Ajay Kumar

• Username: 3★ajay_5097
• Country:  Netherlands
• Student/Professional:Professional
• Organisation:Facebook Inc.
• 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: 33

Current Ratings Graph Old Ratings Graph

1764 (+38)RatingProvisional
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December Cook-Off 2020 Division 2(2020-12-22 00:00:02)

Global Rank:   429

Cheated in:   

Ratings System Update

(2020-12-22 00:00:02)

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?

1764 (-46)RatingProvisional
Rating i Provisional Rating, click to know more

December Cook-Off 2020 Division 2(2022-12-20 00:00:00)

Global Rank:   429

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 (33)

March Challenge 2016

maximize the sum, Palindromic substrings

April Challenge 2016

Chef And Coloring

June Challenge 2016

Devu and an Array

September Challenge 2016

Chef and digits of a number, Faded Palindromes, Chef and calculation

July Lunchtime 2016

Drumpf for President!, Lumpy - The Bus Driver

August Lunchtime 2016

Studying Alphabet

January Challenge 2017

Cats and Dogs, Reservior

March Challenge 2017

Xenny and Alternating Tasks, Bear and Extra Number, Bandwidth of a matrix

January Lunchtime 2017

Nothing in Common

April Challenge 2017

Dish Of Life, Similar Dishes

June Challenge 2017

Xenny and Coin Rankings, A Good Set

September Challenge 2017

Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Fill The Matrix, Little Chef and Sums

October Challenge 2017

Max Mex, A Balanced Contest

March Cook-Off 2017

Safe Robot

September Cook-Off 2017

Subsequence Equality

December Lunchtime 2017

Days in Month

January Challenge 2018

K-Concatenation, Maximum Score, Rectangle, Partition the numbers

July Cook-Off 2018 Division 2

Encoding Message, OR Matrix

July Challenge 2018 Division 2

No Strings Attached, No Minimum No Maximum, Strike or Spare

August Challenge 2020 Division 2

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

September Challenge 2020 Division 2

Find XOR, Ada Matrix, A Problem on Sticks, Chefina and Swap

August Cook-Off 2020 Division 1

Polygon Relationship, Chef and Work, K-Foldable String

August Lunchtime 2020 Division 2

Game on a Strip, Mode of Frequencies

October Challenge 2020 Division 1

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

December Cook-Off 2020 Division 2

Self-Destructing Strings, Catch the Thief, Minimum Attendance Requirement

October Cook-Off 2020 Division 2

Split the Str Ing, Decreasing Srrnmieeda, Path-etic Sums

November Cook-Off 2020 Division 1

Flip the String, Chef and IPC Certificates

October Lunchtime 2020 Division 2

AND Plus OR, Chef Is Just Throwing Random Words, Chef and Subtree MEXs

September Cook-Off 2020 Division 2

Bulbs and Wires, Bowling Strategy

September Lunchtime 2020 Division 1

GCD operations, Root the Tree, Watermelon

Code Ensemble (Rated for Division 2)

Cherry and Bits, Priya and AND, Help Martha

Total Problems Solved: 140