Ajay Singh

• Username: 1★david_1024
• Country:  India
• Student/Professional:Student
• Institution:Harcourt Butler Technical University, Kanpur
• 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: 21

Current Ratings Graph Old Ratings Graph

901 (-135)RatingProvisional
Rating i Provisional Rating, click to know more

April Challenge 2021 Division 3(2021-04-12 15:00:04)

Global Rank:   29686

Cheated in:   

Ratings System Update

(2021-04-12 15:00:04)

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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901 (-394)RatingProvisional
Rating i Provisional Rating, click to know more

April Challenge 2021 Division 3(2022-12-20 00:00:00)

Global Rank:   29686

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 (21)

December Challenge 2019 Division 2

That Is My Score!, Plus Multiply

December Cook-Off 2019 Division 2

Change It

December Lunchtime 2019 Division 2

Stupid Machine, Check Algorithm

January Challenge 2020 Division 2

Breaking Bricks

February Challenge 2020 Division 2

Hard Cash, Long Contest and Cook Off Overlaps, (Challenge) Raisins, School of Geometry, The Theatre Problem, No Change Required

March Challenge 2020 Division 2

XOR Engine, Ada Bishop 2, Pintu and Fruits

April Challenge 2020 Division 2

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

January Cook-Off 2020 Division 2

Chef Chick, Exam Cheating

January Lunchtime 2020 Division 2

Bob and His Friends, Chef and Street Food

February Lunchtime 2020 Division 2

At the Gates

International Coding Marathon (Rated for all)

Mr Pr in a Dilemma

UWCOI 2020 (Rated for all)

Find maximum in an Array, Button Pairs

June Challenge 2020 Division 1

The Tom and Jerry Game!

July Challenge 2020 Division 2

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

September Cook-Off 2020 Division 2

Bowling Strategy

September Lunchtime 2020 Division 2

GCD operations, Root the Tree, Watermelon

March Challenge 2021 Division 2

Interesting XOR!, Space Arrays

Total Problems Solved: 87