Md Mehraj Hossain

• Username: 4★mehrajshakil
• Country:  Bangladesh
• Student/Professional:Student
• Institution:Noakhali Science and Technology University, 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: 34

Current Ratings Graph Old Ratings Graph

1872 (-4)RatingProvisional
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Starters 56 Division 2 (Rated)(2022-09-14 23:00:02)

Global Rank:   531

Cheated in:   

Ratings System Update

(2022-09-14 23:00:02)

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1872 (+9)RatingProvisional
Rating i Provisional Rating, click to know more

Starters 56 Division 2 (Rated)(2022-12-20 00:00:00)

Global Rank:   531

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 (34)

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

August Lunchtime 2020 Division 2

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

October Challenge 2020 Division 1

Positive AND, Replace for X

November Challenge 2020 Division 1

Restore Sequence, Ada and Dishes

January Challenge 2021 Division 2

Fair Elections

October Cook-Off 2020 Division 1

Path-etic Sums

October Lunchtime 2020 Division 1

Chef Likes Good Sequences, Cute Chef Gift

September Cook-Off 2020 Division 2

Bowling Strategy

September Lunchtime 2020 Division 2

GCD operations, Root the Tree, Watermelon

February Challenge 2021 Division 2

Frog Sort, Team Name, Prime Game, Maximise Function, Highest Divisor

March Cook-Off 2021 Division 2

Consecutive Deletions, Matrix XOR, Guess the Number

February Lunchtime 2021 Division 2

Average Sorting, Palpal Strings, Coprime Range

March Challenge 2021 Division 2

Interesting XOR!, College Life 4, Space Arrays

March Lunchtime 2021 Division 2

Dinner by Candlelight, Racing, Lunchtime

April Cook-Off 2021 Division 2

OR of ANDs, Chocolate Monger

April Lunchtime 2021 Division 2

Chef in Heaven , Bench Press, Array Rotation

May Cook-Off 2021 Division 2

The Last Problem, Chef and Subarrays

May Lunchtime 2021 Division 2

Charges, Tom And Jerry 1, Total Components

June Cook-Off 2021 Division 2

The Wave

June Lunchtime 2021 Division 2

False Number, Unpleasant Ones

July Challenge 2021 Division 2 (Unrated)

XxOoRr, Chef vs Bharat, Optimal Denomination, K Path Query

July Cook-Off 2021 Division 2

XOR-ORED, Mod Equality

July Lunchtime 2021 Division 2

Beautiful Pairs, Array Rotation Returns

August Challenge 2021 Division 2 (Unrated)

Special Triplets, Array Filling

August Lunchtime 2021 Division 2

K-th Maximum, Crossing Blocks, Just a Graph

CodeChef Starters 10 Division 2 (Rated)

Magical Flips, Maximise the Subsequence Sum, Remove One Element

SnackDown 2021 - Online Qualifiers

Lucky Number, Maximum Number Of Distinct Elements

October Challenge 2021 Division 1 (Unrated)

Longest AND Subarray, Digit Removal, MEX-OR

SnackDown 2021 - Online Round 1A

Round Robin Ranks , Dance Moves, Min Max LCM

SnackDown 2021 - Online Round 1B

Queens Placement , Largest Laddu, Help Nishant

March Long One 2022, Division 2 (Unrated)

Akash and Function, Substring of a Substring, Exact Marks, MEX on Trees

CodeChef Starters 29 Division 2 (Rated)

String protocol, Plusle and Minun on Array, Decomposition Reaction

March Cook-Off 2022 Division 1

Alternating Divisibility

CodeChef Starters 32 Division 2 (Rated)

Maximize the Minimum, Finding Shoes, Training Plans, Flip Sorting

April Long One 2022 Division 1 (Unrated)

Dazzling GCD Pair

July Cook-Off 2022 Division 2 (Rated)

Permutation And Median, Xor Permutation

June Cook-Off 2022 Division 1 (Rated)

Simple XOR, Split AND Sum

June Lunchtime 2022 Division 1 (Rated)

XOR Times 2 Is Sum, Minimum Xor On Segment

Starters 53 Division 2 (Rated)

Make A and B equal

Starters 56 Division 2 (Rated)

K-Subarrays, Maximize Colours

Total Problems Solved: 148