Prajwal Singh

April Challenge 2020 Division 2

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

May Challenge 2020 Division 2

Coronavirus Spread, Isolation Centers

March Cook-Off 2020 Division 2

Find Your Gift

April Cook-Off 2020 Division 2

Matrix Decomposition, Lift Requests

May Cook-Off 2020 Division 2

Chef and Recipe, Chef, Chefina and Their Friendship, Roads in Chefland

March Lunchtime 2020 Division 2 (Unrated)

Chef Swaps Digits, Good Prefix

April Lunchtime 2020 Division 2

Chef in Fantasy League

June Challenge 2020 Division 1

The Tom and Jerry Game!, Operations on a Tuple

RECode 12.0 (Rated for all)

Chef and String, Chef and Walk, Chef and Numbers

March Challenge 2021 Division 2

Interesting XOR!, College Life 4, Consecutive Adding, Paparazzi Gennady, Space Arrays

March Lunchtime 2021 Division 2

Dinner by Candlelight, Racing, Lunchtime

April Challenge 2021 Division 2

Binary String MEX, Tree Permutations, Worthy Matrix, Destroy the EMP Chip, Chef and Dice, Boolean Game

International Coding Marathon 2021 Division 2 (Rated)

Suffix Sort, Infinite polygons, Lucky Boundaries

May Lunchtime 2021 Division 1

Total Components

June Cook-Off 2021 Division 2

Too Much Xor, Binary String on Steroids, The Wave

SnackDown 2021 - Online Qualifiers

Lucky Number, Maximum Number Of Distinct Elements

SnackDown 2021 - Online Round 1A

Yet Another Flipping Problem, Round Robin Ranks , Dance Moves, Equal Beauty, Min Max LCM

SnackDown 2021 - Online Pre-Elimination

Product Pain, Guests like slippers

CodeChef Starters 17 Division 1 (Unrated)

Binary Inversion, GCD of Prefixes, String Game, Partition It

December Cook-Off 2021 Division 2

Median Minimization, Musical Chairs, RGB Construction

December Lunchtime 2021 Division 2

Maximum Trio, Optimal Sorting, Romantic Reversals

Infinity 2k21 Division 2 (Rated)

Marbles, Dalgona Treat

January Cook-Off 2022 Division 1

Subsegment Divisibility , Prime Graph

April Cook-Off 2022 Division 1

Chef Goes Shopping

CodeChef Starters 33 Division 2 (Rated)

Max BIT Sum, Stable Mex, Distinct Dilemma, Broken Life, Non Adjacent Flips, Make Them Equal

July Cook-Off 2022 Division 1 (Rated)

Segmentation Fault

Starters 42 Division 1 (Unrated)

Maximise Set Bits , Minimum or Maximum

Starters 43 Division 1 (Unrated)

Array Sorting, Make them Equal, The Optimal Pairs, Permutation AND

July Lunchtime 2022 Division 1 (Rated)

Tree Retrieval, Consecutive XOR, Largest Family

Starters 60 Division 1 (Unrated)

Red Green Grids, Yet Another Palindrome Problem

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

Sorted Substrings, Make Multiple, Pythagorean Pair

Starters 65 Division 1 (Rated for 5 & 6 stars)

Nahaane Jaa, Binod, Gormint Aunty, Potato to Gold

Starters 68 Division 1 (Rated till 5-stars)

Boring String, Interesting Array, Make Money

Starters 70 Division 1 (Rated till 6-stars)

X AND Y Tree, Prime Reversal, Frequency Array Retrieval

Starters 147 Division 1 (Rated till 5 stars)

K Subsequence 101, Truth Teller And Liars 101, Independence Day 101, Non-Primes 101, Gold Coins 101

Starters 149 (Rated till 5 stars)

Kill Monsters (Hard Version), Maximise Sum, Chef Loves Beautiful Strings (Easy Version)

Starters 150 (Rated till 6 stars)

Equal Pairs (Hard), Replacing Game

Starters 152 (Rated till 6 stars)

Completion (Hard), Maximize Hamming Distance, Completion (Easy), Anti-Palindrome Queries

Starters 153 (Rated till 5 stars)

Another Game, Colorful Tree (Easy Version), Xometry (Easy Version), Xometry (Hard Version)

Starters 154 (Rated till 6 stars)

Count Winning Subarrays, GCD and XOR, Triangle Count (Easy)

Starters 156 (Rated till 6 stars)

Balance Difficulties, Partition Score

Starters 168 (Rated till 6 stars)

No Two Alike, Binary Removals, Equate XOR

Starters 169 (Rated till 5 stars)

Hamming equivalent

Problems Authored (3)

Problems Tested (0)

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