Rishabh Kumar

• Username: 2★strangeknight
• Country:  India
• Student/Professional:Student
• Institution:Delhi Technological University New Delhi, India
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

Last 6 Months 2025 (Jan-Jun)2024 (Jul-Dec)2024 (Jan-Jun)

Rating Graph

No. of Contests Participated: 22

Current Ratings Graph Old Ratings Graph

1533 (+7)RatingProvisional
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September Challenge 2017(2017-09-11 15:00:00)

Global Rank:   4318

Cheated in:   

Ratings System Update

(2017-09-11 15:00:00)

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1533 (-4)RatingProvisional
Rating i Provisional Rating, click to know more

September Challenge 2017(2022-12-20 00:00:00)

Global Rank:   4318

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 (22)

October Challenge 2015

Count Subarrays, Time measure, Rupsa and Equilateral Triangle, Who dares to be a millionaire

December Challenge 2015

Chef and the stones, Oracle Devu and Longest Common Subsequence

December Cook-Off 2015

Chef and Subarrays

September Lunchtime 2015

Sum of palindromic numbers

December Lunchtime 2015

Distinct Codes

February Challenge 2016

Chef and Strange Operations, Chef-Detective

March Challenge 2016

Palindromic substrings

June Challenge 2016

Chef And The Hiring Event, Chef And Binary Operation, Chef and Coins Game, Devu and an Array

July Challenge 2016

Andrash and Stipendium

September Challenge 2016

Chef and digits of a number, Faded Palindromes

October Challenge 2016

Chef and Keyboard, Fenwick Iterations, Chef and Three Dogs

February Cook-Off 2016

Puppy and Board, Puppy and Sum

January Lunchtime 2016

Triangle Classification

January Challenge 2017

Cats and Dogs

February Challenge 2017

Chef and His Apartment Dues

April Challenge 2017

Dish Of Life, Bear and Row 01, Similar Dishes

June Challenge 2017

A Good Set, Xenny and Coin Rankings

September Challenge 2017

Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums

Total Problems Solved: 134