Harsh Wardhan

Practice: 

Marbles, Bytelandian gold coins, Paying up, Closing the Tweets, Racing Horses, Pizza Delivery, Subtraction Game 2, Chef and Frogs, Sherlock and the Grid, XOR with Subset, Delivery Man, Count Subarrays, Alternating subarray prefix, Chef got Recipes, Snakes, Mongooses and the Ultimate Election, Chef and Eid, Ada School, Life Limited, Fancy Quotes, Distances, Art of Balance, Bathwater, Breaking Good, Chef and Secret Password, Chef and a Beautiful Digit, Max Toys, Minimum Sum, Chefina and Ranges, Reverse Maximisation, Yeh PUBG waala hai kya, Gaithonde owns a new home, Plus Multiply, Binary XOR, Weird Modulo Problem , Easy Subsequence Selection, Amplification, Gilfoyle Vs Dinesh, Oh My Hats, Tom and Jerry, (Challenge) Cubical Virus, That Is My Score!, Addition, Telephone Network, Expected Area, Mean Problem, Safe Robots, Profitable Paths, Chefina and Sums, Secret Mission, Escape the Tree , Strip in a Tree!, Tower Counting, Triangle Query, Absolute Min Max, Square Submatrices, Permutation Xor, Array operations, XOR Times 2 Is Sum, Subsequence LCM, Remove Numbers, Mode!, Prefix Max, One or All

Past ZCO Problems: 

Tournament, Video Game, Smart Phone, Variation

February Challenge 2019 Division 2: 

Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, Deputy Chef

February Cook-Off 2019 Division 2: 

Buying New Tablet, Chef and Party

March Challenge 2019 Division 2: 

Chef and Number Game

March Lunchtime 2019 Division 2: 

Testing Robot, Pogo Stick Competition

Coders' Legacy 2019 (Rated for all): 

IPL and RCB

April Challenge 2019 Division 2: 

Friend or Girlfriend, Maximum Remaining, Fencing

May Challenge 2019 Division 2: 

Matches, Reduce to One, Where to Build the Roads

May Cook-Off 2019 Division 2: 

Chain Reaction, Misha and Nice Sets, Recover the Sequence

May Lunchtime 2019 Division 2 (Unrated): 

Dummy Palindromic Strings, Grid Tour, CV

June Challenge 2019 Division 2: 

Road Signs, Chef and Proxy, Lent Money, Guddu on a Date, Chef and Ingredients, Sum and GCD

June Cook-Off 2019 Division 1: 

Ants and Anteaters, Drink Slush

July Challenge 2019 Division 2: 

Guess the Prime!, Parity Again, Minimum and Maximum, Chef and Mean

July Cook-Off 2019 Division 1: 

Birthday Gift Again

August Challenge 2019 Division 1: 

Guddu and his Mother, Encoding, Dilemma, Maximize an Expression

August Cook-Off 2019 Division 1: 

Two Circles

September Challenge 2019 Division 1: 

Biladerim Icin, Fuzzy Linear Combinations, Chef Designed a Network

October Mega Cook-Off 2019 Division 1: 

D-Or

October Lunchtime 2019 Division 1 (Unrated): 

Box Game

November Lunchtime 2019 Division 1: 

Planting Trees, Washing Windows, Perfection

December Cook-Off 2019 Division 1: 

Xor It

Null Void: 

Chef and Travel, Chef and Chess, The Travelling Students

January Challenge 2020 Division 1: 

Chef and Dynamo, Doraemon, Doofish Matrix, Chefina and Prefix Suffix Sums, English, Chefland Army, (Challenge) Building Anthills

February Challenge 2020 Division 1: 

Chef and Railway Stations, Expected Change, No Change Required, (Challenge) Raisins, Long Contest and Cook Off Overlaps

March Challenge 2020 Division 1: 

Lasers Everywhere

April Challenge 2020 Division 1: 

Strange Number, Squared Subsequences, Ready Bitwise, Leaked Answers (Challenge)

Fall for Code 1.0: 

Shadow and Love, Walk on Mars, Chef and Donation

Try This One: 

Help Sherlock Holmes, Lets Help Atom, Modified Bubble Sort

January Cook-Off 2020 Division 1 : 

Range AND

February Cook-Off 2020 Division 1: 

Must Be Divisible, XOR Game

March Cook-Off 2020 Division 1 : 

