Rishu Ranjan Singh

• Username: 2★dark_3
• Country:  India
• Student/Professional:Student
• Institution:National Institute of Technology, Durgapur West Bengal, 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

1571 (+13)RatingProvisional
Rating i Provisional Rating, click to know more

March Cook-Off 2021 Division 2(2021-03-22 00:00:02)

Global Rank:   1402

Cheated in:   

Ratings System Update

(2021-03-22 00:00:02)

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?

1571 (-91)RatingProvisional
Rating i Provisional Rating, click to know more

March Cook-Off 2021 Division 2(2022-12-20 00:00:00)

Global Rank:   1402

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)

None

Practice Paths (0)

None

Contests (10)

July Challenge 2020 Division 2

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

August Challenge 2020 Division 2

Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess

September Challenge 2020 Division 2

Chefina and Swap, A Problem on Sticks, Ada Matrix, Coronavirus Spread 2

July Cook-Off 2020 Division 2

Even-tual Reduction, OR-thodox Distinction

October Challenge 2020 Division 2

Positive AND, Chef and Easy Queries, Covid Run

January Challenge 2021 Division 2

Fair Elections

February Challenge 2021 Division 3

Frog Sort, Chef and Meetings, Prime Game, Maximise Function, Highest Divisor

March Cook-Off 2021 Division 2

Matrix XOR, Guess the Number

March Challenge 2021 Division 2

Interesting XOR!, Space Arrays

Total Problems Solved: 63