Rahul Kumar

• Username: 3★rahulkraj
• Country:  India
• Student/Professional:Student
• Institution:Indian Institute of Technology Delhi 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: 22

Current Ratings Graph Old Ratings Graph

1695 (+21)RatingProvisional
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September Challenge 2017(2017-09-11 15:00:00)

Global Rank:   2884

Cheated in:   

Ratings System Update

(2017-09-11 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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1695 (-33)RatingProvisional
Rating i Provisional Rating, click to know more

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

Global Rank:   2884

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)

May Challenge 2016

Laddu

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, Chefland and Electricity

September Challenge 2016

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

October Challenge 2016

Chef and Keyboard

November Challenge 2016

Count Permutations, Chef and squares

October Cook-Off 2016

ChefWatson uses Social Network, Watson asks Does Permutation Exist

November Lunchtime 2016

Chef and his Students

January Challenge 2017

Cats and Dogs

February Challenge 2017

Chef and Triangles, Chef and His Apartment Dues, Gerrymander

March Challenge 2017

Cooking Schedule, Xenny and Alternating Tasks, Bear and Extra Number, (CH) Bear and Sorted Rows, Bandwidth of a matrix

February Lunchtime 2017

Bear and Milky Cookies

April Challenge 2017

Dish Of Life, Similar Dishes, Bear and Row 01, Bear and Clique Distances

June Challenge 2017

A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets

July Challenge 2017

Chef and Sign Sequences, Tree Expectancy, Whats in the Name, Calculator , IPC Trainers

August Long Challenge 2017

Chef and Rainbow Array, Greedy Candidates, Palindromic Game, Chef and Mover

September Challenge 2017

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

March Lunchtime 2017

Bear and Ladder, Bear and Species

May Lunchtime 2017

Prefix Inversions

International Coding League (Rated)

Cards Game, Worst Case Analysis

Total Problems Solved: 72