Rajbir Singh

• Username: 3★tomc
• Country:  Canada
• Student/Professional:Professional
• Organisation:Samsung Research Institute Delhi
• 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: 20

Current Ratings Graph Old Ratings Graph

1649 (+6)RatingProvisional
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August Long Challenge 2017(2017-08-18 15:00:00)

Global Rank:   3502

Cheated in:   

Ratings System Update

(2017-08-18 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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1649 (+56)RatingProvisional
Rating i Provisional Rating, click to know more

August Long Challenge 2017(2022-12-20 00:00:00)

Global Rank:   3502

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 (20)

January Challenge 2015

Chef and Stones

January Lunchtime 2015

Piece of cake

February Challenge 2015

Chef and Chain

March Challenge 2015

Chef and Notebooks, Devu and his Class, Sign Wave

April Challenge 2015

Chef and Interview, Broken Telephone, Chef and Piano Scales

May Challenge 2015

Chef and new recipe

August Challenge 2015

Way Out, Aditi and Magic Trick, Cooking Machine

October Challenge 2015

Time measure, Count Subarrays, Who dares to be a millionaire, Spheres, Rupsa and Equilateral Triangle

December Challenge 2015

Chef and the stones, Chef and Filters, Oracle Devu and Longest Common Subsequence

February Lunchtime 2015

Lucky Four, The Warehouse

November Lunchtime 2015

Query over Matrix, Black And White Cells

January Long Challenge 2016

Rupsa and the Game, Churu and Balls, Devu and Perfume

April Challenge 2016

Help Watson Escape, Chef And Coloring, Chef And Magical Path, Chef and Ballons

June Challenge 2016

Chef And Binary Operation, Chef and Coins Game

August Long Challenge 2017

Chef and Rainbow Array, Chef and Mover, Greedy Candidates

Total Problems Solved: 44