Raj

• Username: 4★rocknraj
• Country:  India
• Student/Professional:Student
• Institution:Indian Institute of Information Technology, Allahabad Uttar Pradesh
• 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: 17

Current Ratings Graph Old Ratings Graph

1815 (+43)RatingProvisional
Rating i Provisional Rating, click to know more

December Challenge 2020 Division 1(2020-12-14 15:00:00)

Global Rank:   150

Cheated in:   

Ratings System Update

(2020-12-14 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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1815 (-189)RatingProvisional
Rating i Provisional Rating, click to know more

December Challenge 2020 Division 1(2022-12-20 00:00:00)

Global Rank:   150

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 (17)

January Challenge 2020 Division 2

Equality, Chef and Dynamo, Breaking Bricks

February Challenge 2020 Division 2

School of Geometry, Hard Cash

January Cook-Off 2020 Division 2

Chef Chick

June Challenge 2020 Division 2

Even Matrix, The Tom and Jerry Game!, Operations on a Tuple, Chef and Icecream, Covid Sampling (Challenge), Chef and String, Chef and Price Control

July Challenge 2020 Division 2

Ada King, Chef and Strings, Chef and Card Game, Doctor Chef, Missing a Point, Chefina and Swaps

August Challenge 2020 Division 1

Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess, Smallest KMP, Chef and Wedding Arrangements

September Challenge 2020 Division 1

Ada Matrix, Find XOR

July Cook-Off 2020 Division 2

What Is This, a Crossover Episode, Even-tual Reduction, OR-thodox Distinction

August Lunchtime 2020 Division 1

Game on a Strip

June Cook-Off 2020 Division 2

Cache Hits, Max Mex

June Lunchtime 2020 Division 2

Maximum AND, Chef and Demonetisation, Increasing Decreasing

December Challenge 2020 Division 1

Positive Prefixes, Even Pair Sum, String Operations, Calculus, Hail XOR

October Lunchtime 2020 Division 1

Chef Likes Good Sequences, Chef Is Just Throwing Random Words

November Lunchtime 2020 Division 1

Gasoline

Coders' Legacy (Rated for all)

Chef vs Doof, Doof on Cartesian

September Lunchtime 2020 Division 2

GCD operations, Root the Tree, Robot Detector, Watermelon

Code Ensemble (Rated for Division 2)

Help Martha

January Long 2022 - I, Division 1 (Unrated)

Chef and Riffles

Total Problems Solved: 80