Mihail Mihaylov

• Username: 4★mihailm
• Country:  Bulgaria
• Student/Professional:Student
• Institution:Sofia University, Bulgaria
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

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

Rating Graph

No. of Contests Participated: 4

Current Ratings Graph Old Ratings Graph

1863? (-33)RatingProvisional
Rating i Provisional Rating, click to know more

January Challenge 2019 Division 1(2019-01-14 15:00:00)

Global Rank:   552

Cheated in:   

Ratings System Update

(2019-01-14 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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1863 (-20)RatingProvisional
Rating i Provisional Rating, click to know more

January Challenge 2019 Division 1(2022-12-20 00:00:00)

Global Rank:   552

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 (4)

September Challenge 2018 Division 2

War of XORs, Chef and Condition Zero (Challenge), Chef and Adventures, Table Game, Bad Shuffle, Magician versus Chef

November Challenge 2018 Division 1

Appy Loves One, Good Median

October Challenge 2018 Division 2

Beautiful Bricks, Chef and Circles, Byte to Bit, Chef and Serves, Chef and Surprise Chessboard, Minimize Digitsum, Appy and Balloons

January Challenge 2019 Division 1

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

Total Problems Solved: 21