Md. Al- Amin

• Username: 4★alamin_sust
• Country:  Bangladesh
• Student/Professional:Student
• Institution:Shahjalal University of Science & Technology 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: 42

Current Ratings Graph Old Ratings Graph

1975 (+15)RatingProvisional
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November Challenge 2019 Division 2(2019-11-11 15:00:02)

Global Rank:   433

Cheated in:   

Ratings System Update

(2019-11-11 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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1975 (+158)RatingProvisional
Rating i Provisional Rating, click to know more

November Challenge 2019 Division 2(2022-12-20 00:00:00)

Global Rank:   433

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 (42)

May Challenge 2013

Matchsticks, Name Reduction, Your Name is Mine

June Challenge 2013

Little Elephant and Mouses, Dessert Wizard, Predictopus, W String, Lapindromes

May Cook-off 2013

Subtraction Game 1

June Cook-Off 2013

Attic Crossing

July Challenge 2013

Chef and Walking on the rectangle

May Cook-Off 2014

Divide the Cake, Ups and Downs

September Cook-Off 2014, ACM-ICPC Warm up

Sherlock and the Grid, Subarray GCD

October Cook-Off 2014

The Army, Walk on the Axis

July Challenge 2014

Chef and Frogs, Chef and Rectangle Genome, Count Substrings, Reach The Point, Dish Owner

August Challenge 2014

Cleaning Tables

November Challenge 2014

Chef and Segment Game, Distinct Characters Subsequence, Chef and Red Black Tree, Let us construct palindrome

December Challenge 2014

Alok-nath and His Sanskars, XOR with Subset, Chef and Apple Trees

April LunchTime 2014

Knight Fork

October Lunchtime 2014

Tanu and Head-bob, Cascading Style Sheets

January Challenge 2015

Sereja and Number Division 2, Chef and A Large Permutation, Chef and Stones, Sereja and Votes, One Dimensional Kingdoms, Gcd Queries

February Challenge 2015

Chef and Chain, Chef and Strange Formula, Chef and Strings, Let us play with rank list, Chef and Equality

April Challenge 2015

Chef and Interview, Broken Telephone, Chef and Piano Scales

May Challenge 2015

Chef and new recipe

July Challenge 2015

Bread, Na2a and lucky stone, Chef and Cube

August Challenge 2015

Way Out, Gravity Guy, Cooking Machine, Aditi and Magic Trick

October Challenge 2015

Time measure, Count Subarrays, Who dares to be a millionaire, Rupsa and Equilateral Triangle

December Challenge 2015

Chef and the stones, Oracle Devu and Longest Common Subsequence, Chef and Filters

December Cook-Off 2015

Chef and Subarrays

September Lunchtime 2015

Sum of palindromic numbers

October Lunchtime 2015

emitL

May Challenge 2016

Chef and math, Chef and Balls, Forest Gathering, Chef and Big Soccer, Laddu

June Challenge 2016

Chef And The Hiring Event, Chef and Rectangle Array, Chef and Array and K, Chef And Binary Operation, Chef and Coins Game, Devu and an Array

January Cook-Off 2016

Chef and Destruction, Chef and Fruits

June Cook-Off 2016

Sticks, Right Triangle

August Cook-Off 2016

Tweedle-Dee and Tweedle-Dum

June Lunchtime 2016

Collisions, One more weird game, Square in numbers

August Cook-Off 2017

Real obtuse, From heaven to earth

July Lunchtime 2017

Find the Maximum Value

August Lunchtime 2017

Mathison and the Dynamo shuffle, Mathison and pangrams

January Cook-Off 2018

Survive in ChocoLand

January Lunchtime 2018

Chef and Game with Sequence, Chef and Escaping from the Labyrinth

February Challenge 2018

Chef And His Characters, Chef And The Patents, Akanksha and End of Semester, Car-pal Tunnel, (Challenge) Biased Committee, Permutation and Palindrome

February Cook-Off 2018

Chef and Cook-Off, Chef and Tuples, Chef and Line

March Challenge 2018 DIV 1

Pishty and Triangles, Chef and Easy Problem, Mix the Colors, Minions and Voting

April Cook-Off 2019 Division 1

Pied Piper vs Hooli

April Lunchtime 2019 Division 1

Minimum Sum

November Challenge 2019 Division 2

Physical Exercise, Hard Sequence, Weapon Value, Chef and Minimum Colouring

Total Problems Solved: 131