Md. Rumman Mahmud

• Username: 4★rumman13
• 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: 16

Current Ratings Graph Old Ratings Graph

1979 (-3)RatingProvisional
Rating i Provisional Rating, click to know more

August Cook-Off 2017(2017-08-21 00:00:00)

Global Rank:   481

Cheated in:   

Ratings System Update

(2017-08-21 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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1979 (+3)RatingProvisional
Rating i Provisional Rating, click to know more

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

Global Rank:   481

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 (16)

March Challenge 2013

Approximately, Fire Escape Routes, Minesweeper, Tourist Translations

March Cook-off 2013

The Ball And Cups, Palindrome

April Challenge 2013

Barcelona Gameplay Tactics, Maximum Weight Difference, Levy Conjecture

May Challenge 2013

Matchsticks, Witua and Math, Password Cracking Challenge, Name Reduction, Your Name is Mine, Field Trip

October Challenge 2013

Helping Lira, Maxim and Dividers

September Cook-Off 2014, ACM-ICPC Warm up

Sherlock and the Grid, Subarray GCD

October Cook-Off 2014

The Army, Walk on the Axis

March Challenge 2014

Maximum number, GCD condition, A Story with Strings

April Challenge 2014

Counting Matrices, Farmer Feb, Shortest Path in Binary Trees

May Challenge 2014

Little Elephant and Balloons

October Challenge 2015

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

August Cook-Off 2015

Chef and the XORed Number , Chef and the Wildcard Matching

September Mega Cook-Off 2015

Reign 2, Forgotten Language, Super Numbers, Stacks

June Challenge 2017

Pairwise union of sets, Triplets, Xenny and Coin Rankings, Chef and the Feast, A Good Set, Chef and Prime Queries

July Challenge 2017

Chef and Sign Sequences, Pishty and tree, Tree Expectancy, Whats in the Name, Calculator , IPC Trainers, Two Coins

July Cook-Off 2017

Chang and Bitwise OR, Chang and the Perfect Function, Bipartite Graph from Trees

August Cook-Off 2017

Real obtuse, From heaven to earth

Total Problems Solved: 80