Mysterious Sequence, Maximize Letter Beauty, Random Chocolates

April Cook-Off 2020 Division 1 : 

Simple Operations

May Cook-Off 2020 Division 1: 

Chef, Chefina and Their Friendship, Chefina on a Trip, Roads in Chefland

January Lunchtime 2020 Division 1: 

Construct Array, Under the Tunnels, Folding Paper

February Lunchtime 2020 Division 1: 

Swapping to Palindrome

March Lunchtime 2020 Division 1 (Unrated): 

Maximize LCM

April Lunchtime 2020 Division 1: 

Positive Mex

May Lunchtime 2020 Division 1: 

Escape One, Convert the String, Tree difference

Keteki PowerMatch 2: 

Ketu and Petu, Ketekon and Chips

CODIGO Wildcard Round: 

AVERAGE AGE, MAKING FRIENDS

NPL Qualifier 2019: 

Divide and Rule, Bharath and his strings

Encoding October'19: 

Nuttela in Hyderabad, Help Akash !, RUN, CHEF, RUN !!!, Naruto Run, Debanjan got a Date

BitChef 1.0: 

Chef and Lollipops 2

D'Code Division 1 (Unrated): 

Full Barrier Alchemist, The Promised Land

ICPC Asia-Kharagpur Onsite Mirror Contest 2019: 

Colliding Balls, Awkwardness Minimization, Train or Walk, Maximize Diversity of an Array, Chef and Diamonds

ICPC Asia-Amritapuri Onsite Replay Contest 2019: 

Coloring Intervals, Sufficiently different string, Expected Candies

Shaastra Programming Contest (Open Round): 

So Many Books, So Little Time, For the Benefit of All (yet another version), Of What Holds the Universe

CodeFusion: 

RECURSION LOVE, XOR POWER, DHANANJAY AND CANDIES

ENIGMA - PLINTH'20 LNMIIT (Rated for all): 

Corruption in Freedonia, Gru is Handing Out Bananas, Minion AND Range, Recruit Villagers

Code Sense: 

Snake And Arena, Army and Packets

Code Wars 1.0: 

Troublesome Vijay, Pongal Bunk, Troublesome Harsha, World War Preparation, An AC for you

CodeJam Quark 2020: 

Popping Balloons, Distinct Sums

UWCOI 2020 (Rated for all): 

Button Pairs, Peak Finding

Campus Chapters Contest 1.0: 

Walter and Jesse

June Challenge 2020 Division 1: 

The Tom and Jerry Game!, The Delicious Cake

July Cook-Off 2020 Division 1: 

Even-tual Reduction, OR-thodox Distinction

August Lunchtime 2020 Division 1: 

Game on a Strip, Counting Graphs, Alien Invasion

June Cook-Off 2020 Division 1: 

Per Capita Income, Checkpoints

June Lunchtime 2020 Division 1: 

Maximum AND, Gold Mining, Square Submatrices

RECode 12.0 (Rated for all): 

Chef and String, Chef and Walk, Chef and Rotation, Chef and Subsequences, Chef and Numbers

December Challenge 2020 Division 1: 

Hail XOR, Square Root of LCA Convolution, Calculus, String Operations, Positive Prefixes, Even Pair Sum

December Cook-Off 2020 Division 1 : 

Self-Destructing Strings, Sed Passwords, Circle of Chaos, Carry All Fruits

December Lunchtime 2020 Division 1 (Unrated): 

Even Sequence, Three Letters, One Zero Swaps

January Lunchtime 2021 Division 1 (Unrated): 

Good Grid, Shifting Spoons, Dreams of Divisibility, Even Sum

October Cook-Off 2020 Division 1: 

Path-etic Sums, Yet Another Crossover Episode

November Cook-Off 2020 Division 1: 

Flip the String, Chef and IPC Certificates, Set Queries, Hiring Workers

November Lunchtime 2020 Division 1: 

Gasoline

Code Chronicles 1.0: 

Champak and Clocks, Odd One Out, Marking the Borders, Sharing is Caring!, Chef and a New Home

Lost in Code: 

Distribute Candies, Omi and matrix, Pyramid of string, Ish and String Game, Ish Food Distribution

Biteration #3: 

C - Smallest String, D - Minimum Cost, B - Jumping Monkey, A - All Vowels

Coders' Legacy (Rated for all): 

