Abdullah Al Mahmud

• Username:6★abdullah500
• Country:  Bangladesh
• Student/Professional:Student
• Institution:Shahjalal University of Science & Technology Sylhet, Bangladesh
• CodeChef Pro Plan: No Active Plan. View Details

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Last 6 Months 2025 (Jan-Jun)2024 (Jul-Dec)2024 (Jan-Jun)

Rating Graph

No. of Contests Participated: 23

Current Ratings Graph Old Ratings Graph

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Starters 173 (Rated upto < 2700)(2025-02-12 22:30:00)

Global Rank:   104

Cheated in:   

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(2025-02-12 22:30:00)

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Starters 68 Division 4 (Rated)(2022-12-20 00:00:00)

Global Rank:   234

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

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Learning Paths (0)

Practice Paths (2)

Rise from 3* to 4*

11%

Jump from 2* to 3*

29%

Contests (23)

Starters 68 Division 4 (Rated)

Expense List, Bull or Bear, Make AP, Make Money, Boring String

Starters 127 Division 3

ABC Conjecture, Superincreasing, Extreme Basketball, Anti-Triangle

Starters 128 Division 2 (Rated)

Binary Substring, XOR And Multiply, MEXimize the Array, Disjoint Non-Decreasing Array

Starters 129 Division 1 (Rated till 5-Stars)

Palindromic Substrings, ConstructXor

Starters 130 Division 1 ( Rated till 6-Stars)

Updating A, Make Equal, Good Binary String

Starters 132 Division 1 (Rated till 6 Stars)

ALIEN-OR, Optimal Flip, MEX QUERIES , Prime Query

Starters 134 Division 1 (Rated till 6-Stars)

Count Good RBS, Origin, 3out1in

Starters 137 Division 1 (Rated till 5-Stars)

Speedrun, Unusual Queries, Double Trouble

Starters 138 Division 1 (Rated till 6-Stars)

A power B mod C , TRIPLE PRIMES, Prefix Suffix Inequality, Breezy Mode Problem, Distinct Substring

Starters 139 Division 1 (Rated till 5-Stars)

Sort Perm, Sum of N, Destroying Bridges Part 2

Starters 140 Division 1 (Rated till 5-Stars)

Break The String, Tree Removal, Trick Or Treat, Split Permutation

Starters 141 Division 1 (Rated till 5-Stars)

Amphibian Escape, Perfect Prefixes

Starters 142 Division 1 (Rated till 5-Stars)

Sum of Xors, Pairs Sum with Length x, Array Removal, Number Hunt

Starters 143 Division 1 (Rated till 5-Stars)

Non-Divisor Array, Max Min and Length

Starters 145 Division 1 (Rated till 6-Stars)

Beautiful Array, Square String, Make Bob Win

Starters 146 Division 1 (Rated till 5 stars)

Back Front, Permutation Construction, Bouncing Ball

Starters 147 Division 1 (Rated till 5 stars)

Truth Teller And Liars 101, Independence Day 101, Non-Primes 101, Gold Coins 101

Starters 149 (Rated till 5 stars)

Kill Monsters (Hard Version), Maximise Sum, Chef Loves Beautiful Strings (Easy Version)

Starters 150 (Rated till 6 stars)

Min Ops (Hard), Replacing Game, Equal Pairs (Hard)

Starters 152 (Rated till 6 stars)

Maximize Hamming Distance, Completion (Easy), Anti-Palindrome Queries

Starters 153 (Rated till 5 stars)

Another Game, Colorful Tree (Easy Version), Xometry (Easy Version), Xometry (Hard Version)

Starters 161 (Rated)

Quick Exit, Red-Blue Sort, One To Three

Starters 166 (Rated till 6 stars)

All Equal, Distinct Power, Divisors Array (Hard Version), Divisors Array (Easy Version), Costly Permutations, Chefland Library

Starters 167 (Rated till 5 stars)

Grid Construction (Even), Grid Construction (Odd), Sum Over Subarrays, Lottery Tickets, Temperature Balance, Alternate Universe

Starters 168 (Rated till 6 stars)

No Two Alike, Binary Removals, Xoperations, Equate XOR

Starters 170 (Rated till 6 star)

Crazy Jumping Frogs, qUiRkY qUesTs (Easy)

Starters 173 (Rated upto < 2700)

Cool Subsequences, Introverts, Cool Checker, Time Penalty, Overwrite

Total Problems Solved: 236