Rishi Raj Singh

• Username: 2★black__hawk
• 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 2026 (Jan-Jun)2025 (Jul-Dec)2025 (Jan-Jun)

Rating Graph

No. of Contests Participated: 10

Current Ratings Graph Old Ratings Graph

1434 (+29)RatingProvisional
Rating i Provisional Rating, click to know more

March Challenge 2016(2016-03-15 15:00:00)

Global Rank:   2011

Cheated in:   

Ratings System Update

(2016-03-15 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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1434 (-99)RatingProvisional
Rating i Provisional Rating, click to know more

March Challenge 2016(2022-12-20 00:00:00)

Global Rank:   2011

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)

January Lunchtime 2015

Piece of cake

February Challenge 2015

Chef and Chain, Let us play with rank list, Chef and Equality

March Challenge 2015

Chef and Notebooks

April Challenge 2015

Chef and Interview, Broken Telephone, Chef and Piano Scales

May Challenge 2015

Chef and new recipe

August Cook-Off 2015

Chef and the Wildcard Matching

March Challenge 2016

Palindromic substrings, maximize the sum

Total Problems Solved: 65