Chef vs Doof, Doof on Cartesian, Doof fires Brackets, Jeremy gets a gift

September Cook-Off 2020 Division 1 : 

Maximise Subsequence Value

February Lunchtime 2021 Division 1: 

Average Sorting, Sed Max, Independent Set

August Cook-Off 2021 Division 1: 

Odd Array

SnackDown 2021 - Online Qualifiers: 

Lucky Number, Maximum Number Of Distinct Elements, Minimise Difference

January Cook-Off 2022 Division 1: 

Subsegment Divisibility , Erase All But One

February Lunchtime 2022 Division 1: 

Chef Cooks Permutation

March Cook-Off 2022 Division 2: 

Fixed Weight, Secret Tree, Janmansh at Fruit Market, Dragonado And XOR, Equal Mex Splitting, Alternating Divisibility

May Cook-Off 2022 Division 2 (Rated): 

Different Subarrays Rearrange, Doubled Distances, Triple Inversions

May Lunchtime 2022 Division 1 (Rated): 

Balanced 0-1 Tree, Equal After And, Rearrange Ranges

July Cook-Off 2022 Division 1 (Rated): 

Partition Queries, Segmentation Fault

June Cook-Off 2022 Division 1 (Rated): 

Throw and Take, Simple XOR, Prefix Suffix Distinct, Split AND Sum

June Lunchtime 2022 Division 1 (Rated): 

The Lost Array, Max Shift After XOR, XOR Times 2 Is Sum, XOR, The Detective

July Lunchtime 2022 Division 1 (Rated): 

Tree Interval Queries, Tree Retrieval, Binary String Happiness, Consecutive XOR, Largest Family

September Lunchtime 2022 Division 1 (Rated) (Based on EJOI): 

Increasing Addition, Remove Numbers, Adjacent Pairs

Starters 62 Division 1 (Rated for 5 & 6 stars): 

Strange BST, Sorted Substrings, Make Multiple, Pythagorean Pair

Starters 63 Division 1 (Rated for 5 & 6 stars): 

Maximize 1s, Count Partitions , Make Length 1, Minimum Absolute Score, Greedy Grid Moves

Starters 72 Division 1 (Rated till 5-Stars): 

Good Arrangement

Starters 75 Division 1 (Rated till 6-Stars): 

Sum of range distinct queries, Chefs Favourite Function, Equal Hamming Distance, Prefix Ones

RECode 25.0: 

The Ancient Tree, Nami and the Golden Bell, Zoro AND Sanji, The Next Pirate, Shanks Test

February Cook-Off 2023 Division 1 (Rated): 

Take Not Less, Alice Potter and OWL, Crazy Row, Alice Potter And Dumbledore Army

Starters 77 Division 1 (Rated till 5 Stars): 

Sort a String, K Forests

Starters 78 Division 1 (Rated till 6 stars): 

Yet Another XOR Sort 2, Divisible Subarray Counting

Clash Wildcard 2023: 

Operator, Lelouch Bombs, Ninja on a Date!, Ahhh, Networks!, Playboy Tony!, Operator 2

Starters 81 Division 1 (Unrated): 

Beautiful Strings, Horde Chess, Unimodal Subsets, Good XOR, Distinct Matrix, Arrange the array, Binary Ternary

Starters 82 Division 1 (Rated till 6 stars): 

Tree Game, Meet over Grid, Find eX, Good Permutations, Difference Matrix

Code Venture : 

Is this Graph, Weird Fibbo, Array Yaar, Crying Child, Fallacy of Wasseypur

Starters 86 Division 1 (Rated for All): 

Trees Are Fun

Starters 87 Division 1 (Rated till 6 Stars): 

OR-XOR, Count the Permutations (always), Checkpoint, Inversions of subsequences, AB plus C

Starters 83 Division 1 (Rated): 

Construct String, Order by XOR, Rotate to Minimum

Starters 88 Division 1 (Rated till 6 Stars): 

Maximum And Or, Chef and Asteroids, Good Operations, Minimize the Bits, Chef and Good Array, Minimum OR Spanning Tree

Codelicious: 

Musklon

Starters 93 Division 1 (Rated for All): 

Positions

Starters 95 Division 1 (Rated till 6 Stars): 

Guess Game

Problems Authored (0)

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Problems Tested (0)

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Editorials Contributed (0)

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