Anirban Aditya Halder

• Username: 2★banboy38
• 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: 12

Current Ratings Graph Old Ratings Graph

1599 (+11)RatingProvisional
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May Challenge 2021 Division 2 (Rated)(2021-05-17 15:00:02)

Global Rank:   2774

Cheated in:   

Ratings System Update

(2021-05-17 15:00:02)

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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1599 (-75)RatingProvisional
Rating i Provisional Rating, click to know more

May Challenge 2021 Division 2 (Rated)(2022-12-20 00:00:00)

Global Rank:   2774

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)

December Challenge 2020 Division 2

Vaccine Production, Vaccine Distribution, Even Pair Sum

December Cook-Off 2020 Division 2

Catch the Thief, Minimum Attendance Requirement

December Lunchtime 2020 Division 2 (Unrated)

Sed Sequences, One Zero Swaps

Byterace IIT Patna Division 2 (Rated)

The Begining Era Of Cyberverse

January Challenge 2021 Division 3

Point Of Impact, Encoded String, Chef and Division 3, Fair Elections

January Cook-Off 2021 Division 3

Distinct Pair Sums, Password

January Lunchtime 2021 Division 3 (Unrated)

Ashishgup and Interviews, Pair Me, Binary Subsequence, Even Differences, Even Sum

February Challenge 2021 Division 3

Highest Divisor, Maximise Function, Frog Sort, Chef and Meetings

February Lunchtime 2021 Division 2

Coprime Range

CodeChef Div 3 Rated Contest 2021 Division 3

Rectangle, Chef and Patients, Body Mass Index, Total Score

March Challenge 2021 Division 2

Space Arrays, No Time to Wait, Paparazzi Gennady, College Life 4, Chef and Groups, Interesting XOR!

March Lunchtime 2021 Division 2

Dinner by Candlelight, Racing, Lunchtime

April Challenge 2021 Division 2

Chef and Dice

May Challenge 2021 Division 2 (Rated)

Xor Equality, Tic Tac Toe, Modular Equation

June Challenge 2021 Division 2 (Unrated)

Bitwise Tuples, Bella ciao, Summer Heat

Total Problems Solved: 61