Raja Laha

• Username: 3★raja11sep
• Country:  India
• Student/Professional:Student
• Institution:Indian Institute of Technology Kharagpur West Bengal, 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: 15

Current Ratings Graph Old Ratings Graph

1642 (+28)RatingProvisional
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August Lunchtime 2020 Division 2(2020-08-29 22:30:02)

Global Rank:   1333

Cheated in:   

Ratings System Update

(2020-08-29 22:30:02)

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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1642 (-92)RatingProvisional
Rating i Provisional Rating, click to know more

August Lunchtime 2020 Division 2(2022-12-20 00:00:00)

Global Rank:   1333

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 (15)

November Challenge 2019 Division 2

Hard Sequence

January Challenge 2020 Division 2

Chef and Dynamo, Breaking Bricks

February Challenge 2020 Division 2

No Change Required, School of Geometry, Hard Cash

March Challenge 2020 Division 2

Ada Bishop 2, Pintu and Fruits

April Challenge 2020 Division 2

Unit GCD, COVID Pandemic and Long Queue, Sell All the Cars, Strange Number

May Challenge 2020 Division 2

Coronavirus Spread, Isolation Centers

January Lunchtime 2020 Division 2

Bob and His Friends

April Lunchtime 2020 Division 2

Chef in Fantasy League

June Challenge 2020 Division 2

The Tom and Jerry Game!, Chef and Price Control, Chef and String, Chef and Icecream, Even Matrix

July Challenge 2020 Division 2

Ada King, Chefina and Swaps, Missing a Point, Chef and Card Game, Chef and Strings

July Lunchtime 2020 Division 2

Chef and Steps, Maximum Candies

August Lunchtime 2020 Division 2

Game on a Strip, Mode of Frequencies

RECode 12.0 (Rated for all)

Chef and String, Chef and Numbers

Code Ensemble (Rated for Division 2)

Priya and AND, Help Martha

Total Problems Solved: 226