Kentaro Wakai

• Username: 5★ktr216
• Country:  Japan
• Student/Professional:Professional
• Organisation:Other
• CodeChef Pro Plan: No Active Plan. View Details

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

Rating Graph

No. of Contests Participated: 16

Current Ratings Graph Old Ratings Graph

2029 (-5)RatingProvisional
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March Cook-Off 2022 Division 1(2022-03-05 22:30:00)

Global Rank:   181

Cheated in:   

Ratings System Update

(2022-03-05 22:30:00)

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2029 (-160)RatingProvisional
Rating i Provisional Rating, click to know more

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

Global Rank:   181

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 (16)

September Challenge 2013

Cool Guys, Little Elephant and Exams, CAO Stage-2, CAO Stage-1, Project Spoon, Chef and Integers

October Challenge 2013

Little Elephant and Bamboo, Helping Lira, Maxim and Dividers, Sereja and Transformation, Yet Another Nice Girl, Edit Distance on Grid

November Challenge 2013

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

December Challenge 2013

Magic Pairs, Chef and Codes

January Challenge 2014

Please like me, Chef and Feedback

February Challenge 2014

Make Him Happy, Longest Common Pattern, Little Elephant and Subarrays, Make It Zero 2

March Challenge 2014

Binary Tournament, Mike and Stamps, Little Chef and Numbers, Walk, Team Split, Sereja and Sorting 2

April Challenge 2014

Farmer Feb, Chef and Digits, Shortest Path in Binary Trees

February Lunchtime 2014

Sereja and ASum

September Challenge 2015

Chain of Doughnuts, Cracking the Code, Count Steps in Matrix, Bank robbery

January Cook-Off 2022 Division 2

Palindromes Not Allowed, Mean Maximization, Subsegment Divisibility , Merged LIS, Prime Graph

CodeChef Starters 23 Division 2 (Unrated)

Average of Three, Chef and Profits, Subarray Mex, Maximise the Minimum, Maximising Vacations, Non Zero Subarray Xor

January Lunchtime 2022 Division 2

Subarray permutations, Prefix Zeros, Permutation XOR Sum

CodeChef Starters 24 Division 1 (Unrated)

Anti Palindrome

February Long 2022 - I, Division 1 (Unrated)

Binary Base Basics

February Cook-Off 2022 Division 1

Xor Becoming Uncanny, Perfect Permutation, PerMEXuation , Mango Market

CodeChef Starters 26 Division 1 (Unrated)

Careless Chef

February Lunchtime 2022 Division 1

Visit Them All, Magical Modulo, Magnet Sort

CodeChef Starters 28 Division 1 (Unrated)

Travelling in the Graph, Permutation Xority

CodeChef Starters 29 Division 1 (Unrated)

Plusle and Minun on Array

March Cook-Off 2022 Division 1

Dragonado And XOR, Alternating Divisibility

CodeChef Starters 32 Division 1 (Unrated)

Maximize the Minimum, Finding Shoes, Flip Sorting

Total Problems Solved: 82