Md.Maruf hossain

• Username: 2★def4ult
• Country:  Bangladesh
• Student/Professional:Student
• Institution:IIT, Jahangirnagar University, Dhaka
• 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: 41

Current Ratings Graph Old Ratings Graph

1529 (+34)RatingProvisional
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Starters 229 (Rated)(2026-03-11 22:00:04)

Global Rank:   612

Cheated in:   

Ratings System Update

(2026-03-11 22:00:04)

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1229 (+0)RatingProvisional
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Starters 69 Division 4 (Rated)(2022-12-20 00:00:00)

Global Rank:   1108

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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Contests (41)

August Long 2022 Division 4 (Rated)

Sale Season, Maximum Submissions, Make A and B equal

Starters 64 Division 4 (Rated)

Mario and the Broken String, Distinct Colors, Water Consumption

November Long 2022 Division 4 (Rated)

Time Complexity, Water Mixing

Starters 67 Division 4 (Rated)

Minimum Number of Ones, Tour of King

Starters 68 Division 4 (Rated)

Expense List, Bull or Bear, Make AP

Starters 69 Division 4 (Rated)

Rain in Chefland, Scalene Triangle, Convert to permutation

Starters 70 Division 4 (Rated)

Kitchen Timings, Spice Level, Cost of Groceries, Prime Reversal

Starters 71 Division 4 (Rated)

Instagram, Snapchat, Perfect Trio

Starters 73 Division 4 (Rated)

Chef Plays Ludo, Multivitamin Tablets, Lucky Numbers

Starters 86 Division 4 (Rated)

Cricket Match, Chef and Battery , CodeChef Learn Problem Solving

Starters 89 Division 4 (Rated)

Monopoly, Plus 2 or Minus 1, Parliament, DDMM or MMDD

Starters 90 Division 4 (Rated)

Learning SQL, Printing Binary Array, Favourite Numbers

Starters 96 Division 4 (Rated)

Remove Multiples, Bells of Pilgrimage, AB Difference

Starters 97 Division 4 (Rated)

Caesar Cipher, Schrodinger Smiley, 2000, Best of Two

Starters 99 Division 3 (Rated)

Card Swipe, Endless Appetizers, Exclusion-Inclusion

Starters 105 Division 3 (Rated)

Dracula Eats

Starters 135 Division 4 (Rated)

Invert And Equalize, Football Ties, RCB vs CSK

Starters 137 Division 3 (Rated)

Spell Splice

Starters 138 Division 3 (Rated)

Heat Wave, Long Drive

Starters 140 Division 4 (Rated)

Make Permutation, Split Permutation, Yoga Day, Yoga Class

Starters 141 Division 3 (Rated)

Redundant Array, Nearly Equal

Starters 145 Division 3 (Rated)

Gun Master, Make My Array Equal

Starters 146 Division 3 (Rated till 5 stars)

Permutation Construction, Knockout tournament, No Winner

Starters 148 Division 3 (Rated)

Let Me Eat Cake!

Starters 155 (Rated)

Chef and Parole, GCD to 1 (Easy), GCD to 1 (Hard), Rectangled

Starters 158 (Rated)

Even vs Odd Divisors

Starters 161 (Rated)

Moneymaking, Selling Donuts, Two Cards

Starters 165 (Rated)

Poster Perimeter, Bulk Discount

Starters 178 (Rated)

Food Balance

Starters 181 (Rated)

Find Outside Array, Move Grid, Breaking Sticks

Starters 183 (Rated)

Larger Smaller, Max Sixers, Max Triangle

Starters 193 (Rated)

Add Permutation, Check Odd Even Divisors, Count Odd Even Divisors, Rectangle and Square

Starters 195 (Rated)

Failing Grades, Marble Collector

Starters 212 (Rated)

Exit Door, Signal

Starters 221 (Rated)

Odd Operations, Odd String, Winter is Coming

Starters 222 (Rated)

Sell Upto 2, Sorting Prefixes, Candy Types, Layered Cake

Starters 226 (Rated)

Minimum Distinct , Sub A Add B, IceCream Cones

Starters 227 (Rated)

Equal Elements, Erase and Maximize, Buying Tickets, Bank Glitch

Starters 228 (Rated)

Min And Operations, Color Festival, Balloon Smash Party

Starters 229 (Rated)

Sum Not Equal, Sequential Clamp, All Zero

Total Problems Solved: 258