Kai Wen Yang

• Username: 7★kevinyang
• Country:  Canada
• Student/Professional:Student
• Institution:University of Waterloo Canada
• CodeChef Pro Plan: No Active Plan. View Details

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

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No. of Contests Participated: 6

Current Ratings Graph Old Ratings Graph

2554 (+26)RatingProvisional
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Starters 144 Division 1 (Rated)(2024-07-24 22:00:00)

Global Rank:   33

Cheated in:   

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(2024-07-24 22:00:00)

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2528 (+157)RatingProvisional
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May Cook-Off 2022 Division 1 (Rated)(2022-12-20 00:00:00)

Global Rank:   53

Cheated in:   

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(2022-12-20 00:00:00)

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Learning Paths (0)

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Contests (6)

September Cook-Off 2021 Division 3

Chess Kings Chasing Game, Cars and Bikes, Chef and Pairwise Distances, Zebra Crossing, Fake Swaps, Fake GCD, Adjacency Hatred

SnackDown 2021 - Online Qualifiers

Lucky Number, Maximum Number Of Distinct Elements, Minimise Difference

CodeChef Starters 13 Division 2 (Rated)

Add and Divide, Chef in Vaccination Queue, Maximum Light Up, Make that Array!, Interesting Pairs, Magical Doors

October Challenge 2021 Division 1 (Unrated)

Longest AND Subarray, Digit Removal, MEX-OR, Three Boxes, Yet another MEX problem, Which Mixture

September Lunchtime 2021 Division 2

Range Array, Interesting Representation, Balanced and Unique Arrays, Alice vs Bob Faceoff, Yet another SOD problem

October Cook-Off 2021 Division 1

Can You Reach The End, Second Player, Find the Modulus, Chef Up

SnackDown 2021 - Online Round 1A

Yet Another Flipping Problem, Round Robin Ranks , Dance Moves, Min Max LCM

SnackDown 2021 - Online Round 1B

Queens Placement , Largest Laddu, Help Nishant

November Challenge 2021 Division 1 (Unrated)

Wildcard Replacement, Xor Equation, Weird Palindrome Making, Hill Sequence, Equal Coins, Which Fuel is Cheaper, Maximise the bridges

Code: Nium Challenge

Alphabet Difference, Divide Students Into Classes, Queries in an Array

CodeChef Starters 24 Division 1 (Unrated)

Anti Palindrome, Avoid Contact, Special String, Badminton Serves, Divisors and Reciprocals, Yet Another Constructive Problem, EVM Hacking

April Long One 2022 Division 1 (Unrated)

Dazzling AXNODR Challenge , Pairwise Xors

May Cook-Off 2022 Division 1 (Rated)

Different Subarrays Rearrange, Triple Inversions

May Long One 2022 Division 1 (Unrated)

Mystical Numbers, The Magical Stone, Alternating Diameter

Starters 79 Division 1 (Rated till 5 Stars)

Love Squares Hate Cubes, K-Beautiful Subarrays, Mountain, One Stone or Two Stones

Starters 80 Division 1 (Rated till 5 stars)

Permutation Subsequence, Prefix Permutation, Eat Rock!, Matrix Pain

Starters 137 Division 1 (Rated till 5-Stars)

Coprime Subarrays, Speedrun, Double Trouble, Unusual Queries

Starters 138 Division 1 (Rated till 6-Stars)

A power B mod C , TRIPLE PRIMES, K Subarray Products, Prefix Suffix Inequality, Breezy Mode Problem, Distinct Substring

Starters 142 Division 1 (Rated till 5-Stars)

Sum of Xors, Array Removal, Number Hunt

Starters 144 Division 1 (Rated)

Counting Is Fun, Find P, Minimise Inversions, Largest K

Starters 150 (Rated till 6 stars)

Equal Pairs (Hard), Min Ops (Hard), Replacing Game

Starters 151 (rated till 5 stars)

Ball Game, Shooting (Hard), Sequence Search, RGB Grid (Easy), RGB Grid (Medium)

Starters 153 (Rated till 5 stars)

Another Game, Colorful Tree (Easy Version), Xometry (Easy Version), Xometry (Hard Version)

Starters 156 (Rated till 6 stars)

Keep Magnets Separated, Expected Value Problem, Balance Difficulties, Interval Cliques, Partition Score

Total Problems Solved: 129