Rahul Kumar

• Username: 4★rahul_rj
• Country:  India
• Student/Professional:Student
• Institution:Indian Institute of Technology Indore Simrol, Madhya Pradesh, 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: 28

Current Ratings Graph Old Ratings Graph

1853 (-33)RatingProvisional
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Starters 101 Division 2 (Rated)(2023-09-20 22:00:02)

Global Rank:   934

Cheated in:   

Ratings System Update

(2023-09-20 22:00:02)

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1934 (-116)RatingProvisional
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March Lunchtime 2022 Division 2(2022-12-20 00:00:00)

Global Rank:   65

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 (28)

January Challenge 2021 Division 3

Chef and Division 3, Point Of Impact, Encoded String, Fair Elections

January Cook-Off 2021 Division 3

Distinct Pair Sums, Password

January Lunchtime 2021 Division 3 (Unrated)

Ashishgup and Interviews, Pair Me, Even Differences, Even Sum

February Challenge 2021 Division 3

Highest Divisor, Maximise Function

April Cook-Off 2021 Division 3

Bodybuilder, Passing Marks, Chocolate Monger

May Cook-Off 2021 Division 3

The Last Problem, Marathon, Vaccine Drive

May Lunchtime 2021 Division 2

Charges, Tom And Jerry 1

May Challenge 2021 Division 3 (Rated)

Golf, Solubility, Tic Tac Toe, Xor Equality

June Challenge 2021 Division 2 (Unrated)

Bella ciao, Summer Heat

June Cook-Off 2021 Division 2

The Wave

June Lunchtime 2021 Division 2

From Rational to Binary, False Number, Unpleasant Ones

October Lunchtime 2021 Division 2

Exactly N plus 1 Values

December Cook-Off 2021 Division 2

Median Minimization, Musical Chairs

CodeChef Starters 21 Division 2 (Rated)

Akash and Grid, And Or Union

CodeChef Starters 22 Division 2 (Rated)

An Interesting Sequence, Even Subset Xor, Merging Binary Strings, Equal LIS

January Cook-Off 2022 Division 2

Palindromes Not Allowed, Mean Maximization, Subsegment Divisibility , Merged LIS

CodeChef Starters 23 Division 2 (Unrated)

Non Zero Subarray Xor, Maximising Vacations, Chef and Profits, Subarray Mex, Average of Three

January Lunchtime 2022 Division 2

Subarray permutations, Prefix Zeros, Permutation XOR Sum

CodeChef Starters 24 Division 2 (Rated)

Anti Palindrome, Avoid Contact, Divisors and Reciprocals, Yet Another Constructive Problem

CodeChef Starters 25 Division 2 (Rated)

Points and Lines, K Distinct Array, Equal MEX, Building Towers

February Cook-Off 2022 Division 2

Perfect Permutation, PerMEXuation , Prefix Permutation

CodeChef Starters 26 Division 2 (Unrated)

Careless Chef, Control the Pollution

CodeChef Starters 27 Division 2 (Rated)

Distinct Binary Strings, The product mystery

February Lunchtime 2022 Division 2

Four Equidistant Points on a Grid, Parallel Processing, Magnet Sort

CodeChef Starters 28 Division 2 (Rated)

Permutation Xority, Count the Holidays

CodeChef Starters 29 Division 2 (Rated)

String protocol, Plusle and Minun on Array, Increase 2 consecutive characters, Decomposition Reaction

CodeChef Starters 30 Division 2 (Rated)

Minimum Coloring, Maximizing LIS, Gift Shop and Coupon, Balanced Reversals

March Cook-Off 2022 Division 2

Alternating Divisibility, Equal Mex Splitting, Janmansh at Fruit Market, Fixed Weight

March Lunchtime 2022 Division 2

Sad Splits, Winter, Adjacency Love

Starters 61 Division 1 (Unrated)

Weird Subarrays, Subarray Removal

Starters 95 Division 2 (Rated)

Boxes, Transfusion Chain, EVacuate to Moon

Starters 100 Division 2 (Rated)

Stamps 100

Starters 101 Division 2 (Rated)

Warrior Chef, Lockpicking Chef

Total Problems Solved: 288