Dheeraj Singh

• Username: 3★djrockin
• Country:  India
• Student/Professional:Student
• Institution:Institute of Engineering and Technology, Lucknow Uttar Pradesh, 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: 49

Current Ratings Graph Old Ratings Graph

1728 (-33)RatingProvisional
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December Challenge 2018 Division 2(2018-12-18 01:02:02)

Global Rank:   4343

Cheated in:   

Ratings System Update

(2018-12-18 01:02:02)

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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1728 (+101)RatingProvisional
Rating i Provisional Rating, click to know more

December Challenge 2018 Division 2(2022-12-20 00:00:00)

Global Rank:   4343

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 (49)

October Challenge 2014

Magical Girl and Colored Liquid Potions, Chef and Ground

November Challenge 2014

The Spelling Problem

October Lunchtime 2014

Tanu and Head-bob

January Challenge 2015

Chef and Stones, Sereja and Votes

January Cook-Off 2015

Suraj goes shopping

January Lunchtime 2015

Piece of cake

March Challenge 2015

Chef and Notebooks, Sign Wave

April Challenge 2015

Broken Telephone, Chef and Piano Scales, Chef and Interview

June Challenge 2015

Chef and Memory Limit

July Challenge 2015

Bread, Na2a and lucky stone, Chef and Cube

August Challenge 2015

Gravity Guy, Cooking Machine

September Challenge 2015

Lighthouses, Bank robbery, Chain of Doughnuts, Count Steps in Matrix

October Challenge 2015

Time measure, Count Subarrays, Who dares to be a millionaire

November Challenge 2015

Eugene and function, Chef and cakes

December Challenge 2015

Chef and the stones, Oracle Devu and Longest Common Subsequence

February Cook-Off 2015

Fit Squares in Triangle

April Cook-Off 2015

Equality, Version Control System

August Cook-Off 2015

Chef and the Wildcard Matching

November Cook-Off 2015

Sereja and Array and Subtracting

February Lunchtime 2015

Lucky Four

April Lunchtime 2015

Tickets

May Lunchtime 2015

Devu and Grapes

July Lunchtime 2015

Greedy puppy

August Lunchtime 2015

Churu and lost string, Minimum Maximum

September Lunchtime 2015

Sum of palindromic numbers

October Lunchtime 2015

emitL

January Long Challenge 2016

Rupsa and the Game, Devu and Perfume, Churu and Balls, Chef and Time Machine

February Challenge 2016

Chef and Strange Operations, Devu and a light discussion, Rectangles of Love, Chef-Detective

April Challenge 2016

Chef And Magical Path, Chef And Coloring, Chef and Ballons, Help Watson Escape

June Challenge 2016

Chef and Coins Game, Devu and an Array

January Cook-Off 2016

Chef and Fruits

February Cook-Off 2016

Puppy and Sum

March Cook-Off 2016

Digital clock, Alternating subarray prefix

July Cook-Off 2016

Chef and Numbers, Chef and Proportion

March Lunchtime 2016

Simple Statistics

June Challenge 2017

A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets

July Challenge 2017

Chef and Sign Sequences, Whats in the Name, Calculator

August Cook-Off 2017

Real obtuse, From heaven to earth

December Cook-Off 2017

Football Match

August Lunchtime 2017

Mathison and the Dynamo shuffle, Mathison and pangrams

December Lunchtime 2017

Days in Month, Strange Function

May Cook-off 2018 Division 2

Best Cake Ever, Secret Recipe

December Challenge 2018 Division 2

Chef and Interactive Contests, Chef and An Ideal Problem

Total Problems Solved: 144