Udit Khemka

• Username: 4★binaryboy1234
• Country:  India
• Student/Professional:Student
• Institution:Bharati Vidyapeeth College of Engineering Delhi, India
• 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

1919 (+110)RatingProvisional
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August Cook-Off 2021 Division 3(2021-08-23 00:30:04)

Global Rank:   22

Cheated in:   

Ratings System Update

(2021-08-23 00:30:04)

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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1919 (+780)RatingProvisional
Rating i Provisional Rating, click to know more

August Cook-Off 2021 Division 3(2022-12-20 00:00:00)

Global Rank:   22

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 (16)

May Lunchtime 2019 Division 2 (Unrated)

CV, Dummy Palindromic Strings

June Challenge 2019 Division 2

Road Signs, Chef and Proxy, Guddu on a Date, Chef and Ingredients, Sum and GCD

July Challenge 2019 Division 2

Parity Again, Minimum and Maximum, Chef and Mean

July Lunchtime 2019 Division 2

Easy Math, Swapping

August Challenge 2019 Division 2

Guddu and his Mother, Zombie and the Caves, Distribute Apples, Football, Dilemma, Encoding

September Challenge 2019 Division 1

Biladerim Icin, Fuzzy Linear Combinations, Expected GCD, Chef Designed a Network

November Challenge 2019 Division 1

Smallest Beautiful Number, From Zero to Infinity, Physical Exercise

December Challenge 2019 Division 1

Chefina and Ranges, Binary XOR, Sticky Notes, Test Generation, Addition

January Challenge 2020 Division 1

Chefland Army, (Challenge) Building Anthills, English, Chefina and Prefix Suffix Sums, Doofish Matrix, Doraemon, Chef and Dynamo

November Challenge 2020 Division 2

Chef and the Combination Lock, Restore Sequence, Ada and Dishes, Magical Candy Store, Scalar Product Tree, Unusual Queries

December Challenge 2020 Division 2

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

January Challenge 2021 Division 3

Expected Number of SCCs, Watching CPL, Fair Elections, Chef and Division 3, Point Of Impact, Encoded String

January Lunchtime 2021 Division 3 (Unrated)

Ashishgup and Interviews, Even Sum, Even Differences, Binary Subsequence, Dreams of Divisibility, Pair Me

February Challenge 2021 Division 3

Cut the Cake (Challenge), XOR Sums, Multiple Games, Another Tree with Number Theory, Team Name, Prime Game

March Cook-Off 2021 Division 3

Consecutive Deletions, Pawri Meme, Matrix XOR, Weight Balance, Guess the Number

April Challenge 2021 Division 3

Valid Pair, Boolean Game, Strong Language, World Record, Chef and Dice, Worthy Matrix, Binary String MEX

August Cook-Off 2021 Division 3

Odd Array, Different String, Chef and Closure, Equal Difference, Clear the Array, Which Division, Team Formation

Total Problems Solved: 264