rohan kumar

• Username: 2★rohan_20
• Country:  India
• Student/Professional:Student
• Institution:Jadavpur University Kolkata, 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: 11

Current Ratings Graph Old Ratings Graph

1508 (-10)RatingProvisional
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February Challenge 2017(2017-02-19 15:00:00)

Global Rank:   3437

Cheated in:   

Ratings System Update

(2017-02-19 15:00:00)

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1508 (-44)RatingProvisional
Rating i Provisional Rating, click to know more

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

Global Rank:   3437

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?

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Contests (11)

August Challenge 2015

Cooking Machine

September Challenge 2015

Count Steps in Matrix

October Challenge 2015

Count Subarrays, Who dares to be a millionaire

September Lunchtime 2015

Sum of palindromic numbers

March Challenge 2016

Palindromic substrings, maximize the sum

April Challenge 2016

Chef And Magical Path, Chef And Coloring, Chef and Ballons, Help Watson Escape

June Challenge 2016

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

September Challenge 2016

Chef and digits of a number, Faded Palindromes, Chef and calculation

February Challenge 2017

Chef and His Apartment Dues

Total Problems Solved: 27