kaysar abdullah

• Username: 5★kaysar
• Country:  Bangladesh
• Student/Professional:Student
• Institution:Bangladesh University of Engineering and Technology
• 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: 28

Current Ratings Graph Old Ratings Graph

2030 (+27)RatingProvisional
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April Cook-Off 2016(2016-04-18 00:00:00)

Global Rank:   151

Cheated in:   

Ratings System Update

(2016-04-18 00:00:00)

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2030 (-46)RatingProvisional
Rating i Provisional Rating, click to know more

April Cook-Off 2016(2022-12-20 00:00:00)

Global Rank:   151

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 (28)

January Cook-Off

Collision in Space

February 2012 Challenge

Box and Ball System, Count of Maximum, Word Counting, Lucky Count, Lucky Long

August Challenge 2012

Little Elephant and Bombs, Delivery Boy

October Challenge 2012

Team Formation, Little Elephant and Order, Fierce Battles, Event Organizer, Maximum Sub-rectangle in Matrix, Blade Master, The New Scheme, Need More Diamonds

September Cook-Off 2012

Carvans, Coal Scam, Recipe Reconstruction, Prime Permutations

October Cook-Off 2012

Buying Sweets

November Challenge 2012

Coin Flip, Sridhar Likes Travelling

December Challenge 2012

Sereja and Data Structures , Granama Recipes, Book Exercises, Magic Rankings, The Uncountable Ways, Pizza Delivery

January Cook-Off 2013

Minimum Distance, Many Chefs

February 2013 Challenge

Word Play, Triangular Queries

February Cook-Off 2013

Lack of Logic, Row and Column Operations

March Challenge 2013

Random decreasing function

April Challenge 2013

Little Elephant and Music

April Cook-Off 2013

Andrew and the Meatballs, Andrew and the Strings, Andrew and the Meatballs again

July Cook-off 2013

Chopsticks, A Plus B Again!

September Challenge 2013

Cool Guys, Chef and Integers , Project Spoon

November Challenge 2013

Yet Another Cute Girl

December Cook-off 2013

Chef Goes Through Segments, Chef and Girlfriend

January Cook-off 2014

Chef and the Cake I

February Cook-Off 2014

Chef and Remissness, Chef and Kingship, Chef and Reunion

August Cook-Off 2014

Tree Game

September Cook-Off 2014, ACM-ICPC Warm up

Sherlock and the Grid, Subarray GCD, Subarray LCM

October Cook-Off 2014

The Dirty Path, The Army, Walk on the Axis, Mahesh and his lost array

September Challenge 2014

Chef and sequence

April Cook-Off 2016

Movie Weekend, Odd Divisors, Queries on a Binary Tree

Total Problems Solved: 83