Richard Peng '23

• Username: 2★notrichardpeng
• Country:  United States
• Student/Professional:Other
• CodeChef Pro Plan: No Active Plan. View Details

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

Rating Graph

No. of Contests Participated: 4

Current Ratings Graph Old Ratings Graph

1591? (+112)RatingProvisional
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November Cook-Off 2021 Division 3(2021-11-22 00:00:04)

Global Rank:   184

Cheated in:   

Ratings System Update

(2021-11-22 00:00:04)

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1591 (-96)RatingProvisional
Rating i Provisional Rating, click to know more

November Cook-Off 2021 Division 3(2022-12-20 00:00:00)

Global Rank:   184

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 (4)

December Challenge 2020 Division 2

Positive Prefixes, Even Pair Sum, Vaccine Production, Vaccine Distribution

March Challenge 2021 Division 3

Interesting XOR!, Chef and Groups, Space Arrays, No Time to Wait

November Challenge 2021 Division 3 (Rated)

Weird Palindrome Making, Hill Sequence, Equal Coins, Which Fuel is Cheaper

November Cook-Off 2021 Division 3

Disabled King, Odds and Evens, Missing Sums, Make it Divisible

Total Problems Solved: 16