Niraj Kumar Das

• Username: 4★niraj_kr_das
• Country:  India
• Student/Professional:Professional
• Organisation:The Data Team
• 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: 19

Current Ratings Graph Old Ratings Graph

1804 (+53)RatingProvisional
Rating i Provisional Rating, click to know more

December Challenge 2015(2015-12-14 15:00:00)

Global Rank:   319

Cheated in:   

Ratings System Update

(2015-12-14 15:00:00)

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1804 (-137)RatingProvisional
Rating i Provisional Rating, click to know more

December Challenge 2015(2022-12-20 00:00:00)

Global Rank:   319

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 (19)

January Challenge 2014

Chef and Feedback, Please like me

March Cook-Off 2014

Dividing Stamps

July Cook-Off 2014

Copy-Paste, Sum Queries

November Cook-Off 2014

Brackets

May Challenge 2014

Chef-jumping, Stone

June Challenge 2014

Chef and Subarray, Guessing Game

August Challenge 2014

Chef and Reversing, The Leaking Robot, Chef and Gift

September Challenge 2014

Factorisation, Fun with Rotation, Chef and sequence, Chef and Left-Right

October Challenge 2014

Chef and Ground, Magical Girl and Colored Liquid Potions

November Challenge 2014

Chef and Segment Game, Chef and Words, Distinct Characters Subsequence, Chef and Red Black Tree, Let us construct palindrome

June Lunchtime 2014

The Smallest Pair

January Challenge 2015

Chef and A Large Permutation, Chef and Stones, Sereja and Votes, One Dimensional Kingdoms, Gcd Queries, Sereja and Number Division 2

February Challenge 2015

Jigsaw Puzzle Solving, Chef and Equality, Let us play with rank list, Chef and Strings, Chef and Complex String Coverage, Chef and Strange Formula, Chef and Chain

March Challenge 2015

Chef and Notebooks

April Challenge 2015

Count Sequences, Chef and Interview, Broken Telephone, Division of Lands, Chef and Piano Scales

December Challenge 2015

Chef and the stones, Plane Division, Oracle Devu and Longest Common Subsequence, Chef and Filters

Total Problems Solved: 66