Niraj Singh

• Username: 2★nirajnr7
• Country:  India
• Student/Professional:Student
• Institution:National Institute of Technology, Jamshedpur 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: 35

Current Ratings Graph Old Ratings Graph

1597 (-38)RatingProvisional
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Starters 149 (Rated)(2024-08-28 22:00:02)

Global Rank:   2065

Cheated in:   

Ratings System Update

(2024-08-28 22:00:02)

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1635 (-278)RatingProvisional
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October Challenge 2020 Division 2(2022-12-20 00:00:00)

Global Rank:   78

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 (35)

July Cook-Off 2018 Division 2

Encoding Message

September Mega Cook-Off 2018 Division 2

ATM Machine

November Cook-Off 2018 Division 2

Truth and Dare, Beautiful Garland

December Cook-Off 2018 Division 2

Camp Or Not

July Challenge 2018 Division 2

Magic Set, Strike or Spare

August Challenge 2018 Division 2

Spell Bob

September Challenge 2018 Division 2

Magician versus Chef, War of XORs, Chef and Adventures

December Challenge 2018 Division 2

Chef and An Ideal Problem, Chef and Interactive Contests

November Challenge 2018 Division 2

Chef and Ridges, Chef and Difficult Contests

October Challenge 2018 Division 2

Chef and Serves, Byte to Bit

June Lunchtime 2018 Division 2

Counting Pretty Numbers

Code Melange (Rated)

The Deadly Sin, Candy Love

December Lunchtime 2018 Division 2

Print Pattern

January Challenge 2019 Division 2

Different Neighbours, Fancy Quotes, Chef and Modulo Game, Lucky Number Game, Distinct Pairs

February Challenge 2019 Division 2

Manhattan Rectangle, Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, Art of Balance, Deputy Chef

March Challenge 2019 Division 2

Chef and Number Game

April Challenge 2019 Division 2

Friend or Girlfriend, Maximum Remaining

June Challenge 2019 Division 2

Road Signs, Guddu on a Date

July Challenge 2019 Division 2

Guess the Prime!, Parity Again, Minimum and Maximum, Chef and Mean

August Challenge 2019 Division 2

Dilemma, Distribute Apples, Football

September Challenge 2019 Division 2

Easy Fibonacci, Chef and Interesting Subsequences

March Challenge 2020 Division 2

Pintu and Fruits

April Challenge 2020 Division 2

Strange Number, Sell All the Cars, COVID Pandemic and Long Queue

May Challenge 2020 Division 2

Isolation Centers, Coronavirus Spread

June Challenge 2020 Division 2

Even Matrix, The Tom and Jerry Game!, Chef and Icecream, Chef and String, Chef and Price Control

July Challenge 2020 Division 2

Chef and Card Game, Chef and Strings, Doctor Chef, Chef and Dragon Dens, Chefina and Swaps, Ada King, Missing a Point

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

July Lunchtime 2020 Division 2

Chef and Steps

June Cook-Off 2020 Division 2

Max Mex, Cache Hits

June Lunchtime 2020 Division 2

Chef and Demonetisation, Increasing Decreasing

October Challenge 2020 Division 2

Positive AND, Replace for X, D-Dimensional MST, Adding Squares, Covid Run, Chef and Easy Queries

Starters 149 (Rated)

Easy Subarray Sum, Maximise Sum

Total Problems Solved: 203