Karn Kumar Singh

• Username: 5★forerunner
• Country:  India
• Student/Professional:Student
• Institution:National Institute of Technology Patna Bihar, India
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

Last 6 Months 2025 (Jan-Jun)2024 (Jul-Dec)2024 (Jan-Jun)

Rating Graph

No. of Contests Participated: 10

Current Ratings Graph Old Ratings Graph

2007 (+40)RatingProvisional
Rating i Provisional Rating, click to know more

January Cook-Off 2022 Division 2(2022-01-23 22:30:02)

Global Rank:   176

Cheated in:   

Ratings System Update

(2022-01-23 22:30:02)

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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2007 (-42)RatingProvisional
Rating i Provisional Rating, click to know more

January Cook-Off 2022 Division 2(2022-12-20 00:00:00)

Global Rank:   176

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 (10)

January Lunchtime 2021 Division 2 (Unrated)

Even Differences, Binary Subsequence, Even Sum

January Challenge 2021 Division 3

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

January Cook-Off 2021 Division 3

Distinct Pair Sums, Password

March Cook-Off 2021 Division 2

Consecutive Deletions, Guess the Number

March Lunchtime 2021 Division 2

Dinner by Candlelight, Lunchtime, Racing

International Coding Marathon 2021 Division 2 (Rated)

Suffix Sort, Infinite polygons, Lucky Boundaries

May CodeChef Starters 2021 Division 2 (Unrated)

Cheating Time

June Cook-Off 2021 Division 2

Binary String on Steroids, The Wave

June Lunchtime 2021 Division 2

Tic Tac Toe, False Number, From Rational to Binary, Unpleasant Ones

CodeChef Starters 21 Division 2 (Rated)

Akash and Grid, ChefWM, And Or Union, Covid and Theatre Tickets, Mean equals Median

CodeChef Starters 22 Division 2 (Rated)

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

January Cook-Off 2022 Division 2

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

CodeChef Starters 23 Division 1 (Unrated)

Subarray Mex, Maximising Vacations

CodeChef Starters 24 Division 1 (Unrated)

Avoid Contact

Starters 61 Division 1 (Unrated)

Weird Subarrays, Red Blue Flowers, Subarray Removal

Total Problems Solved: 71