and His Friend, Chef and Memory Limit, Chef and Polygons, Anticommutative implication, Chef and String

July Challenge 2015: 

Addition and Multiplication, Bread, MasterChef, Na2a and lucky stone, Chef and Cube

August Challenge 2015: 

Way Out, Gravity Guy, Cooking Machine, Aditi and Magic Trick

September Challenge 2015: 

Chain of Doughnuts, Count Steps in Matrix, Bank robbery, Lighthouses

December Challenge 2015: 

Chef and the stones, Plane Division, Oracle Devu and Longest Common Subsequence, Chef and Filters

December Cook-Off 2015: 

Chef and Subarrays

September Lunchtime 2015: 

Sum of palindromic numbers

CodeVaitam: 

Easy Mathematics , Strings vs Integers, Story of Berland, Robin and Gold coins, Unlucky Gambler, Chef and Daughter

January Long Challenge 2016: 

Sereja and Salesman, Chef and Inflation, Rupsa and the Game, Churu and Balls, Chef and Making Triples, Cyclist Race, Chef and Time Machine, Devu and Perfume

September Challenge 2016: 

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

October Challenge 2016: 

Chef and Keyboard, Chef and Three Dogs

December Challenge 2016: 

Train Partner, Kth Max Subarray, Kirito in labyrinth, Edit Distance Revisited, Roses for Alexey, Our Base is Under Attack

April Challenge 2017: 

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

May Challenge 2017: 

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

July Challenge 2017: 

Chef and Sign Sequences, Pishty and tree, Tree Expectancy, Whats in the Name, Calculator , IPC Trainers, Two Coins

September Challenge 2018 Division 1: 

AND Square Subsegments, Bad Shuffle

February Challenge 2020 Division 1: 

Expected Change, Long Contest and Cook Off Overlaps

April Challenge 2020 Division 1: 

Strange Number, Squared Subsequences, Ready Bitwise

November Challenge 2020 Division 1: 

Restore Sequence

March Challenge 2021 Division 2: 

Interesting XOR!, College Life 4, Space Arrays

August Challenge 2021 Division 2 (Unrated): 

Problem Difficulties, Olympics Ranking

Problems Authored (17)

Problems Tested (0)

No Contribution

Editorials Contributed (0)

No Contribution