Peter

• Username: 4★petruz
• Country:  Netherlands
• Student/Professional:Other
• CodeChef Pro Plan: No Active Plan. View Details

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Last 6 Months 2026 (Jan-Jun)2025 (Jul-Dec)2025 (Jan-Jun)

Rating Graph

No. of Contests Participated: 15

Current Ratings Graph Old Ratings Graph

1842 (-36)RatingProvisional
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May Challenge 2021 Division 2 (Rated)(2021-05-17 15:00:02)

Global Rank:   4256

Cheated in:   

Ratings System Update

(2021-05-17 15:00:02)

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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1842 (+122)RatingProvisional
Rating i Provisional Rating, click to know more

May Challenge 2021 Division 2 (Rated)(2022-12-20 00:00:00)

Global Rank:   4256

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 (15)

November Challenge 2017

Chef goes Left Right Left, Chef Hates Palindromes, Villages and Tribes, Periodic Palindrome Construction

December Challenge 2017

Chef And his Cake, Penalty Shoot-out, Chef and Hamming Distance of arrays

January Challenge 2018

K-Concatenation, Maximum Score, Rectangle, Partition the numbers

February Challenge 2018

Chef And The Patents, Permutation and Palindrome, Car-pal Tunnel, Chef And His Characters

March Challenge 2018 DIV 2

A Big Sale, Mix the Colors, Chef and Glove, Minion Chef and Bananas

April Challenge 2018 Division 2

Weight of Numbers, Workers, Average of Pairs, Count Good Prefixes, Highway Crossing, Cutting Plants

May Challenge 2018 Division 2

Mighty Friend, Minimum Deletions, Xor Again, Fake Binary Search, Dibs on Fibs

December Challenge 2018 Division 1

Max and Electrical Panel, Chef and Interactive XOR

January Challenge 2019 Division 1

Yet Another Problem About Sequences, Different Neighbours, Distinct Pairs, A Pizza Slice

June Challenge 2019 Division 1

Chef and Ingredients

July Challenge 2019 Division 2

Minimum and Maximum, Chef and Mean , Guess the Prime!

December Challenge 2019 Division 2

Plus Multiply, Binary XOR, Easy Subsequence Selection, That Is My Score!, Addition

January Challenge 2020 Division 2

Chef and Dynamo, Doraemon, Equality, Breaking Bricks

February Challenge 2020 Division 2

Long Contest and Cook Off Overlaps, (Challenge) Raisins, Hard Cash, The Theatre Problem, No Change Required, School of Geometry

May Challenge 2021 Division 2 (Rated)

Xor Equality, Tic Tac Toe

August Challenge 2021 Division 2 (Unrated)

Array Filling, Chef and Bulb Invention, Charge Scheduling, Problem Difficulties, Olympics Ranking

June Long One 2022 Division 2 (Unrated)

Reduce to zero, Equal Strings, Alternate Additions, Possible GCD, Divisible by i

August Long 2022 Division 2 (Unrated)

Angled Flip, XOR with smallest element, Hello Equation, Two Trains

Starters 54 Division 2 (Unrated)

K Flip

Total Problems Solved: 125