Abhinay Kumar

• Username: 4★ratan_sir
• Country:  India
• Student/Professional:Student
• Institution:National Institute of Technology, Kurukshetra Thanesar, Haryana, India
• 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: 26

Current Ratings Graph Old Ratings Graph

1909 (-26)RatingProvisional
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Starters 164 (Rated)(2024-12-11 22:00:02)

Global Rank:   812

Cheated in:   

Ratings System Update

(2024-12-11 22:00:02)

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1975 (+17)RatingProvisional
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Starters 49 Division 2 (Rated)(2022-12-20 00:00:00)

Global Rank:   145

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 (26)

October Challenge 2020 Division 2

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

November Challenge 2020 Division 2

Restore Sequence, Ada and Dishes, Magical Candy Store, Iron, Magnet and Wall

January Challenge 2021 Division 2

Chef and Ants, Watching CPL, Fair Elections

December Challenge 2020 Division 2

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

November Lunchtime 2020 Division 2

Gasoline Introduction

February Challenge 2021 Division 2

Frog Sort, Team Name, Prime Game, Multiple Games, XOR Sums, Maximise Function

May Challenge 2021 Division 2 (Rated)

Valid Paths, Modular Equation, Tic Tac Toe, An Interesting Sequence, Tree House, Xor Equality

SnackDown 2021 - Online Qualifiers

Lucky Number

CodeChef Starters 17 Division 2 (Rated)

Binary Inversion, GCD of Prefixes, String Game, Partition It, New Piece

Starters 47 Division 2 (Rated)

Similar Heights, End Sorted, Copy and Push Back

July Lunchtime 2022 Division 2 (Rated)

Easy Pronunciation, Yet Another Palindrome Making Problem, Maximum Median Matching, Largest Family

Starters 48 Division 2 (Rated)

Fill The Grid, Make Palindrome 2, Positive array

Starters 49 Division 2 (Rated)

Split The String, Valid Minimum, High Frequency, Monks

Starters 81 Division 2 (Unrated)

Good XOR, Distinct Matrix, Divide Pages

Starters 82 Division 2 (Rated)

Find eX, Difference Matrix, MIN To MAX

Starters 85 Division 1 (Rated till 6 stars)

Crazy Bishops on Chessboard, Efficient PAN Linking, TripTastic

Starters 86 Division 1 (Rated for All)

Largest Y

Starters 87 Division 2 (Rated)

Inversions of subsequences, AB plus C, Existence

Starters 83 Division 2 (Rated)

Construct String, Order by XOR, Rotate to Minimum, Restoration

Starters 90 Division 2 (Rated)

Crushed Apples and a Balance Scale, Printing Binary Array, Anti Palindrome

Starters 92 Division 2 (Rated)

Rectangular Tiling, Dotify Playlist, Distance Coloring

Starters 93 Division 2 (Rated)

Break Free, NASA, Problem

Starters 99 Division 2 (Rated)

Segment Three, Two Piles, Card Swipe, Exclusion-Inclusion

Starters 124 Division 1 (Rated till 5-Stars)

Swap and Unite, Make It One

Starters 125 Division 2 (Rated)

Bucket Game, Binary Minimal, Fake Certificate

Starters 126 Division 2 (Rated)

Freedom, Permutation Disturbance, Triangular Swaps

Starters 128 Division 2 (Rated)

MEXimize the Array, Disjoint Non-Decreasing Array

Starters 164 (Rated)

Halloween Array, Swap and Flip

Total Problems Solved: 128