Joel Edu Sanchez Castro

• Username: 5★empty007
• Country:  
• Student/Professional:Student
• Institution:Universidade de São Paulo
• 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: 30

Current Ratings Graph Old Ratings Graph

2021 (-28)RatingProvisional
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May Challenge 2016(2016-05-16 15:00:00)

Global Rank:   734

Cheated in:   

Ratings System Update

(2016-05-16 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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2021 (+78)RatingProvisional
Rating i Provisional Rating, click to know more

May Challenge 2016(2022-12-20 00:00:00)

Global Rank:   734

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 (30)

September Cook-off

Digit Rotation, Hotel Bytelandia

March Cook-Off 2012

Ciel Numbers I, Ciel Numbers II

May Cook-Off 2012

Little Elephant and Balance, Little Elephant and Strings

June Challenge 2012

Little Elephant and Product, Little Elephant and Candies, Doom Bakes Cakes, Arranging Cup-cakes

July Challenge 2012

Chef's Dream, My Fair Coins, The Gray-Similar Code, Gift Rift, Restaurant Rating

August Challenge 2012

Little Elephant and Bombs, Lucky Driving, Range of Data, Delivery Boy

August Cook-Off 2012

Forced Output, Code Crazy Minions

September Challenge 2012

Kisses & Hugs, Racing Horses, ChefTown Parade, Three is Crowd

October Challenge 2012

Fierce Battles, Event Organizer, The New Scheme

November Challenge 2012

A Wonderful Chocolate, Delicious Dishes, Candy Collecting Game, Coin Flip, Jam Board, Sridhar Likes Travelling

November Cook-Off 2012

Little Elephant and Permutations, Little Elephant and Divisors

December Challenge 2012

Granama Recipes, Book Exercises, Magic Rankings, Pizza Delivery

February 2013 Challenge

Little Elephant and Cards, Buy1-Get1, Magic Board, Climbing Stairs

February Cook-Off 2013

Lack of Logic, Row and Column Operations, Hotel Balifornia 2

August Challenge 2013

Little Elephant and Lemonade, Hello Hello, Save The Princess, The Number Of Solutions, Chef and Segments, Splitting Candies

September Challenge 2013

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

August Cook-Off 2014

Tree Game, Permutation Shuffle

September Cook-Off 2014, ACM-ICPC Warm up

Sherlock and the Grid, Subarray GCD, Subarray LCM

November Cook-Off 2014

Brackets, Petersen Graph

June Challenge 2014

Maxim and Progressions, Chef and Digit Jumps, Chef and Subarray, Guessing Game, Forgot Password

August Challenge 2014

Chef and Reversing, The Leaking Robot, Cleaning Tables, Chef and Gift

October Challenge 2014

Remy paints the fence, Chef and Ground, Chef and Square, Magical Girl and Colored Liquid Potions, DevuLand, Dinosaurs and Laddus

January Challenge 2015

Chef and Stones, Sereja and Votes, One Dimensional Kingdoms, Gcd Queries

February Challenge 2015

Chef and Chain, Chef and Strange Formula, Chef and Strings, Let us play with rank list, Chef and Equality

March Challenge 2015

Count Substrings, Chef and Notebooks, Devu and his Class, Sign Wave, Matrix

March Cook-Off 2015

How to Minimize a String, How to Repaint a Fence

February Challenge 2016

Chef-Detective

May Challenge 2016

Chef and Balls, Forest Gathering, Chef and Big Soccer, Laddu

April Cook-Off 2016

Movie Weekend, Odd Divisors, Queries on a Binary Tree

Total Problems Solved: 141