Timothy Qian

• Username: 7★tqian
• Country:  United States
• Student/Professional:Student
• Institution:Massachusetts Institute of Technology Cambridge, Massachusetts, USA
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

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

Rating Graph

No. of Contests Participated: 6

Current Ratings Graph Old Ratings Graph

2576 (+1)RatingProvisional
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December Cook-Off 2020 Division 1 (2020-12-22 00:00:00)

Global Rank:   24

Cheated in:   

Ratings System Update

(2020-12-22 00:00:00)

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2576 (+71)RatingProvisional
Rating i Provisional Rating, click to know more

December Cook-Off 2020 Division 1 (2022-12-20 00:00:00)

Global Rank:   24

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 (6)

April Challenge 2020 Division 2

Squared Subsequences, Ready Bitwise, Factor Tree, Unit GCD, Sell All the Cars, Leaked Answers (Challenge), COVID Pandemic and Long Queue, Strange Number

December Challenge 2020 Division 1

Calculus, Even Pair Sum, Positive Prefixes, Palindromic Equivalence, String Operations, Digit Matrix, Permutations, Linear Combination, Square Root of LCA Convolution, Hail XOR

December Cook-Off 2020 Division 1

Mysterious Sequence, Carry All Fruits, Circle of Chaos, Sed Passwords, Self-Destructing Strings

November Cook-Off 2020 Division 1

Flip the String, Chef and IPC Certificates, Graph Construction, Set Queries, Hiring Workers

November Lunchtime 2020 Division 1

Gasoline, Rook Path, Fractions

September Lunchtime 2020 Division 2

Permutation Split, GCD operations, Root the Tree, Robot Detector, Watermelon

Total Problems Solved: 40