Md. Nahidul Islam

• Username: 4★underspirit
• Country:  Bangladesh
• Student/Professional:Student
• Institution:Jahangirnagar University Dhaka, Bangladesh
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

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

Rating Graph

No. of Contests Participated: 23

Current Ratings Graph Old Ratings Graph

1859 (+29)RatingProvisional
Rating i Provisional Rating, click to know more

September Cook-Off 2017(2017-09-18 00:00:00)

Global Rank:   411

Cheated in:   

Ratings System Update

(2017-09-18 00:00:00)

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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1859 (-30)RatingProvisional
Rating i Provisional Rating, click to know more

September Cook-Off 2017(2022-12-20 00:00:00)

Global Rank:   411

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 (23)

January Challenge 2014

Please like me, Chef and Feedback, Bon Appetit

January Cook-off 2014

Chef and the Cake I

March Cook-Off 2014

Dividing Stamps

September Cook-Off 2014, ACM-ICPC Warm up

Sherlock and the Grid, Subarray GCD

October Cook-Off 2014

The Army, Walk on the Axis

February Challenge 2014

Little Elephant and Subarrays, Longest Common Pattern, Make Him Happy

March Challenge 2014

Team Split, Walk, Little Chef and Numbers

October Lunchtime 2014

Tanu and Head-bob

February Cook-Off 2015

Fit Squares in Triangle, Strategy for the World Cup

March Cook-Off 2015

How to Minimize a String, How to Repaint a Fence

September Mega Cook-Off 2015

Forgotten Language, Stacks, Super Numbers

November Cook-Off 2015

Sereja and Line, Sereja and Array and Subtracting

December Cook-Off 2015

Chef and Subarrays

February Cook-Off 2016

Puppy and Sum

April Cook-Off 2016

Movie Weekend, Odd Divisors

May Cook-Off 2016

Phantasialand

August Cook-Off 2016

Tweedle-Dee and Tweedle-Dum

September Cook-Off 2016

Lazy Jem, The Lost Arithmetic Sequences

October Cook-Off 2016

Sherlock and the Ugly Flower, Watson asks Does Permutation Exist, ChefWatson uses Social Network

June Cook-Off 2017

Ada and crayons, SnackUp

September Cook-Off 2017

Infinite OR Game, Statistics Construction, Subsequence Equality

Total Problems Solved: 49