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Programming and DSA

Learn to think like a programmer. Develop your problem-solving skills with essential data structures and algorithms.

Career Paths

From beginner to job-ready. Explore our curated career paths designed to help you succeed in the tech industry.

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Programming and DSA

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Catalogue

Programming and DSA

Learn to think like a programmer. Develop your problem-solving skills with essential data structures and algorithms.

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Practice Compete Compiler
Home » Osman Chowdhury
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Osman Chowdhury

  • 4★kimbbakar
  •   Bangladesh
  • Student
  • North South University Dhaka, Bangladesh
  • No Active Plan. View Details

Submissions Heat Map

Rating Graph

No. of Contests Participated: 65
1941 (-14)RatingProvisional
Rating i Provisional Rating, click to know more
January Challenge 2019 Division 2(2019-01-14 15:00:02)
Global Rank:   1655
Cheated in:   

Ratings System Update

(2019-01-14 15:00:02)
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?
1941 (+187)RatingProvisional
Rating i Provisional Rating, click to know more
January Challenge 2019 Division 2(2022-12-20 00:00:00)
Global Rank:   1655
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)

None

Practice Paths (0)

None

Contests (65)

December Challenge 2013

Magic Pairs

January Challenge 2014

Please like me, Chef and Feedback

June Cook-Off 2014

Counting Flags, Painting

July Cook-Off 2014

Copy-Paste, Sum Queries, Friends

September Cook-Off 2014, ACM-ICPC Warm up

Sherlock and the Grid, Subarray GCD

November Cook-Off 2014

Brackets, Petersen Graph

December Cook-Off 2014

Good Joke!

February Challenge 2014

Longest Common Pattern

March Challenge 2014

Walk, Little Chef and Numbers

April Challenge 2014

Farmer Feb, Chef and Digits, Shortest Path in Binary Trees

June Challenge 2014

Chef and Subarray, Guessing Game, Forgot Password

July Challenge 2014

Chef and Frogs, Count Substrings, Reach The Point

August Challenge 2014

Chef and Reversing, The Leaking Robot, Chef and Gift

September Challenge 2014

Chef and Rainbow Array - 2, Chef and Left-Right

October Challenge 2014

Remy paints the fence, Chef and Ground, Magical Girl and Colored Liquid Potions

November Challenge 2014

Chef and Segment Game, Distinct Characters Subsequence, Chef and Red Black Tree, Let us construct palindrome

December Challenge 2014

Alok-nath and His Sanskars, XOR with Subset, Chef and Apple Trees

August Lunchtime 2014

Harrenhal

January Challenge 2015

Chef and Stones, Gcd Queries

February Challenge 2015

Chef and Chain, Chef and Strings, Let us play with rank list, Chef and Equality

March Challenge 2015

Chef and Notebooks

April Challenge 2015

Chef and Interview, Broken Telephone

May Challenge 2015

Devu and binary String, Chef and Prime Divisors, Set Difference , Chef and new recipe

June Challenge 2015

Steady tables, Chef and Memory Limit, Chef and Polygons

July Challenge 2015

Addition and Multiplication, Bread, MasterChef, Na2a and lucky stone, Chef and Cube

August Challenge 2015

Way Out, Gravity Guy, Cooking Machine, Aditi and Magic Trick

September Challenge 2015

Chain of Doughnuts, Nikitosh and xor, Count Steps in Matrix, Lighthouses

October Challenge 2015

Count Subarrays, Who dares to be a millionaire

December Challenge 2015

Chef and the stones, Oracle Devu and Longest Common Subsequence

May Cook-Off 2015

Devu and friendship testing, Devu and decorating birthday cake

September Mega Cook-Off 2015

Forgotten Language, Stacks

December Cook-Off 2015

Chef and Subarrays

January Long Challenge 2016

Rupsa and the Game

April Challenge 2016

Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring

June Challenge 2016

Chef And The Hiring Event, Chef and Array and K, Chef And Binary Operation, Chef and Coins Game, Chef and cities, Devu and an Array

July Challenge 2016

Andrash and Stipendium, Chef and Tetris, Chef and Robots Competition, Chefland and Electricity

August Challenge 2016

Chef and Circle Run, Chef and Chocolate, Chef and Round Run

September Challenge 2016

Chef and Friends, Dividing Machine, Chef and digits of a number, Faded Palindromes, JosephLand, Chef and calculation

December Challenge 2016

Train Partner, Kirito in labyrinth, Our Base is Under Attack

January Cook-Off 2016

Chef and Destruction, Chef and Fruits

March Cook-Off 2016

Digital clock, Alternating subarray prefix

April Cook-Off 2016

Movie Weekend, Odd Divisors

October Cook-Off 2016

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

March Lunchtime 2016

Simple Statistics

January Challenge 2017

Capital Movement, Cats and Dogs, Reservior, Tourists in Mancunia

February Challenge 2017

Eugene and big number, Interval Game, Chef and Triangles, Chef and His Apartment Dues, Most Frequent Element, Gerrymander

March Challenge 2017

Cooking Schedule, Xenny and Alternating Tasks, Bear and Extra Number, Bandwidth of a matrix

January Cook-Off 2017

Digit Longest Increasing Subsequences 2

February Cook-Off 2017

Download file

April Challenge 2017

Chef and Digits, Chef and Divisor Tree, Stable market, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes

May Challenge 2017

Chef and Sub Array , Long Sandwich , Gotham PD, Chef and his daily routine, Courses in an university, Blocked websites, Median of adjacent maximum numbers, Chef and Subsequences

June Challenge 2017

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

July Challenge 2017

Chef and Sign Sequences, Pishty and tree, Whats in the Name, Calculator , IPC Trainers

September Challenge 2017

Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Fill The Matrix, Little Chef and Sums

October Challenge 2017

Chef and a great voluntary Program, Max Mex, A Balanced Contest

December Challenge 2017

Chef and Universe, Total Diamonds, Chef And his Cake, Chef And Easy Xor Queries, Penalty Shoot-out, Chef and Hamming Distance of arrays

July Lunchtime 2017

Find the Maximum Value

January Challenge 2018

K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers

February Challenge 2018

Chef And His Characters, Chef And The Patents, Car-pal Tunnel, Permutation and Palindrome

March Challenge 2018 DIV 2

Pishty and Triangles, Chef and Easy Problem, A Big Sale, Mix the Colors, Chef and Glove, Minions and Voting, Minion Chef and Bananas

March Cook-off 2018 Division 1

Chef Goes to the Cinema, Chef Restores a Matrix

January Challenge 2019 Division 2

Different Neighbours, Lucky Number Game, Distinct Pairs, Chef and Modulo Game, Fancy Quotes

Total Problems Solved: 210

1941
(Div 2)
★★★★
CodeChef Rating (Highest Rating 2041)
  • Inactive Global Rank
  • Inactive Country Rank

Badges

Contest Contender - Gold Badge

Contest Contender - Gold Badge

Received for participating in 50 Contests

Problem Solver - Bronze Badge

Problem Solver - Bronze Badge

Received for solving 50 Problems

Daily Streak - Bronze Badge

Daily Streak - Bronze Badge

Received for maintaining a streak of 5 days

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