Nirbhay Singh Prajapati

• Username: 4★prayutsu
• Country:  India
• Student/Professional:Student
• Institution:Indian Institute of Information Technology, Lucknow Uttar Pradesh, India
• 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: 33

Current Ratings Graph Old Ratings Graph

1865 (+47)RatingProvisional
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December Lunchtime 2021 Division 2(2021-12-25 23:00:02)

Global Rank:   82

Cheated in:   

Ratings System Update

(2021-12-25 23:00:02)

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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1865 (-172)RatingProvisional
Rating i Provisional Rating, click to know more

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

Global Rank:   82

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 (33)

January Challenge 2020 Division 2

Doraemon, Chef and Dynamo, Breaking Bricks

February Challenge 2020 Division 2

School of Geometry, Hard Cash

April Challenge 2020 Division 2

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

May Challenge 2020 Division 2

Coronavirus Spread, Isolation Centers

January Cook-Off 2020 Division 2

Chef Chick

August Challenge 2020 Division 2

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

September Challenge 2020 Division 2

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

October Challenge 2020 Division 2

Chef and Easy Queries, Replace for X, Positive AND, Covid Run

November Challenge 2020 Division 2

Restore Sequence, Ada and Dishes

December Challenge 2020 Division 2

Positive Prefixes, Even Pair Sum, Vaccine Production, Vaccine Distribution

October Cook-Off 2020 Division 2

Split the Str Ing, Decreasing Srrnmieeda

November Cook-Off 2020 Division 2

Flip the String, Chef and IPC Certificates

October Lunchtime 2020 Division 2

AND Plus OR, Chef Is Just Throwing Random Words

November Lunchtime 2020 Division 2

Gasoline Introduction

February Challenge 2021 Division 3

Frog Sort, Chef and Meetings, Prime Game, Maximise Function, Highest Divisor

February Lunchtime 2021 Division 2

Coprime Range, Palpal Strings

March Challenge 2021 Division 2

Interesting XOR!, Paparazzi Gennady, Space Arrays

April Lunchtime 2021 Division 2

Chef in Heaven , Bench Press

July Cook-Off 2021 Division 2

XOR-ORED, Mod Equality

CodeChef Starters 7 Division 3 (Rated)

Maximum Array Xor, Chess Format, Food Chain

August Lunchtime 2021 Division 2

Crossing Blocks, Just a Graph, K-th Maximum

SnackDown 2021 - Online Qualifiers

Lucky Number

CodeChef Starters 11 Division 2 (Rated)

Positive Spewing, The Grid Fill Problem, Obtain the Sum

CodeChef Starters 13 Division 2 (Rated)

Add and Divide, Chef in Vaccination Queue, Maximum Light Up, Magical Doors

September Lunchtime 2021 Division 2

Interesting Representation, Yet another SOD problem, Balanced and Unique Arrays

CodeChef Starters 17 Division 2 (Rated)

Binary Inversion, GCD of Prefixes, New Piece

CodeChef Starters 19 Division 2 (Rated)

P Equal To NP, Indivisible Permutation, The Alternating Sum, Distinct Elements

CodeChef Starters 20 Division 2 (Unrated)

Weird Values, Brutal-Xors, Stable Sequence, Finding Pairs

C.O.D.E.R.S Division 2 (Rated)

The One On The Last Night, The One with All the Candy

FizzBuzz Division 2 (Rated)

Magical Planks, Clean The Sequence, Substring Minimum Function, Can_Reach

December Lunchtime 2021 Division 2

Maximum Trio, Optimal Sorting, Romantic Reversals

Total Problems Solved: 232