Tatsuya Sano

• Username: 3★tatuyan
• Country:  Japan
• Student/Professional:Professional
• Organisation:JMA
• 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: 26

Current Ratings Graph Old Ratings Graph

1602 (-30)RatingProvisional
Rating i Provisional Rating, click to know more

May Challenge 2017(2017-05-18 15:00:00)

Global Rank:   4895

Cheated in:   

Ratings System Update

(2017-05-18 15:00:00)

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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1602 (+145)RatingProvisional
Rating i Provisional Rating, click to know more

May Challenge 2017(2022-12-20 00:00:00)

Global Rank:   4895

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 (26)

May Cook-off 2011

Popular Rice Recipe

July Cook-off 2011

Misinterpretation, Garden Squares

August Long Contest 2011

Infinite Grid Game

August Cook-off 2011

Vote for the Noodle Soup, Open the Dragon Scroll

September Long Contest

BIT Magazine

September Cook-off

Hotel Bytelandia

November Cook-Off

Subanagrams

December Cook-Off

Ciel and New Menu, Ciel and A-B Problem

February 2012 Challenge

Lucky Long, Count of Maximum

March 2012 Challenge

Free Shuttle Service, Spoon in Matrix

March Cook-Off 2012

Ciel Numbers I

June Challenge 2012

Little Elephant and Candies, Arranging Cup-cakes

August Challenge 2012

Little Elephant and Bombs, Delivery Boy

September Cook-Off 2012

Carvans, Recipe Reconstruction

February Cook-Off 2013

Lack of Logic, Row and Column Operations

September Challenge 2013

Cool Guys, Chef and Integers , CAO Stage-1, CAO Stage-2

September Lunchtime 2014

Chef and easy problem

February Challenge 2016

Chef and Strange Operations

March Challenge 2016

maximize the sum, Palindromic substrings

June Challenge 2016

Devu and an Array

February Lunchtime 2016

Chef and Socks, Chef and Tic-Tac-Toe

February Challenge 2017

Chef and Triangles, Chef and His Apartment Dues

March Challenge 2017

Xenny and Alternating Tasks

April Challenge 2017

Similar Dishes

May Challenge 2017

Chef and his daily routine, Courses in an university

March Cook-Off 2017

Safe Robot

Total Problems Solved: 48