John Callow

• Username: 3★jcallow
• Country:  United States
• Student/Professional:Professional
• Organisation:Unemployed
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

Last 6 Months 2025 (Jan-Jun)2024 (Jul-Dec)2024 (Jan-Jun)

Rating Graph

No. of Contests Participated: 4

Current Ratings Graph Old Ratings Graph

1681? (+66)RatingProvisional
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August Challenge 2018 Division 2(2018-08-13 15:00:05)

Global Rank:   575

Cheated in:   

Ratings System Update

(2018-08-13 15:00:05)

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1681 (-88)RatingProvisional
Rating i Provisional Rating, click to know more

August Challenge 2018 Division 2(2022-12-20 00:00:00)

Global Rank:   575

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)

November Challenge 2017

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

November Lunchtime 2017

Smart Strategy

June Challenge 2018 Division 2

Vision, Sheokand and String, Binary Shuffle, Naive Chef

August Challenge 2018 Division 2

Modular GCD, Problem Sort, Sheokand and Number, Spell Bob

Total Problems Solved: 15