Johann Ptak

• Username: 6★ptak
• Student/Professional:Student
• 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: 3

Current Ratings Graph Old Ratings Graph

2214? (+0)RatingProvisional
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November Cook-Off 2014(2014-11-24 00:00:00)

Global Rank:   93

Cheated in:   

Ratings System Update

(2014-11-24 00:00:00)

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2214? (+160)RatingProvisional
Rating i Provisional Rating, click to know more

November Cook-Off 2014(2022-12-20 00:00:00)

Global Rank:   93

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 (3)

October Cook-Off 2012

Buying Sweets, Equalization, Tennis Tournament

December Cook-Off 2012

Expected Greatest Common Divisor, Root of the Problem, Packaging Cupcakes, Reversing directions

November Cook-Off 2014

Covering Sets, Most Distant Points, Brackets

Total Problems Solved: 10