Rajat Biswas

• Username: 4★rajat4064
• Country:  India
• Student/Professional:Other
• 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: 14

Current Ratings Graph Old Ratings Graph

1847 (-8)RatingProvisional
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September Challenge 2020 Division 1(2020-09-14 15:00:00)

Global Rank:   523

Cheated in:   

Ratings System Update

(2020-09-14 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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1847 (-29)RatingProvisional
Rating i Provisional Rating, click to know more

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

Global Rank:   523

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 (14)

June Challenge 2017

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

July Challenge 2017

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

August Long Challenge 2017

Chef and Rainbow Array, Palindromic Game

September Challenge 2017

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

August Cook-Off 2017

Real obtuse, From heaven to earth

August Lunchtime 2017

Mathison and the Dynamo shuffle, Mathison and pangrams

February Challenge 2018

Chef And His Characters, Chef And The Patents, Car-pal Tunnel, Permutation and Palindrome

September Mega Cook-Off 2018 Division 1

OneTwo, Make a Permutation

September Challenge 2018 Division 2

Magician versus Chef, War of XORs, Chef and Adventures, Table Game, Bad Shuffle

December Challenge 2018 Division 2

Max and Electrical Panel, Chef and Interactive XOR, Chef and Meatballs, Chef and Interactive Contests, Chef and An Ideal Problem

January Challenge 2019 Division 1

Different Neighbours, Distinct Pairs

August Challenge 2020 Division 2

Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess, Smallest KMP, Chef and Wedding Arrangements

September Challenge 2020 Division 1

Chefina and Swap, Chef and Trump Cards, Find XOR, Ada Matrix

Total Problems Solved: 48