Chen Jianqun

• Username: 3★groupbuilder
• Country:  United States
• Student/Professional:Professional
• Organisation:Mountain View, CA
• 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: 2

Current Ratings Graph Old Ratings Graph

1768? (+71)RatingProvisional
Rating i Provisional Rating, click to know more

October Challenge 2015(2015-10-12 15:00:00)

Global Rank:   825

Cheated in:   

Ratings System Update

(2015-10-12 15:00:00)

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1768? (+57)RatingProvisional
Rating i Provisional Rating, click to know more

October Challenge 2015(2022-12-20 00:00:00)

Global Rank:   825

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 (2)

December 2009 (Contest XI)

The N Queens Puzzle Revisited, Effective Sets, Palindromic Numbers, Maze of Digits, Plant Location

October Challenge 2015

Time measure, Count Subarrays, Who dares to be a millionaire, Spheres, Rupsa and Equilateral Triangle

Total Problems Solved: 10