Abrar Hossain

• Username: 4★abr820
• Country:  India
• Student/Professional:Professional
• Organisation:Bidgely Technologies Private Limited
• CodeChef Pro Plan: No Active Plan. View Details

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Last 6 Months 2026 (Jan-Jun)2025 (Jul-Dec)2025 (Jan-Jun)

Rating Graph

No. of Contests Participated: 31

Current Ratings Graph Old Ratings Graph

1868 (-13)RatingProvisional
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Starters 38 Division 2 (Rated)(2022-05-11 23:00:02)

Global Rank:   810

Cheated in:   

Ratings System Update

(2022-05-11 23:00:02)

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1868 (-23)RatingProvisional
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Starters 38 Division 2 (Rated)(2022-12-20 00:00:00)

Global Rank:   810

Cheated in:   

Ratings System Update

(2022-12-20 00:00:00)

This is the difference due to changing the rating system.This graph is not updated after 20th Dec 2022. Know more

How the rating system works?

Learning Paths (0)

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Practice Paths (0)

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Contests (31)

May Cook-Off 2019 Division 2

Chain Reaction, Recover the Sequence

May Lunchtime 2019 Division 2 (Unrated)

CV

June Cook-Off 2019 Division 2

Multiple Choice Exam

June Lunchtime 2019 Division 2

Ping Paja Pong, Magda and Silly Pairs

July Challenge 2019 Division 2

Minimum and Maximum, Chef and Mean

July Cook-Off 2019 Division 2

Playing with Strings

August Challenge 2019 Division 2

Dilemma, Football, Distribute Apples, Zombie and the Caves

August Cook-Off 2019 Division 2

Chef and Pepperoni Pizza, Chef Drinks Coke

August Lunchtime 2019 Division 2

Eidi Gift

September Challenge 2019 Division 2

Easy Fibonacci, Chef Designed a Network, Chef and Interesting Subsequences

September Lunchtime 2019 Division 2

Chef Feeds Cats, Chef and Football Match

October Lunchtime 2019 Division 2

Khaled in HIT, Counting Inversions Revisited

November Challenge 2019 Division 2

Physical Exercise, Hard Sequence, A Simple Game, Weapon Value

December Challenge 2019 Division 2

Plus Multiply, That Is My Score!

February Challenge 2020 Division 2

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

March Challenge 2020 Division 2

XOR Engine, Ada Bishop 2, Pintu and Fruits

April Challenge 2020 Division 2

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

May Challenge 2020 Division 1

Triple Sort, Coronavirus Spread, (Challenge) Nanobots

March Cook-Off 2020 Division 2

Find Your Gift, Box of Chocolates

March Lunchtime 2020 Division 2 (Unrated)

Chef Swaps Digits, Good Prefix

June Challenge 2020 Division 1

The Tom and Jerry Game!

August Challenge 2020 Division 2

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

September Challenge 2020 Division 2

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

August Cook-Off 2020 Division 2

Polygon Relationship, Chef and Work, K-Foldable String

October Challenge 2020 Division 1

Positive AND, Replace for X, Adding Squares

December Challenge 2020 Division 1

Hail XOR, Calculus, Positive Prefixes, Even Pair Sum

May Challenge 2021 Division 2 (Rated)

Valid Paths, Tree House, Xor Equality, Tic Tac Toe, Modular Equation

June Challenge 2021 Division 2 (Unrated)

Minimum Dual Area, Shortest Route, Bitwise Tuples, Bella ciao, Summer Heat

September Challenge 2021 Division 2 (Unrated)

XOR Equal, Shuffling Parities, 2-D Point Meeting, Airline Restrictions, Travel Pass

September Cook-Off 2021 Division 2

Chef and Pairwise Distances, Zebra Crossing, Fake Swaps, Adjacency Hatred

SnackDown 2021 - Online Qualifiers

Lucky Number, Maximum Number Of Distinct Elements, Minimise Difference

September Lunchtime 2021 Division 2

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

SnackDown 2021 - Online Pre-Elimination

Non-Decreasing Subsequence of size K, Product Pain

Starters 38 Division 2 (Rated)

Good Pairs, Average Gift, Circular Track

May Long Two 2022 Division 2 (Unrated)

Xor Palindrome, Make them Zero

Total Problems Solved: 159