Rishi Tiwari

• Username: 4★rishi517
• Country:  India
• Student/Professional:Student
• Institution:National Institute of Technology Patna Bihar, India
• 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: 21

Current Ratings Graph Old Ratings Graph

1976 (+46)RatingProvisional
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CodeChef Starters 17 Division 2 (Rated)(2021-11-17 23:00:02)

Global Rank:   32

Cheated in:   

Ratings System Update

(2021-11-17 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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1976 (-107)RatingProvisional
Rating i Provisional Rating, click to know more

CodeChef Starters 17 Division 2 (Rated)(2022-12-20 00:00:00)

Global Rank:   32

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 (21)

May Challenge 2020 Division 2

Isolation Centers, Coronavirus Spread

April Lunchtime 2020 Division 2

Chef in Fantasy League

June Challenge 2020 Division 2

Even Matrix, Chef and Price Control, Chef and String, Chef and Icecream, The Tom and Jerry Game!

September Challenge 2020 Division 2

Chefina and Swap, A Problem on Sticks, Ada Matrix, Coronavirus Spread 2

November Challenge 2020 Division 2

Restore Sequence, Ada and Dishes, Magical Candy Store, Iron, Magnet and Wall

December Cook-Off 2020 Division 2

Self-Destructing Strings, Catch the Thief, Minimum Attendance Requirement

December Lunchtime 2020 Division 2 (Unrated)

One Zero Swaps, Sed Sequences, Three Letters

September Cook-Off 2020 Division 2

Bowling Strategy

Byterace IIT Patna Division 2 (Rated)

The Begining Era Of Cyberverse

March Lunchtime 2021 Division 3

Turn It, Dinner by Candlelight, Motivation, Make the Sum Even, Racing, Lunchtime

April Lunchtime 2021 Division 2

Chef in Heaven , Array Rotation, Bench Press

SPYBITS IIT BHU Division 2 (Rated)

B - Valentine Couples, C - Mission Gotham, D - Pilgrims Destination, A - Save Water Save Life

May Lunchtime 2021 Division 2

Total Components, Tom And Jerry 1, Charges

June Challenge 2021 Division 2 (Unrated)

Minimum Dual Area, Minimum Subtree Cover, Shortest Route

June Cook-Off 2021 Division 2

Binary String on Steroids, The Wave

June Lunchtime 2021 Division 2

From Rational to Binary, False Number, Unpleasant Ones

July Cook-Off 2021 Division 2

XOR-ORED, Mod Equality

August Challenge 2021 Division 2 (Unrated)

Array Filling

August Cook-Off 2021 Division 2

Odd Array, Different String, Chef and Closure, Equal Difference, Clear the Array

CodeChef Starters 13 Division 2 (Rated)

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

September Lunchtime 2021 Division 2

Balanced and Unique Arrays, Alice vs Bob Faceoff, Yet another SOD problem

CodeChef Starters 17 Division 2 (Rated)

New Piece, Partition It, String Game, GCD of Prefixes, Binary Inversion

CodeChef Starters 18 Division 1 (Unrated)

Palindromic Binary Numbers, Expectations on a Permutation, Compare those strings

C.O.D.E.R.S Division 1 (Unrated)

The One with All the Candy

CodeChef Starters 22 Division 1 (Unrated)

Merging Binary Strings, Equal LIS

January Long 2022 - II, Division 1 (Unrated)

Sum and OR

February Long 2022 - I, Division 1 (Unrated)

Bitwise Blend, Remove Adjacent

Total Problems Solved: 138