Prateek Singh

• Username: 1★laststringx
• Country:  India
• Student/Professional:Professional
• Organisation:Oracle India Pvt. Ltd.
• 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: 9

Current Ratings Graph Old Ratings Graph

1325 (-64)RatingProvisional
Rating i Provisional Rating, click to know more

October Challenge 2017(2017-10-16 15:00:00)

Global Rank:   9920

Cheated in:   

Ratings System Update

(2017-10-16 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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1325 (-86)RatingProvisional
Rating i Provisional Rating, click to know more

October Challenge 2017(2022-12-20 00:00:00)

Global Rank:   9920

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 (9)

November Challenge 2014

Distinct Characters Subsequence, Let us construct palindrome

February Challenge 2015

Chef and Chain, Let us play with rank list, Chef and Equality

April Challenge 2015

Broken Telephone

March Lunchtime 2016

Simple Statistics

September Challenge 2017

Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums

Total Problems Solved: 27