SHUBHAM KUMAR

• Username: 4★hacker_sk
• Country:  India
• Student/Professional:Other
• 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: 20

Current Ratings Graph Old Ratings Graph

1943 (+40)RatingProvisional
Rating i Provisional Rating, click to know more

April Challenge 2020 Division 1(2020-04-13 17:30:00)

Global Rank:   198

Cheated in:   

Ratings System Update

(2020-04-13 17:30:00)

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?

1943 (-85)RatingProvisional
Rating i Provisional Rating, click to know more

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

Global Rank:   198

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 (20)

September Challenge 2016

Dividing Machine, Chef and Friends, Chef and calculation, Chef and digits of a number, Faded Palindromes

October Challenge 2016

Chef and Keyboard, Fenwick Iterations, Chef and Three Dogs

November Challenge 2016

Count Permutations, Chef and squares, Task for Alexey

August Lunchtime 2016

Studying Alphabet

January Challenge 2017

Capital Movement, Reservior, Cats and Dogs

February Challenge 2017

Eugene and big number, Chef and Triangles, Chef and his Best Friend, Chef and His Apartment Dues, Gerrymander

March Challenge 2017

Bandwidth of a matrix, Bear and Extra Number, Xenny and Alternating Tasks

April Challenge 2017

Stable market, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes, Chef and Divisor Tree

May Challenge 2017

Courses in an university, Chef and Subsequences, Median of adjacent maximum numbers, Blocked websites, Chef and his daily routine, Gotham PD, Long Sandwich , Chef and Sub Array

June Challenge 2017

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

September Challenge 2017

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

October Challenge 2017

Chef and Cycled Cycles, Max Mex, A Balanced Contest, Chef and Magic Arrays

March Cook-Off 2017

Safe Robot

June Cook-Off 2017

Ada and crayons, SnackUp

August Cook-Off 2017

From heaven to earth, Real obtuse

May Lunchtime 2017

Prefix Inversions

June Lunchtime 2017

Maximum Unique Segment, Two Numbers

February Challenge 2018

Broken Clock, Chef And His Characters, Chef And The Patents, Permutation and Palindrome

March Challenge 2018 DIV 1

Minions and Voting, Chef and Easy Problem, Mix the Colors

March Lunchtime 2018 Division 2 (Unrated)

Partitions, Chef and Friends, Three Integers, Magic Elements

April Challenge 2018 Division 2

Average of Pairs, Workers, Count Good Prefixes, Highway Crossing, Weight of Numbers, Cutting Plants, Chef and Array (Challenge)

Dementia (Rated for Division 2)

Strings, Chef and Replication

LoC April 2018 (Rated for Division 2)

Bob and Pallindromes

April Challenge 2020 Division 1

Strange Number, Squared Subsequences, Perfect Power Divisors, Ready Bitwise, Factor Tree, Leaked Answers (Challenge)

Total Problems Solved: 117