Harjot Singh

• Username: 4★serendipity97
• Country:  India
• Student/Professional:Student
• Institution:Indian Institute of Information Technology, Lucknow Uttar Pradesh, India
• 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: 14

Current Ratings Graph Old Ratings Graph

1872 (+27)RatingProvisional
Rating i Provisional Rating, click to know more

August Lunchtime 2020 Division 1(2020-08-29 22:30:00)

Global Rank:   235

Cheated in:   

Ratings System Update

(2020-08-29 22:30:00)

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?

1872 (-131)RatingProvisional
Rating i Provisional Rating, click to know more

August Lunchtime 2020 Division 1(2022-12-20 00:00:00)

Global Rank:   235

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 (14)

September Challenge 2018 Division 2

War of XORs, Magician versus Chef, Chef and Adventures

October Challenge 2018 Division 2

Chef and Serves, Byte to Bit

Encoder (Rated for Division 2)

Knight Chess, Paint the Wall

February Cook-Off 2019 Division 2

Chef and Secret Password, Buying New Tablet, Chef and Party

March Cook-Off 2019 Division 2

XOR N-bonacci Sequence, UEFA Champions League

March Lunchtime 2019 Division 2

Testing Robot, Pogo Stick Competition

June Challenge 2019 Division 2

Sum and GCD, Chef and Ingredients, Guddu on a Date, Chef and Proxy, Road Signs, Lent Money

October Challenge 2019 Division 1

Even Edges, Chef and Maximum Star Value, Array Modification

February Challenge 2020 Division 1

(Challenge) Raisins, Long Contest and Cook Off Overlaps, No Change Required, Chef and Railway Stations

May Lunchtime 2020 Division 1

Convert the String

August Lunchtime 2020 Division 1

Game on a Strip, Alien Invasion

June Lunchtime 2020 Division 2

Maximum AND, Chef and Demonetisation, Increasing Decreasing, Gold Mining

Total Problems Solved: 77