David Sayers

• Username: 4★sayers
• Country:  India
• Student/Professional:Student
• Institution:University of Waterloo Canada
• 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: 2

Current Ratings Graph Old Ratings Graph

1842? (+272)RatingProvisional
Rating i Provisional Rating, click to know more

December Lunchtime 2015(2015-12-27 14:00:00)

Global Rank:   35

Cheated in:   

Ratings System Update

(2015-12-27 14:00:00)

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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1842? (-15)RatingProvisional
Rating i Provisional Rating, click to know more

December Lunchtime 2015(2022-12-20 00:00:00)

Global Rank:   35

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 (2)

November Challenge 2015

Eugene and function, Simple Sum, Chef and cakes

December Lunchtime 2015

Ancient Berland Roads, Distinct Codes

Total Problems Solved: 13