Gulshan Rajak

• Username: 4★rajak
• Country:  India
• Student/Professional:Student
• Institution:Sardar Vallabhbhai National Institute of Technology, Surat Gujarat, 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: 32

Current Ratings Graph Old Ratings Graph

1885 (-34)RatingProvisional
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March Cook-off 2018 Division 1(2018-03-19 00:00:00)

Global Rank:   348

Cheated in:   

Ratings System Update

(2018-03-19 00:00:00)

This is the difference due to changing the rating system.This graph is not updated after 20th Dec 2022. Know more

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1885 (-50)RatingProvisional
Rating i Provisional Rating, click to know more

March Cook-off 2018 Division 1(2022-12-20 00:00:00)

Global Rank:   348

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 (32)

October Challenge 2013

Helping Lira

January Challenge 2014

Please like me, Chef and Feedback

January Cook-off 2014

Chef and the Cake I

February Cook-Off 2014

Chef and Remissness, Chef and Kingship

March Cook-Off 2014

Dividing Stamps

June Cook-Off 2014

Counting Flags, Painting

July Cook-Off 2014

Copy-Paste, Sum Queries

November Cook-Off 2014

Brackets

February Challenge 2014

Longest Common Pattern, Colored Array, Little Elephant and Subarrays, Make Him Happy

April Challenge 2014

Sereja and Permutation, Counting Matrices, Farmer Feb, Chef and Digits, Divide the Tangerine, Shortest Path in Binary Trees

June Challenge 2014

Chef and Subarray, Forgot Password, Guessing Game

July Challenge 2014

Garden Game, Chef and Frogs, Chef and Rectangle Genome, Count Substrings, Reach The Point

August Challenge 2014

Chef and Gift, Cleaning Tables, The Leaking Robot, Mountain Holidays 2

September Challenge 2014

Factorisation, Chef and Rainbow Array - 2, Chef and Left-Right, Chef and sequence, Fun with Rotation, Flooring

October Challenge 2014

DevuLand, Dinosaurs and Laddus, Magical Girl and Colored Liquid Potions, Chef and Painting, Chef and Ground, Remy paints the fence, Chef and Square

June Lunchtime 2014

The Smallest Pair

August Lunchtime 2014

Harrenhal

September Lunchtime 2014

Chef and easy problem

October Lunchtime 2014

Tanu and Head-bob

January Challenge 2015

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

February Challenge 2015

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

August Challenge 2015

Gravity Guy, Chef and insomnia, Aditi and Magic Trick, Cooking Machine, Social Cluster, Way Out, Devu And Churu

September Challenge 2015

Lighthouses, Chef and Chetris, Cracking the Code, Bank robbery, Terrible vectors, Count Steps in Matrix, Nikitosh and xor, Chain of Doughnuts, Filling the maze

February Cook-Off 2015

Fit Squares in Triangle

May Cook-Off 2015

Devu and friendship testing

August Cook-Off 2015

Chef and the XORed Number , Chef and the Wildcard Matching

June Lunchtime 2015

Chef and Two Strings

March Cook-off 2018 Division 1

Chef Goes to the Cinema, Chef Restores a Matrix

Total Problems Solved: 162