black hat

• Username: 1★blackhat8840
• Country:  India
• Student/Professional:Student
• Institution:Thapar Institute of Engineering and Technology Patiala, Punjab
• 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: 36

Current Ratings Graph Old Ratings Graph

1210 (-42)RatingProvisional
Rating i Provisional Rating, click to know more

May Challenge 2021 Division 3 (Rated)(2021-05-17 15:00:04)

Global Rank:   23658

Cheated in:   

Ratings System Update

(2021-05-17 15:00:04)

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?

1210 (-115)RatingProvisional
Rating i Provisional Rating, click to know more

May Challenge 2021 Division 3 (Rated)(2022-12-20 00:00:00)

Global Rank:   23658

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)

None

Practice Paths (0)

None

Contests (36)

April Challenge 2016

Chef And Magical Path, Chef and Ballons, Chef And Coloring

May Challenge 2016

Laddu

June Challenge 2016

Chef And The Hiring Event, Chef And Binary Operation, Chef and Coins Game, Devu and an Array

July Challenge 2016

Andrash and Stipendium

August Challenge 2016

Fighting Ebola, Chef and Chocolate, Chef and Round Run

October Challenge 2016

Chef and Three Dogs

November Challenge 2016

Task for Alexey

December Challenge 2016

Train Partner, Our Base is Under Attack

November Cook-Off 2016

Sebi and the highway

July Lunchtime 2016

Drumpf for President!

October Lunchtime 2016

The Largest Bouquet

January Challenge 2017

Capital Movement, Cats and Dogs

March Challenge 2017

Xenny and Alternating Tasks, Bear and Extra Number, (CH) Bear and Sorted Rows, Bandwidth of a matrix

January Cook-Off 2017

Digit Longest Increasing Subsequences 2

April Challenge 2017

Dish Of Life, Similar Dishes

June Challenge 2017

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

July Challenge 2017

Chef and Sign Sequences, Tree Expectancy, Whats in the Name, Calculator , IPC Trainers

September Challenge 2017

Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums

October Challenge 2017

Max Mex, Counter Test For CHEFSUM, A Balanced Contest

June Cook-Off 2017

Ada and crayons, SnackUp

August Cook-Off 2017

Real obtuse, From heaven to earth

September Cook-Off 2017

Subsequence Equality

June Lunchtime 2017

Maximum Unique Segment, Two Numbers

August Lunchtime 2017

Mathison and pangrams

IOPC 2017 (Rated)

The Birthday Tears, Max Out

June Challenge 2018 Division 2

Vision, Binary Shuffle

July Challenge 2018 Division 2

No Minimum No Maximum, Gears

May Challenge 2021 Division 3 (Rated)

Modular Equation

Total Problems Solved: 113