Rahul Kumar

• Username: 5★janwar
• Country:  India
• Student/Professional:Student
• Institution:National Institute of Technology, Jamshedpur Jharkhand, 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: 17

Current Ratings Graph Old Ratings Graph

2022 (+33)RatingProvisional
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January Lunchtime 2022 Division 2(2022-01-29 23:00:02)

Global Rank:   134

Cheated in:   

Ratings System Update

(2022-01-29 23:00:02)

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2022 (-49)RatingProvisional
Rating i Provisional Rating, click to know more

January Lunchtime 2022 Division 2(2022-12-20 00:00:00)

Global Rank:   134

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)

April Challenge 2021 Division 3

Valid Pair, Chef and Dice, Strong Language, World Record

April Cook-Off 2021 Division 3

Passing Marks, Chocolate Monger

May Lunchtime 2021 Division 2

Charges, Tom And Jerry 1, Total Components

May Challenge 2021 Division 3 (Rated)

An Interesting Sequence, Xor Equality, Tic Tac Toe, Modular Equation, Golf, Solubility

June Challenge 2021 Division 2 (Unrated)

Shortest Route

June Lunchtime 2021 Division 2

From Rational to Binary, False Number, Unpleasant Ones

June CodeChef Starters 2021 Division 2 (Unrated)

Cyclic Quadrilateral, Chess Match, Total Correct Submissions, Sleep Cycle

CodeChef Starters 6 Division 2 (Unrated)

Joker and Batman, Even tuples, Three Dices, Cricket Ranking

CodeChef Starters 7 Division 2 (Unrated)

Food Chain, Chess Format, Maximum Array Xor, Ceiling Sum

CodeChef Starters 10 Division 2 (Rated)

Maximise the Subsequence Sum, Remove One Element

CodeChef Starters 11 Division 2 (Rated)

Positive Spewing, The Grid Fill Problem, Find the Direction, Obtain the Sum, The Two Dishes

November Cook-Off 2021 Division 2

Make it Divisible, Product Pain, Missing Sums

CodeChef Starters 18 Division 2 (Unrated)

Compare those strings, Make them equal

CodeChef Starters 20 Division 2 (Unrated)

Stable Sequence, Brutal-Xors

December Challenge 2021 Division 2 (Unrated)

Valleys and Hills, List of Lists

December Cook-Off 2021 Division 2

Median Minimization, Musical Chairs

CodeChef Starters 21 Division 2 (Rated)

ChefWM, Mean equals Median, And Or Union, Akash and Grid

CodeChef Starters 22 Division 2 (Rated)

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

Infinity 2k21 Division 2 (Rated)

Marbles, Dalgona Treat

Code Drive Division 2 (Rated)

Sum this up, Count Number of Peaks, Again XOR problem, Maximum Factors Problem

January Long 2022 - I, Division 2 (Unrated)

Prime in a binary string

Exun 2021-22 Division 2 (Rated)

Sarthak and his Magic Grid, Vedant and his Hidden Array, Aujasvit and the Circle Game

January Cook-Off 2022 Division 2

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

CodeChef Starters 23 Division 2 (Unrated)

Average of Three, Subarray Mex

January Lunchtime 2022 Division 2

Subarray permutations, Prefix Zeros, Permutation XOR Sum

February Long 2022 - I, Division 1 (Unrated)

Binary Base Basics

Starters 49 Division 1 (Unrated)

Monks

September Long 2022 Division 1 (Unrated)

Pokemon Battles, Interesting Subarray

Total Problems Solved: 98