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Programming and DSA

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

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Programming and DSA

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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 » Micheal O Brien
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Micheal O Brien

  • 3★mobrien
  •   Ireland
  • Professional
  • ChronoCow
  • No Active Plan. View Details

Submissions Heat Map

Rating Graph

No. of Contests Participated: 44
1658 (-31)RatingProvisional
Rating i Provisional Rating, click to know more
September Cook-Off 2021 Division 2(2021-09-20 00:30:02)
Global Rank:   2804
Cheated in:   

Ratings System Update

(2021-09-20 00:30:02)
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?
1658 (-18)RatingProvisional
Rating i Provisional Rating, click to know more
September Cook-Off 2021 Division 2(2022-12-20 00:00:00)
Global Rank:   2804
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)

None

Contests (44)

January Challenge 2019 Division 2

Lucky Number Game, Distinct Pairs, Fancy Quotes

January Cook-Off 2019 Division 2

Ada School, Ada King

February Challenge 2019 Division 2

Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, Art of Balance, Deputy Chef

March Challenge 2019 Division 2

Chef got Recipes, Chef and Number Game, Chef and a Beautiful Digit, (Challenge) Interleaving Strings

March Cook-Off 2019 Division 2

UEFA Champions League

April Challenge 2019 Division 2

Friend or Girlfriend, Maximum Remaining, Fencing

April Cook-Off 2019 Division 2

Making a Meal, Chef Learning Hungarian Algorithm

May Challenge 2019 Division 2

Reduce to One

May Cook-Off 2019 Division 2

Chain Reaction, Recover the Sequence

June Challenge 2019 Division 2

Road Signs, Chef and Proxy, Guddu on a Date

July Challenge 2019 Division 2

Minimum and Maximum, Chef and Mean

August Challenge 2019 Division 2

Dilemma, Football, Distribute Apples, Zombie and the Caves

September Challenge 2019 Division 2

Easy Fibonacci, Chef Designed a Network, Chef and Interesting Subsequences

October Challenge 2019 Division 2

Even Edges, Missing Number, Chef and Maximum Star Value, Array Modification, Operations on a Matrix, Phone Prices

December Challenge 2019 Division 2

Plus Multiply, Easy Subsequence Selection, That Is My Score!

January Challenge 2020 Division 2

Doraemon, Equality, Breaking Bricks

February Challenge 2020 Division 2

The Theatre Problem, School of Geometry, Hard Cash, (Challenge) Raisins, Long Contest and Cook Off Overlaps

March Challenge 2020 Division 2

XOR Engine, Ada Bishop 2, Pintu and Fruits

April Challenge 2020 Division 2

Strange Number, Squared Subsequences, Unit GCD, Sell All the Cars, Leaked Answers (Challenge), COVID Pandemic and Long Queue

May Challenge 2020 Division 2

Coronavirus Spread, Isolation Centers

June Challenge 2020 Division 2

Even Matrix, The Tom and Jerry Game!, Chef and Icecream, Covid Sampling (Challenge), Chef and String, Chef and Price Control

July Challenge 2020 Division 2

Ada King, Chefina and Swaps, Missing a Point, Chef and Card Game, Chef and Strings

August Challenge 2020 Division 2

Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess, Smallest KMP

September Challenge 2020 Division 2

A Problem on Sticks, Ada Matrix, Coronavirus Spread 2

August Cook-Off 2020 Division 2

Polygon Relationship, Chef and Work, K-Foldable String

October Challenge 2020 Division 2

Positive AND, Replace for X, Covid Run, Chef and Easy Queries

November Challenge 2020 Division 2

Connect on a Grid (Challenge), Restore Sequence, Ada and Dishes, Iron, Magnet and Wall

January Challenge 2021 Division 2

Watching CPL, Fair Elections, Chef and Division 3, Encoded String

December Challenge 2020 Division 2

Hail XOR, Positive Prefixes, Even Pair Sum, Vaccine Production, Vaccine Distribution

