Abdullah Al Nayem

• Username: 2★blacknerd
• Country:  Bangladesh
• Student/Professional:Student
• Institution:Leading University, Sylhet Bangladesh
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

Last 6 Months 2025 (Jul-Dec)2025 (Jan-Jun)2024 (Jul-Dec)2024 (Jan-Jun)

Rating Graph

No. of Contests Participated: 31

Current Ratings Graph Old Ratings Graph

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January Challenge 2021 Division 2(2021-01-11 15:00:02)

Global Rank:   3977

Cheated in:   

Ratings System Update

(2021-01-11 15:00:02)

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

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1523 (-107)RatingProvisional
Rating i Provisional Rating, click to know more

January Challenge 2021 Division 2(2022-12-20 00:00:00)

Global Rank:   3977

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)

April Challenge 2019 Division 2

Maximum Remaining, Friend or Girlfriend

April Cook-Off 2019 Division 2

Chef Learning Hungarian Algorithm, Making a Meal

April Lunchtime 2019 Division 2

Attendance, Fast Food

May Challenge 2019 Division 2

Reduce to One

June Challenge 2019 Division 2

Chef and Proxy, Guddu on a Date

June Cook-Off 2019 Division 2

Multiple Choice Exam, Eat Twice

July Challenge 2019 Division 2

Minimum and Maximum, Chef and Mean

July Cook-Off 2019 Division 2

Playing with Strings, Two Variables

July Lunchtime 2019 Division 2

Easy Math

August Challenge 2019 Division 2

Distribute Apples, Zombie and the Caves, Dilemma, Guddu and his Mother, Football

August Cook-Off 2019 Division 2

Chef and Pepperoni Pizza, Chef Drinks Coke

September Challenge 2019 Division 2

Easy Fibonacci

October Challenge 2019 Division 2

Operations on a Matrix, Phone Prices, Array Modification, Chef and Maximum Star Value, Even Edges

November Challenge 2019 Division 2

Hard Sequence, Weapon Value, Chef and Minimum Colouring

November Cook-Off 2019 Division 2

Chef Diet

December Challenge 2019 Division 2

Addition, That Is My Score!, Sticky Notes, Easy Subsequence Selection, Plus Multiply, Chefina and Ranges, Binary XOR

June Challenge 2020 Division 2

Even Matrix, The Tom and Jerry Game!, Chef and Icecream, Chef and String, Chef and Price Control

July Challenge 2020 Division 2

Chef and Dragon Dens, Chef and Strings, Chef and Card Game, Missing a Point, Chefina and Swaps, Ada King

August Challenge 2020 Division 1

Smallest KMP

June Cook-Off 2020 Division 2

Cache Hits, Per Capita Income, Max Mex

RECode 12.0 (Rated for all)

Chef and String, Chef and Numbers, Chef and Rotation

October Challenge 2020 Division 2

Covid Run, Chef and Easy Queries

November Challenge 2020 Division 2

Restore Sequence, Ada and Dishes

January Challenge 2021 Division 2

Fair Elections

December Challenge 2020 Division 2

Hail XOR, Positive Prefixes, Even Pair Sum, Vaccine Production, Vaccine Distribution

December Cook-Off 2020 Division 2

Self-Destructing Strings, Catch the Thief, Minimum Attendance Requirement

December Lunchtime 2020 Division 2 (Unrated)

Sed Sequences

November Lunchtime 2020 Division 2

Gasoline Introduction

Total Problems Solved: 86