李祥凡

• Username: 5★lixiangfan
• Country:  Singapore
• Student/Professional:Student
• Institution:Tsinghua University
• 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: 14

Current Ratings Graph Old Ratings Graph

2060 (+3)RatingProvisional
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Starters 211 (Rated till 6 - star)(2025-11-05 22:00:00)

Global Rank:   90

Cheated in:   

Ratings System Update

(2025-11-05 22:00:00)

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1836 (-80)RatingProvisional
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Starters 37 Division 2 (Rated)(2022-12-20 00:00:00)

Global Rank:   278

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 (14)

December Lunchtime 2019 Division 2

Stupid Machine, The Evil Professor, Guess the number, Check Algorithm, Frequency Function

January Challenge 2020 Division 2

Chef and Dynamo, Doraemon, Equality, Chefina and Prefix Suffix Sums, Breaking Bricks

February Challenge 2020 Division 1

No Change Required

January Lunchtime 2020 Division 1

Under the Tunnels

May Lunchtime 2020 Division 2

Weird Walk, Lost Weekends, Convert the String

June Challenge 2020 Division 1

The Tom and Jerry Game!, Covid Sampling (Challenge)

November Challenge 2021 Division 2 (Unrated)

Xor Equation, Maximise the bridges

Infinity 2k21 Division 2 (Rated)

Marbles

Starters 37 Division 2 (Rated)

Too Mean, Maximum OR Minimum, Beat the Average, Dazzling Even-Odd Challenge, Infernos

Starters 82 Division 2 (Rated)

Tree Game, Make Them Alike, Find eX, Make A-B Same, Difference Matrix, MIN To MAX

Starters 148 Division 2 (Rated)

Beautiful Flip, FightBots, ZigZag Tree Sequences (Easy)

Starters 154 (Rated)

GCD and XOR, Add 1 or 2 Game, Triangle Count (Easy)

Starters 157 (Rated till 5 stars)

Small, Smaller, Smallest, Normal is Good, Unmedian

Starters 158 (Rated till 6 stars)

Make a Tree, Buying Game, Multiply 2 to Minimize

Starters 211 (Rated till 6 - star)

Subarray Maximums, No Doubling, Tournament Rigging (Minimum)

Total Problems Solved: 61