Unknown21

• Username: 4★hello_kitty
• Country:  India
• Student/Professional:Student
• Institution:Indian Institute of Technology Dhanbad
• 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: 12

Current Ratings Graph Old Ratings Graph

1850 (+37)RatingProvisional
Rating i Provisional Rating, click to know more

December Challenge 2020 Division 1(2020-12-14 15:00:00)

Global Rank:   150

Cheated in:   

Ratings System Update

(2020-12-14 15:00:00)

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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1850 (-170)RatingProvisional
Rating i Provisional Rating, click to know more

December Challenge 2020 Division 1(2022-12-20 00:00:00)

Global Rank:   150

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 (12)

May Challenge 2020 Division 2

Isolation Centers, Coronavirus Spread

April Cook-Off 2020 Division 2

Matrix Decomposition, Lift Requests

May Cook-Off 2020 Division 2

Chef and Recipe

June Challenge 2020 Division 2

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

September Challenge 2020 Division 2

Coronavirus Spread 2, Ada Matrix, Find XOR, A Problem on Sticks, Chefina and Swap, Chef and Trump Cards

July Lunchtime 2020 Division 2

Chef and Steps

August Lunchtime 2020 Division 2

Mode of Frequencies, Ratings and Rankings

June Cook-Off 2020 Division 2

Cache Hits, Max Mex

June Lunchtime 2020 Division 2

Increasing Decreasing, Chef and Demonetisation

December Challenge 2020 Division 1

Hail XOR, Calculus, String Operations, Positive Prefixes, Even Pair Sum

October Lunchtime 2020 Division 1

Chef Likes Good Sequences, Chef Is Just Throwing Random Words

Code Ensemble (Rated for Division 2)

Priya and AND, Help Martha

Total Problems Solved: 111