Ivan Mistreanu

• Username: 4★spooky
• Student/Professional:Professional
• Organisation:MSU SB Teacher
• 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

1993 (-10)RatingProvisional
Rating i Provisional Rating, click to know more

May Challenge 2013(2013-05-13 16:00:00)

Global Rank:   502

Cheated in:   

Ratings System Update

(2013-05-13 16:00:00)

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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1993 (+252)RatingProvisional
Rating i Provisional Rating, click to know more

May Challenge 2013(2022-12-20 00:00:00)

Global Rank:   502

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)

July 2009 (Contest V)

The White Knight, Lights Off, Sums in a cuboid, Lights Off, Revisited!

August 2009 (Contest VI)

Magic sequence, Crystals, Golf course, Bytelandian Robots, Curry Stained Napkin

September 2009 (Contest VIII)

A Bowling Game, Smart Frog, A Coin Game

October 2009 (Contest IX)

A puzzle game

November 2009 (Contest X)

SudokuX, The LCS Problem Revisited, The Best Box

December 2009 (Contest XI)

Palindromic Numbers, Plant Location, Maze of Digits

January 2010 (Contest XII)

Circle of towers, Cell Phone Towers , Lost Primes

February 2010 Contest

The Mine Field, Soccer League

March 2010 Contest

Tri-Hexagonal Puzzle, K-important Strings, Treasure Hunting

April 2010 Contest

Adding Fractions

July Cook Off

The Black and White Knights, Ripple-Carry Adder

August Cook Off

Fetching Cooking Tools, Arranging the Appetizers, Baking Cupcakes, Cleaning Up

September 2010 Challenge

Trees Again, Cake Production Line, Brush Fire, Multiples of 3

December 2010 Challenge

Delivering Bread, The Hungry Bear, Odd Binomial Coefficients, Byteknights and Byteknaves, A String Game, Even Coefficients

January 2011 Challenge

Chess Pushing Game, Flu Shot Lineup, Count Relations

The January 2011 Cook-Off

Whole submatrix, Holes in the text, Chef team

April Long Contest

Number Game Revisited, Central Point, Rectangles Counting, Gravel

May Long Contest 2011

Tree Product, The Great Wall of Byteland

September Long Contest

Younger Brother, BIT Magazine

October Long Contest 2011

Dish Distribution, Repeated String, Lucky Palin

December 2011 Long Contest

Birthday Gift, Robot Movings

January 2012 Challenge

Houses and Restaurants, Gap Filler Game, Lucky Sum

February 2012 Challenge

Lucky Count, Restore the Recipe, Lucky Long, Word Couting, Count of Maximum

March 2012 Challenge

Spoon in Matrix, Home Delivery, Longest Weird Subsequence, Free Shuttle Service

April Challenge 2012

Fit to Play, Double Strings, Stacking Pancakes, Greatest Dumpling Fight

May Challenge 2012

Jewels and Stones, Lucky lucky number

October Challenge 2012

Need More Diamonds, The New Scheme, Blade Master, Event Organizer, Fierce Battles, Little Elephant and Order

February 2013 Challenge

Little Elephant and Cards, Buy1-Get1, Climbing Stairs

April Challenge 2013

Little Elephant and Music, Barcelona Gameplay Tactics, Maximum Weight Difference, Levy Conjecture

May Challenge 2013

Matchsticks, Witua and Math, Name Reduction, Your Name is Mine, Field Trip

Total Problems Solved: 102