Rajat Kumar Singh

• Username: 4★bug_20
• 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 2025 (Jan-Jun)2024 (Jul-Dec)2024 (Jan-Jun)

Rating Graph

No. of Contests Participated: 24

Current Ratings Graph Old Ratings Graph

1875 (+8)RatingProvisional
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June Lunchtime 2021 Division 2(2021-06-26 22:45:02)

Global Rank:   814

Cheated in:   

Ratings System Update

(2021-06-26 22:45:02)

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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1875 (+0)RatingProvisional
Rating i Provisional Rating, click to know more

June Lunchtime 2021 Division 2(2022-12-20 00:00:00)

Global Rank:   814

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 (24)

April Challenge 2020 Division 2

Squared Subsequences, Strange Number, COVID Pandemic and Long Queue, Unit GCD, Sell All the Cars

March Cook-Off 2020 Division 2

Find Your Gift, Box of Chocolates

April Cook-Off 2020 Division 2

Matrix Decomposition, Lift Requests

May Cook-Off 2020 Division 2

Chef and Recipe, Chef, Chefina and Their Friendship

March Lunchtime 2020 Division 2 (Unrated)

Good Prefix

May Lunchtime 2020 Division 2

Weird Walk, Lost Weekends

June Challenge 2020 Division 2

Covid Sampling (Challenge), Chef and Price Control, Chef and String, Chef and Icecream, The Tom and Jerry Game!, Even Matrix

July Challenge 2020 Division 2

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

July Cook-Off 2020 Division 1

Even-tual Reduction, OR-thodox Distinction

August Cook-Off 2020 Division 1

Polygon Relationship

August Lunchtime 2020 Division 1

Alien Invasion

June Cook-Off 2020 Division 2

Max Mex, Cache Hits

June Lunchtime 2020 Division 2

Chef and Demonetisation, Increasing Decreasing

December Cook-Off 2020 Division 1

Self-Destructing Strings, Circle of Chaos

December Lunchtime 2020 Division 1 (Unrated)

Three Letters, One Zero Swaps

January Lunchtime 2021 Division 2 (Unrated)

Binary Subsequence, Even Differences, Even Sum

November Cook-Off 2020 Division 1

Flip the String, Chef and IPC Certificates

Coders' Legacy (Rated for all)

Chef vs Doof, Doof on Cartesian, Doof fires Brackets

September Lunchtime 2020 Division 1

Root the Tree

April Cook-Off 2021 Division 2

OR of ANDs, Chocolate Monger

SPYBITS IIT BHU Division 2 (Rated)

B - Valentine Couples, A - Save Water Save Life

May Cook-Off 2021 Division 2

The Last Problem, Double Burgers, Chef and Subarrays

May Lunchtime 2021 Division 2

Charges, Tom And Jerry 1, Total Components

June Cook-Off 2021 Division 2

Binary String on Steroids, The Wave

June Lunchtime 2021 Division 2

From Rational to Binary, False Number, Unpleasant Ones

Total Problems Solved: 72