Tanwir Singh

• Username: 4★coder_tanz17
• Country:  India
• Student/Professional:Student
• Institution:Indian Institute of Technology Kharagpur West Bengal, India
• CodeChef Pro Plan: No Active Plan. View Details

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Last 6 Months 2026 (Jan-Jun)2025 (Jul-Dec)2025 (Jan-Jun)

Rating Graph

No. of Contests Participated: 17

Current Ratings Graph Old Ratings Graph

1838 (-13)RatingProvisional
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Starters 70 Division 2 (Rated)(2022-12-21 23:00:02)

Global Rank:   899

Cheated in:   

Ratings System Update

(2022-12-21 23:00:02)

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1851 (-11)RatingProvisional
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Starters 69 Division 2 (Rated)(2022-12-20 00:00:00)

Global Rank:   1005

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 (17)

August Challenge 2020 Division 2

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

September Challenge 2020 Division 2

A Problem on Sticks, Ada Matrix

October Challenge 2020 Division 2

Positive AND, Covid Run

December Challenge 2020 Division 2

Vaccine Distribution, Vaccine Production, Even Pair Sum, Positive Prefixes, Hail XOR

November Lunchtime 2020 Division 2

Gasoline Introduction

February Challenge 2021 Division 2

Frog Sort, Team Name, Prime Game, Maximise Function

March Challenge 2021 Division 2

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

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

SnackDown 2021 - Online Qualifiers

Lucky Number

SnackDown 2021 - Online Round 1A

Dance Moves, Min Max LCM

SnackDown 2021 - Online Round 1B

Queens Placement , Largest Laddu, Help Nishant

May Cook-Off 2022 Division 2 (Rated)

Doubled Distances

Starters 57 Division 2 (Unrated)

Even Splits, Maximum Expression, Two Different Palindromes

Starters 59 Division 2 (Rated)

Maximum Subarray , Suspense String, Confusing Concatenations, Alternative Sufferings

Starters 60 Division 2 (Rated)

Distinct Numbers, Red Green Grids, Yet Another Palindrome Problem, Palindrome Flipping

Starters 61 Division 2 (Rated)

Palindrome Partition, Minimise LCS, Weird Subarrays, Red Blue Flowers, Subarray Removal

Starters 62 Division 2 (Rated)

Pythagorean Pair, Make Multiple, Final Sum, Sorted Substrings

Starters 64 Division 2 (Rated)

Luigi and Uniformity, Range Assign, Number of Distinct Elements Minimize, Prime Factor Division, Distinct Neighbours

Starters 68 Division 2 (Rated)

Boring String, XOR Product, Expense List, Interesting Array, Make Money

Starters 69 Division 2 (Rated)

Akash and Dinner, Distinct Sequence

Starters 70 Division 2 (Rated)

Minimum distance between 1s, Prime Reversal, Frequency Array Retrieval

Total Problems Solved: 108