Rajkumar Singh

• Username: 1★john123789
• Country:  India
• Student/Professional:Other
• 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

649 (-7)RatingProvisional
Rating i Provisional Rating, click to know more

Starters 65 Division 4 (Rated)(2022-11-16 23:00:06)

Global Rank:   15312

Cheated in:   

Ratings System Update

(2022-11-16 23:00:06)

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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649 (-5)RatingProvisional
Rating i Provisional Rating, click to know more

Starters 65 Division 4 (Rated)(2022-12-20 00:00:00)

Global Rank:   15312

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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Contests (17)

November Cook-Off 2021 Division 3

Disabled King

CodeChef Starters 21 Division 3 (Rated)

Devendra and Water Sports, Akash and Grid, Covid and Theatre Tickets

January Cook-Off 2022 Division 3

Palindromes Not Allowed, Mean Maximization, Mask Policy, Hungry Ashish

CodeChef Starters 25 Division 3 (Rated)

Points and Lines

CodeChef Starters 28 Division 4 (Rated)

Car Choice, Count the Holidays

Starters 35 Division 4 (Rated)

Dark Light, Police and Thief

May Lunchtime 2022 Division 4 (Rated)

Maximum Pairwise Modular Sum

Starters 39 Division 4 (Rated)

A or B

Starters 55 Division 4 (Rated)

Balls and Boxes

Starters 62 Division 4 (Rated)

Make Multiple

Starters 65 Division 4 (Rated)

Nahaane Jaa

Total Problems Solved: 21