Koustav Roy

• Username: 2★kroy2905
• Country:  India
• Student/Professional:Student
• Institution:Kalyani Government Engineering College
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

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

Rating Graph

No. of Contests Participated: 19

Current Ratings Graph Old Ratings Graph

1522 (+6)RatingProvisional
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July Long Two 2022 Division 3 (Rated)(2022-07-25 15:00:04)

Global Rank:   1260

Cheated in:   

Ratings System Update

(2022-07-25 15:00:04)

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1522 (-39)RatingProvisional
Rating i Provisional Rating, click to know more

July Long Two 2022 Division 3 (Rated)(2022-12-20 00:00:00)

Global Rank:   1260

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 (19)

September Lunchtime 2018 Division 2

Judging Delay

April Challenge 2020 Division 2

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

May Challenge 2020 Division 2

Triple Sort, Coronavirus Spread, Isolation Centers

February Cook-Off 2020 Division 2

Tax Slabs

April Lunchtime 2020 Division 2

Chef in Fantasy League

May Lunchtime 2020 Division 2

Weird Walk, Lost Weekends

June Challenge 2020 Division 2

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

July Challenge 2020 Division 2

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

August Challenge 2020 Division 2

Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess, Smallest KMP

October Challenge 2020 Division 2

Chef and Easy Queries, Covid Run, Positive AND, Replace for X

February Challenge 2021 Division 2

Maximise Function

March Challenge 2021 Division 3

Interesting XOR!, Chef and Groups, Space Arrays, No Time to Wait

SnackDown 2021 - Online Qualifiers

Lucky Number, Maximum Number Of Distinct Elements

October Lunchtime 2021 Division 3

Alternating Work Days, Exactly N plus 1 Values, Problem Category

SnackDown 2021 - Online Round 1A

Min Max LCM, Dance Moves, Round Robin Ranks

SnackDown 2021 - Online Round 1B

Queens Placement , Largest Laddu, Help Nishant

November Challenge 2021 Division 3 (Rated)

Weird Palindrome Making, Hill Sequence, Equal Coins, Which Fuel is Cheaper

Starters 42 Division 2 (Rated)

Minimum or Maximum, Divisible by 3

July Long Two 2022 Division 3 (Rated)

Maximize Difference, Chef in his Office, To Divide or Not To Divide, Sum of Product 1, Hungry Chef

Total Problems Solved: 69