ruiguo yang

• Username: 2★yangruiguo
• Student/Professional:Professional
• Organisation:Shanghai
• 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: 14

Current Ratings Graph Old Ratings Graph

1523 (-23)RatingProvisional
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July Challenge 2019 Division 2(2019-07-15 15:00:02)

Global Rank:   5952

Cheated in:   

Ratings System Update

(2019-07-15 15:00:02)

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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1523 (+5)RatingProvisional
Rating i Provisional Rating, click to know more

July Challenge 2019 Division 2(2022-12-20 00:00:00)

Global Rank:   5952

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)

Practice Paths (1)

Practice for ZCO and INOI

12%

Contests (14)

October Challenge 2012

Fierce Battles

November Challenge 2012

Coin Flip

June Challenge 2013

Lapindromes

September Challenge 2013

CAO Stage-1

October Challenge 2013

Helping Lira, Maxim and Dividers

November Challenge 2013

Missing some chairs, Square Digit Squares, Uncle Johny, Superpowers of 2

December Challenge 2013

Magic Pairs

March Challenge 2014

Walk, Mike and Stamps

April Challenge 2014

Farmer Feb, Shortest Path in Binary Trees

May Challenge 2019 Division 2

Reduce to One, Where to Build the Roads

July Challenge 2019 Division 2

Chef and Mean

Total Problems Solved: 55