RAJAT KUMAR

• Username: 1★rayzer_123
• Country:  India
• Student/Professional:Student
• Institution:Motilal Nehru National Institute of Technology Allahabad Uttar Pradesh, 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: 21

Current Ratings Graph Old Ratings Graph

1394 (+24)RatingProvisional
Rating i Provisional Rating, click to know more

February Long 2022 - I, Division 3 (Rated)(2022-02-07 15:00:00)

Global Rank:   1716

Cheated in:   

Ratings System Update

(2022-02-07 15:00:00)

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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1394 (-141)RatingProvisional
Rating i Provisional Rating, click to know more

February Long 2022 - I, Division 3 (Rated)(2022-12-20 00:00:00)

Global Rank:   1716

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)

March Challenge 2019 Division 2

Chef and Number Game

August Challenge 2019 Division 2

Football

October Challenge 2019 Division 2

Phone Prices

December Challenge 2019 Division 2

Plus Multiply, That Is My Score!

January Challenge 2020 Division 2

Chef and Dynamo, Breaking Bricks

February Challenge 2020 Division 2

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

March Challenge 2020 Division 2

Pintu and Fruits

May Challenge 2020 Division 2

Coronavirus Spread, Isolation Centers

July Challenge 2020 Division 2

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

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

October Challenge 2020 Division 2

Positive AND, Chef and Easy Queries, Covid Run

September Cook-Off 2020 Division 2

Bowling Strategy

September Lunchtime 2020 Division 2

Watermelon

December Cook-Off 2021 Division 3

Two Rooks, Friends Meetup

February Long 2022 - I, Division 3 (Rated)

Binary Base Basics, N Queens Puzzle Solved !, Chef and the Hair Salon

Total Problems Solved: 51