Keigo OKA

• Username: 6★ogiekako
• Country:  Japan
• Student/Professional:Professional
• Organisation:Google
• 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: 9

Current Ratings Graph Old Ratings Graph

2365 (+33)RatingProvisional
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November Cook-Off 2012(2012-11-19 00:00:00)

Global Rank:   21

Cheated in:   

Ratings System Update

(2012-11-19 00:00:00)

This is the difference due to changing the rating system.This graph is not updated after 20th Dec 2022. Know more

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2365 (+184)RatingProvisional
Rating i Provisional Rating, click to know more

November Cook-Off 2012(2022-12-20 00:00:00)

Global Rank:   21

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 (9)

August Cook-off 2011

Open the Dragon Scroll, Vote for the Noodle Soup, Collect the Chocolate Chips, Rotate the String

November Cook-Off

Colorful Chain, Moving Coins, Subanagrams, Graph on a Plane, Buying Candies

January Cook-Off

Makx Sum, Zeta-Nim Game

February 2012 Cook-off

Daily Train, Equation Solver

April Cook-Off 2012

Selection for Training Camps, Top Batsmen, Crease Painting, Resistance

June Cook-Off 2012

Golden Trees, Connecting Soldiers, Closing the Tweets

July Challenge 2012

Dynamic GCD, Favourite Numbers, Chef's Dream, My Fair Coins, The Gray-Similar Code, Little Elephant and Bubble Sort, Gift Rift, Restaurant Rating

September Cook-Off 2012

Pizza Tossing, Coal Scam, Carvans, Recipe Reconstruction, Prime Permutations

November Cook-Off 2012

Little Elephant and Magic, Little Elephant and Permutations, Little Elephant and Divisors

May Lunchtime 2017

Prefix Inversions

Total Problems Solved: 39