Prafull Varshney

July Cook-Off 2019 Division 2

Playing with Strings

July Lunchtime 2019 Division 2

Easy Math

August Challenge 2019 Division 2

Dilemma, Maximize an Expression, Football, Distribute Apples, Zombie and the Caves

October Challenge 2019 Division 2

Array Modification, Operations on a Matrix, Phone Prices

November Challenge 2019 Division 2

Hard Sequence, Weapon Value

December Challenge 2019 Division 2

Plus Multiply, That Is My Score!, Addition

December Lunchtime 2019 Division 2

Stupid Machine, Check Algorithm

January Challenge 2020 Division 2

Chef and Dynamo, Equality, Breaking Bricks

February Challenge 2020 Division 2

No Change Required, The Theatre Problem, School of Geometry, Hard Cash, Long Contest and Cook Off Overlaps

April Challenge 2020 Division 1

Strange Number, Squared Subsequences, Ready Bitwise, Unit GCD, Sell All the Cars, Leaked Answers (Challenge), COVID Pandemic and Long Queue

May Challenge 2020 Division 2

Triple Sort, Coronavirus Spread, Chef and Bitwise Product, Isolation Centers

January Cook-Off 2020 Division 2

Chef Chick, Exam Cheating

February Cook-Off 2020 Division 2

XOR Game, Penalty Shoot-Out II, Tax Slabs

March Cook-Off 2020 Division 1

Mysterious Sequence, Escape the Tree

May Cook-Off 2020 Division 1

Roads in Chefland

January Lunchtime 2020 Division 2

Bob and His Friends, Chef and Street Food

June Challenge 2020 Division 1

The Tom and Jerry Game!

July Challenge 2020 Division 1

Chefina and Swaps, Missing a Point, Doctor Chef

August Challenge 2020 Division 2

Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess, Smallest KMP

September Challenge 2020 Division 2

Chefina and Swap, A Problem on Sticks, Chef and Trump Cards, Find XOR, Ada Matrix, Coronavirus Spread 2

July Cook-Off 2020 Division 1

Even-tual Reduction, OR-thodox Distinction

July Lunchtime 2020 Division 2

Chef and Steps

August Cook-Off 2020 Division 1

Polygon Relationship

August Lunchtime 2020 Division 2

Game on a Strip, Mode of Frequencies, Ratings and Rankings

June Cook-Off 2020 Division 2

Cache Hits, Max Mex

June Lunchtime 2020 Division 2

Maximum AND, Chef and Demonetisation, Increasing Decreasing, Gold Mining

RECode 12.0 (Rated for all)

Chef and String, Chef and Numbers

October Challenge 2020 Division 1

Inversions, Positive AND, Replace for X, Adding Squares

November Challenge 2020 Division 2

Restore Sequence, Ada and Dishes, Magical Candy Store, Iron, Magnet and Wall

January Challenge 2021 Division 2

Fair Elections

December Challenge 2020 Division 1

Hail XOR, Positive Prefixes, Even Pair Sum

December Cook-Off 2020 Division 1

Self-Destructing Strings, Circle of Chaos

January Cook-Off 2021 Division 2

Prime Tuples, Maximise Islands

December Lunchtime 2020 Division 1 (Unrated)

Three Letters, One Zero Swaps

January Lunchtime 2021 Division 2 (Unrated)

Good Grid, Dreams of Divisibility, Binary Subsequence, Even Differences, Even Sum

October Cook-Off 2020 Division 1

Path-etic Sums

November Cook-Off 2020 Division 1

Flip the String, Chef and IPC Certificates, Hiring Workers

November Lunchtime 2020 Division 1

Gasoline

Coders' Legacy (Rated for all)

Chef vs Doof, Doof on Cartesian, Doof fires Brackets

September Cook-Off 2020 Division 1

Maximise Subsequence Value

September Lunchtime 2020 Division 1

Root the Tree

Code Ensemble (Rated for Division 2)

Cherry and Bits, Priya and AND, Help Martha

InfInITy 2k20 Division 2 (Rated)

The One Who Knocks!

UWCOI 2021 (Rated for all)

Array Swaps, Hidden Numbers

March Cook-Off 2021 Division 2

Consecutive Deletions, Matrix XOR, Guess the Number

March Lunchtime 2021 Division 2

Dinner by Candlelight, Racing, Lunchtime

International Coding Marathon 2021 Division 2 (Rated)

Suffix Sort, Lucky Boundaries

April Cook-Off 2021 Division 2

OR of ANDs, Chocolate Monger

April Lunchtime 2021 Division 2

A Special Tree, Chef in Heaven , Bench Press, Array Rotation

May Cook-Off 2021 Division 2

The Last Problem, Double Burgers

May Lunchtime 2021 Division 2

Charges, Tom And Jerry 1, Total Components

May Challenge 2021 Division 2 (Rated)

Tree House, Xor Equality, Tic Tac Toe

June Cook-Off 2021 Division 2

The Wave

June Lunchtime 2021 Division 2

From Rational to Binary, False Number, Unpleasant Ones, Tic Tac Toe

July Cook-Off 2021 Division 2

Beautiful Subsequence, XOR-ORED, Mod Equality, Hidden Colored Graph

August Cook-Off 2021 Division 1

Odd Array, Different String, Clear the Array

September Cook-Off 2021 Division 1

Fake Swaps

SnackDown 2021 - Online Qualifiers

Lucky Number, Maximum Number Of Distinct Elements, Minimise Difference

September Lunchtime 2021 Division 2

Interesting Representation, Balanced and Unique Arrays, Alice vs Bob Faceoff, Yet another SOD problem

SnackDown 2021 - Online Round 1A

Round Robin Ranks , Dance Moves, Equal Beauty, Min Max LCM

November Challenge 2021 Division 1 (Unrated)

Weird Palindrome Making, Hill Sequence

Problems Authored (6)

Problems Tested (0)

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Editorials Contributed (2)