Tarun Khullar

• Username: 5★roll_no_1
• Country:  India
• Student/Professional:Professional
• Organisation:Google
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

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

Rating Graph

No. of Contests Participated: 29

Current Ratings Graph Old Ratings Graph

2181 (+17)RatingProvisional
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November Cook-Off 2019 Division 1(2019-11-18 00:00:00)

Global Rank:   32

Cheated in:   

Ratings System Update

(2019-11-18 00:00:00)

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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2181 (-25)RatingProvisional
Rating i Provisional Rating, click to know more

November Cook-Off 2019 Division 1(2022-12-20 00:00:00)

Global Rank:   32

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 (29)

November Challenge 2017

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

December Cook-Off 2017

Beautiful Array

December Lunchtime 2017

Days in Month

January Challenge 2018

Maximum Score

October Mega Cook-Off 2018 Division 1

Binary Nim 2, Ada and the Staircase, Pumping Water

November Cook-Off 2018 Division 1

Beautiful Garland

August Challenge 2018 Division 2

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

September Challenge 2018 Division 2

Magician versus Chef, War of XORs, Chef and Adventures, Table Game, Bad Shuffle

November Challenge 2018 Division 1

Appy Loves One, Good Median, Chef, Primes and Trees (Challenge)

September Lunchtime 2018 Division 2

Chef Restaurant , Opposite Cites, Judging Delay

November Lunchtime 2018 Division 1

Beats and Pieces, Useful Number

Encoder (Rated for Division 2)

Knight Chess

December Lunchtime 2018 Division 1

Choosing from Buckets, Age Calculator

January Challenge 2019 Division 1

A Pizza Slice, (Challenge) Chef and Matching Game, Distinct Pairs, Partition the Graph, Different Neighbours, Yet Another Problem About Sequences

Plinth-Enigma'19 LNMIIT Techfest - (Rated for all)

XOR! Wait for it, Return of the Gargoyle King, Ross goes for Shopping, Summation over nCr, Sherlock and His Device

January Lunchtime 2019 Division 1

Distances, Wanderer, Rooks

February Challenge 2019 Division 1

Appy and Contest, Yet Another Tree Problem, Art of Balance, Chef and Secret Ingredients, Guess It Right, Xor Decomposition, Manhattan Rectangle

March Cook-Off 2019 Division 1

XOR N-bonacci Sequence, Markers and Caps, Music Shopping

March Lunchtime 2019 Division 1

Corrupted Seven-Segment Display

Coders' Legacy 2019 (Rated for all)

Bathwater, IPL and RCB, Up for a Game

April Cook-Off 2019 Division 1

Pied Piper vs Hooli

April Lunchtime 2019 Division 1

Firdavs and Planet F, Minimum Sum, Dream Problem

May Cook-Off 2019 Division 1

Misha and Nice Sets, Expected Xor

June Cook-Off 2019 Division 1

Zawad and Index Sum, Ants and Anteaters, Drink Slush

July Lunchtime 2019 Division 1 (Unrated)

Delete a Subarray, Professor on a Trip, Two-lane Road

August Cook-Off 2019 Division 1

Rich Substrings

September Mega Cook-Off 2019 Division 1

Angry Grandfather

September Lunchtime 2019 Division 1

All Substrings, Ice Cream Queue, Treeversion, Find the Sum

October Mega Cook-Off 2019 Division 1

D-Or

November Cook-Off 2019 Division 1

The Biggest Restaurant, Robots in Chefland

International Coding League 2019 (Rated for Division 2)

Earning A Profit , A Weird Device, FlatLand

Dementia 2019 (Rated for Division 2)

A Game of Primes, Surgical Strikes, BLACK LINE

Biteration #2 (Rated for Division 2)

A - Books, F - Random Strings, C - Chef and Maths

Exun Programming Prelims 2019 (Rated for all)

Weird Modulo Problem , Tennis Tournament, Chipped Tree, Yet Another Partition Problem

Total Problems Solved: 624