David Vulakh

• Username: 5★dvulakh
• Country:  United States
• Student/Professional:Student
• Institution:Massachusetts Institute of Technology Cambridge, Massachusetts, USA
• 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: 12

Current Ratings Graph Old Ratings Graph

2088 (+70)RatingProvisional
Rating i Provisional Rating, click to know more

January Challenge 2020 Division 1(2020-01-13 15:00:00)

Global Rank:   57

Cheated in:   

Ratings System Update

(2020-01-13 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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2088 (-191)RatingProvisional
Rating i Provisional Rating, click to know more

January Challenge 2020 Division 1(2022-12-20 00:00:00)

Global Rank:   57

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 (12)

February Challenge 2017

Chef and His Apartment Dues

February Cook-Off 2017

Download file, Cooking Game

April Challenge 2017

Dish Of Life, Similar Dishes

July Lunchtime 2017

Find the Maximum Value

April Challenge 2018 Division 2

Count Good Prefixes, Workers, Average of Pairs, Highway Crossing, Weight of Numbers, Cutting Plants, Chef and Array (Challenge)

January Challenge 2019 Division 1

Yet Another Problem About Sequences, Different Neighbours, Partition the Graph, Distinct Pairs, A Pizza Slice

February Challenge 2019 Division 1

Art of Balance, Maximize the Tax, (Challenge) Chef with Orchestra in the Kitchen, Chef and Secret Ingredients, Guess It Right, Manhattan Rectangle, Xor Decomposition

June Challenge 2019 Division 1

Lent Money, Chef and Ingredients, Chef and His Dish, Intersecting Paths, Sum and GCD, (Challenge) SnackDown 99

June Cook-Off 2019 Division 1

Ants and Anteaters, Drink Slush

June Lunchtime 2019 Division 1

Igzi and Burly Array

July Challenge 2019 Division 1

Hit the Coconuts, (Challenge) Codechef War II, Circular Merging, LOVEMUFFIN, Codechef War, Guess the Prime!

January Challenge 2020 Division 1

Chef and Dynamo, Doraemon, Doofish Matrix, Chefina and Prefix Suffix Sums, English, Chefland Army, (Challenge) Building Anthills

Total Problems Solved: 107