Rajat Kumar Jain

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

Current Ratings Graph Old Ratings Graph

1613 (-28)RatingProvisional
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Starters 172 (Rated)(2025-02-05 22:00:02)

Global Rank:   1818

Cheated in:   

Ratings System Update

(2025-02-05 22:00:02)

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1688 (-122)RatingProvisional
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CodeChef Starters 13 Division 2 (Rated)(2022-12-20 00:00:00)

Global Rank:   654

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

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Learning Paths (0)

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Practice Paths (0)

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Contests (22)

August Challenge 2015

Cooking Machine

February Challenge 2016

Chef-Detective

May Challenge 2016

Laddu

October Challenge 2019 Division 2

Operations on a Matrix, Phone Prices

November Challenge 2019 Division 2

Physical Exercise, Hard Sequence, Weapon Value

January Challenge 2020 Division 2

Chef and Dynamo, Doraemon, Breaking Bricks

February Challenge 2020 Division 2

School of Geometry

July Challenge 2020 Division 2

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

September Challenge 2020 Division 2

A Problem on Sticks, Ada Matrix

October Challenge 2020 Division 2

Positive AND, Covid Run

June Challenge 2021 Division 3 (Rated)

Bella ciao, Summer Heat

July Challenge 2021 Division 3 (Rated)

Relativity, Maximum Production, Optimal Denomination, XxOoRr, Chef vs Bharat

July Lunchtime 2021 Division 2

Beautiful Pairs, Array Rotation Returns

August Challenge 2021 Division 2 (Unrated)

Chef and Bulb Invention, Problem Difficulties, Olympics Ranking

August Cook-Off 2021 Division 2

Different String, Equal Difference

August Lunchtime 2021 Division 2

K-th Maximum, Crossing Blocks, Just a Graph

CodeChef Starters 10 Division 2 (Rated)

Magical Flips, Remove One Element, Maximise the Subsequence Sum

CodeChef Starters 13 Division 2 (Rated)

Add and Divide, Chef in Vaccination Queue, Maximum Light Up, Magical Doors

September Lunchtime 2021 Division 2

Balanced and Unique Arrays, Alice vs Bob Faceoff, Yet another SOD problem

Starters 170 (Rated)

Monster Monster

Starters 172 (Rated)

Streak Star

Total Problems Solved: 63