October Cook-Off 2020 Division 2

Split the Str Ing, Decreasing Srrnmieeda

February Challenge 2021 Division 2

Frog Sort, Team Name, Prime Game, Maximise Function

March Cook-Off 2021 Division 2

Guess the Number

CodeChef Div 3 Rated Contest 2021 Division 2 (Unrated)

Rectangle, Chef and Patients, Body Mass Index, Total Score

February CodeChef Starters 2021 Division 2 (Unrated)

Maximum Value, College Life 2, Chef and Coupon

March Challenge 2021 Division 2

Interesting XOR!, Chef and Groups, Space Arrays

April Challenge 2021 Division 2

Worthy Matrix, Chef and Dice, Valid Pair

April Cook-Off 2021 Division 2

OR of ANDs, Chocolate Monger

April CodeChef Starters 2021 Division 2 (Unrated)

Thief and Police, Chef On Island, Hiring Test

May Lunchtime 2021 Division 2

Tom And Jerry 1

May Challenge 2021 Division 2 (Rated)

Xor Equality, Tic Tac Toe, Modular Equation

June Challenge 2021 Division 3 (Rated)

Shortest Route, Bitwise Tuples, Bella ciao, Summer Heat

June Cook-Off 2021 Division 2

The Wave

July Challenge 2021 Division 2 (Unrated)

XxOoRr, Optimal Denomination

July Cook-Off 2021 Division 2

XOR-ORED

CodeChef Starters 7 Division 2 (Unrated)

Chess Format, Food Chain

August Challenge 2021 Division 2 (Unrated)

Special Triplets, Array Filling, Chef and Bulb Invention, Problem Difficulties, Olympics Ranking

August Cook-Off 2021 Division 2

Different String, Chef and Closure, Equal Difference, Clear the Array

CodeChef Starters 9 Division 2 (Unrated)

Black cells in a chessboard, Large Square, Bus full of passengers

September Challenge 2021 Division 2 (Unrated)

XOR Equal, Shuffling Parities, Airline Restrictions, Travel Pass

September Cook-Off 2021 Division 2

Zebra Crossing, Adjacency Hatred

SnackDown 2021 - Online Qualifiers

Lucky Number, Maximum Number Of Distinct Elements

CodeChef Starters 14 Division 2 (Unrated)

Odd GCD, Diagonal movement, FIXFIX

October Challenge 2021 Division 2 (Unrated)

Longest AND Subarray, MEX-OR, Three Boxes, Which Mixture

SnackDown 2021 - Online Round 1A

Round Robin Ranks , Dance Moves, Min Max LCM

SnackDown 2021 - Online Round 1B

Queens Placement , Largest Laddu, Help Nishant

February Long 2022 - II, Division 2 (Unrated)

Avoid Fixed Points

March Long Two 2022, Division 2 (Unrated)

Missing Numbers

May Long One 2022 Division 2 (Unrated)

Pushpa , The Attack of Queen

May Long Two 2022 Division 2 (Unrated)

Make them Zero

June Long One 2022 Division 2 (Unrated)

Alternate Additions, Equal Strings

June Long Two 2022 Division 2 (Unrated)

Count the ACs, Reversal Sorting, Strong Elements

July Long One 2022 Division 2 (Unrated)

Slow Solution

July Long Two 2022 Division 2 (Unrated)

Concat Sort, To Divide or Not To Divide, Sum of Product 1

August Long 2022 Division 2 (Unrated)

Hello Equation, Two Trains

September Long 2022 Division 2 (Unrated)

Interesting Subarray, Good Pairs

December Long 2022 Division 2 (Unrated)

Gcd of Subarrays, Maximise XOR

January Long 2023 Division 2 (Unrated)

Asymmetric Swaps

Total Problems Solved: 217

1658
(Div 2)
★★★
CodeChef Rating (Highest Rating 1815)
  • Inactive Global Rank
  • Inactive Country Rank

Badges

Contest Contender - Silver Badge

Contest Contender - Silver Badge

Received for participating in 25 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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