Aditya Singh

• Username: 4★c9addy
• Country:  India
• Student/Professional:Student
• Institution:Indraprastha Institute of Information Technology, 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: 10

Current Ratings Graph Old Ratings Graph

1939 (+15)RatingProvisional
Rating i Provisional Rating, click to know more

May Challenge 2021 Division 2 (Rated)(2021-05-17 15:00:02)

Global Rank:   306

Cheated in:   

Ratings System Update

(2021-05-17 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?

1939 (-7)RatingProvisional
Rating i Provisional Rating, click to know more

May Challenge 2021 Division 2 (Rated)(2022-12-20 00:00:00)

Global Rank:   306

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)

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Contests (10)

October Challenge 2020 Division 2

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

November Challenge 2020 Division 2

Restore Sequence, Ada and Dishes, Magical Candy Store, Iron, Magnet and Wall

January Challenge 2021 Division 2

Chef and Ants, Watching CPL, Fair Elections, Encoded String

December Challenge 2020 Division 2

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

December Cook-Off 2020 Division 2

Catch the Thief, Minimum Attendance Requirement

UWCOI 2021 (Rated for all)

Array Swaps, Hidden Numbers

February Challenge 2021 Division 2

Maximise Function, Team Name, XOR Sums, Multiple Games, Another Tree with Number Theory, Frog Sort, Prime Game

April Challenge 2021 Division 2

Binary String MEX, Tree Permutations, Worthy Matrix, Destroy the EMP Chip, Chef and Dice, Boolean Game

May Challenge 2021 Division 2 (Rated)

Tree House, Modular Equation, Tic Tac Toe, Xor Equality, An Interesting Sequence, Valid Paths

June Challenge 2021 Division 2 (Unrated)

Bella ciao, Summer Heat

July Challenge 2021 Division 2 (Unrated)

XxOoRr

CodeChef Starters 6 Division 2 (Unrated)

Cricket Ranking

SnackDown 2021 - Online Qualifiers

Lucky Number, Maximum Number Of Distinct Elements

Total Problems Solved: 59