prerna

• Username: 3★prerna2308
• Country:  India
• Student/Professional:Student
• Institution:Motilal Nehru National Institute of Technology Allahabad 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: 25

Current Ratings Graph Old Ratings Graph

1713 (+48)RatingProvisional
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July Cook-Off 2021 Division 2(2021-07-28 22:45:02)

Global Rank:   265

Cheated in:   

Ratings System Update

(2021-07-28 22:45:02)

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?

1713 (-149)RatingProvisional
Rating i Provisional Rating, click to know more

July Cook-Off 2021 Division 2(2022-12-20 00:00:00)

Global Rank:   265

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 (25)

April Challenge 2020 Division 2

COVID Pandemic and Long Queue

May Cook-Off 2020 Division 2

Chef and Recipe

April Lunchtime 2020 Division 2

Chef in Fantasy League, Another Birthday Present!

May Lunchtime 2020 Division 2

Weird Walk, Lost Weekends

June Challenge 2020 Division 2

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

July Challenge 2020 Division 2

Ada King, Missing a Point, Chef and Card Game, Chef and Strings

August Challenge 2020 Division 2

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

September Challenge 2020 Division 2

A Problem on Sticks, Ada Matrix

July Cook-Off 2020 Division 2

Even-tual Reduction

July Lunchtime 2020 Division 2

Chef and Steps, Maximum Candies

June Cook-Off 2020 Division 2

Cache Hits, Max Mex

October Challenge 2020 Division 2

Positive AND, Covid Run, Chef and Easy Queries

November Challenge 2020 Division 2

Restore Sequence, Ada and Dishes, Iron, Magnet and Wall

January Challenge 2021 Division 2

Fair Elections

December Challenge 2020 Division 2

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

December Cook-Off 2020 Division 2

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

December Lunchtime 2020 Division 2 (Unrated)

Sed Sequences, One Zero Swaps

October Cook-Off 2020 Division 2

Split the Str Ing, Decreasing Srrnmieeda

October Lunchtime 2020 Division 2

AND Plus OR, Chef Likes Good Sequences

September Lunchtime 2020 Division 2

GCD operations, Watermelon

January Lunchtime 2021 Division 3 (Unrated)

Even Sum, Even Differences, Binary Subsequence, Pair Me, Ashishgup and Interviews, Dreams of Divisibility

February Challenge 2021 Division 3

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

April Cook-Off 2021 Division 3

Chocolate Monger, OR of ANDs, Passing Marks, Bodybuilder

April Lunchtime 2021 Division 2

Chef in Heaven , Bench Press, Array Rotation

July Cook-Off 2021 Division 2

XOR-ORED, Mod Equality

August Challenge 2021 Division 2 (Unrated)

Chef and Bulb Invention, Problem Difficulties, Olympics Ranking

January Long 2022 - I, Division 2 (Unrated)

Prime in a binary string

Total Problems Solved: 107