RISHAV KUMAR

• Username: 4★rkpro
• 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 2025 (Jul-Dec)2025 (Jan-Jun)2024 (Jul-Dec)2024 (Jan-Jun)

Rating Graph

No. of Contests Participated: 26

Current Ratings Graph Old Ratings Graph

1986 (+10)RatingProvisional
Rating i Provisional Rating, click to know more

Starters 53 Division 2 (Rated)(2022-08-24 23:00:02)

Global Rank:   251

Cheated in:   

Ratings System Update

(2022-08-24 23:00:02)

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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1986 (-2)RatingProvisional
Rating i Provisional Rating, click to know more

Starters 53 Division 2 (Rated)(2022-12-20 00:00:00)

Global Rank:   251

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 (26)

May Lunchtime 2020 Division 2

Lost Weekends, Weird Walk

September Challenge 2020 Division 2

Ada Matrix, A Problem on Sticks

July Lunchtime 2020 Division 2

Chef and Steps

August Cook-Off 2020 Division 2

Polygon Relationship, Chef and Work, K-Foldable String

August Lunchtime 2020 Division 2

Game on a Strip, Mode of Frequencies, Ratings and Rankings

June Cook-Off 2020 Division 2

Cache Hits

March Long Two 2022, Division 2 (Unrated)

Kostomuksha and AESC MSU, Same Parity Swaps in Binary Strings, Missing Numbers, Minimum Longest Substring

CodeChef Starters 30 Division 2 (Rated)

Minimum Coloring, Gift Shop and Coupon, Balanced Reversals

CodeChef Starters 31 Division 2 (Rated)

XOR and AND, Alternating String, Sign Moves, The Unchanging OR

March Lunchtime 2022 Division 2

Sad Splits, Adjacency Love

April Cook-Off 2022 Division 2

Sticks and Rectangles

CodeChef Starters 33 Division 2 (Rated)

Distinct Dilemma, Make Them Equal, Broken Life, Non Adjacent Flips

CodeChef Starters 34 Division 2 (Rated)

Binary Mismatch, Average Array, Binary String Xor, Good Permutation

April Lunchtime 2022 Division 2(Rated)

Buckets Full of Candies, Pair Pain, Secret Machine Mania

Starters 35 Division 2 (Rated)

Chef Find XOR Beautiful, Admins and Shopping, Concurrent Lines, Dark Light, Jump to Sibling

Starters 36 Division 1(Unrated)

Buying Sweets, Reduce to 1

April Long Two 2022 Division 1 (Unrated)

Geometric Mean Inequality

Starters 37 Division 1 (Unrated)

Dazzling Even-Odd Challenge, Beat the Average, Maximum OR Minimum, Too Mean

Starters 39 Division 1 (Unrated)

Even Subarray XOR, Closest Vowels, Compress the Video

May Long Two 2022 Division 1 (Unrated)

Xor Palindrome, Subarrays with length, Make them Zero

July Cook-Off 2022 Division 2 (Rated)

Permutation And Median, Xor Permutation

June Cook-Off 2022 Division 1 (Rated)

Throw and Take, Simple XOR, Prefix Suffix Distinct

Starters 42 Division 1 (Unrated)

Minimum or Maximum

June Long One 2022 Division 1 (Unrated)

Divisible by i , Possible GCD

Starters 44 Division 2 (Rated)

Dense Bracket Sequence, Atleast and Atmost

June Lunchtime 2022 Division 1 (Rated)

The Lost Array, Max Shift After XOR, XOR Times 2 Is Sum, XOR, The Detective

Starters 45 Division 2 (Rated)

Even Equal Odd, Xor and Multiply, Retrieve the Array, Adjacent Sum Parity

Starters 46 Division 2 (Rated)

Prime Xor, Sort the String

Starters 47 Division 2 (Rated)

Copy and Push Back, End Sorted, Similar Heights

July Lunchtime 2022 Division 2 (Rated)

Easy Pronunciation, Yet Another Palindrome Making Problem, Consecutive XOR, Maximum Median Matching, Largest Family

Starters 48 Division 2 (Rated)

Strict Permutation, Fill The Grid, Make Palindrome 2, Positive array, Accurate XOR

Starters 49 Division 2 (Rated)

Students-Far From Hostel, Valid Minimum, Monks, High Frequency, Split The String

August Lunchtime 2022 Division 2 (Rated)

Easy Permutation, Array Equality, Tree Coloring, Subtract 12 Operation

Starters 53 Division 2 (Rated)

Black&White Ring Game, Make A and B equal, Queen Blocks

Total Problems Solved: 122