Abhishek Kumar

• Username: 3★hacker619
• Country:  India
• Student/Professional:Student
• Institution:Birla Institute of Technology Mesra Ranchi, Jharkhand, 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: 18

Current Ratings Graph Old Ratings Graph

1687 (-10)RatingProvisional
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December Lunchtime 2021 Division 2(2021-12-25 23:00:02)

Global Rank:   2184

Cheated in:   

Ratings System Update

(2021-12-25 23:00:02)

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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1687 (-31)RatingProvisional
Rating i Provisional Rating, click to know more

December Lunchtime 2021 Division 2(2022-12-20 00:00:00)

Global Rank:   2184

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 (18)

February Challenge 2020 Division 2

School of Geometry, The Theatre Problem, (Challenge) Raisins, Hard Cash

April Challenge 2020 Division 2

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

May Challenge 2020 Division 2

Coronavirus Spread, Isolation Centers

April Cook-Off 2020 Division 2

Lift Requests

May Lunchtime 2020 Division 2

Weird Walk, Lost Weekends

June Challenge 2020 Division 2

Chef and Price Control, Chef and String, Covid Sampling (Challenge), Chef and Icecream, The Tom and Jerry Game!, Even Matrix

July Challenge 2020 Division 2

Ada King, 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

June Cook-Off 2020 Division 2

Cache Hits, Max Mex

June Lunchtime 2020 Division 2

Chef and Demonetisation, Increasing Decreasing

January Challenge 2021 Division 2

Fair Elections

January Lunchtime 2021 Division 2 (Unrated)

Even Differences, Even Sum, Binary Subsequence

January Cook-Off 2021 Division 3

Prime Tuples, Distinct Pair Sums, Maximise Islands, Password

February Challenge 2021 Division 2

Frog Sort, Prime Game, Maximise Function

March Cook-Off 2021 Division 2

Consecutive Deletions, Matrix XOR, Guess the Number

March Challenge 2021 Division 2

College Life 4, Space Arrays, Paparazzi Gennady, Consecutive Adding, Interesting XOR!

March Lunchtime 2021 Division 2

Dinner by Candlelight, Racing, Lunchtime

April Challenge 2021 Division 2

Worthy Matrix, Chef and Dice

SnackDown 2021 - Online Qualifiers

Lucky Number

SnackDown 2021 - Online Round 1A

Round Robin Ranks , Dance Moves, Min Max LCM

December Lunchtime 2021 Division 2

Maximum Trio, Romantic Reversals

Total Problems Solved: 70