shakti singh

• Username: 4★dd221
• Country:  India
• Student/Professional:Student
• Institution:The LNM Institute of Information Technology, Jaipur Rajasthan, 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: 24

Current Ratings Graph Old Ratings Graph

1890 (-22)RatingProvisional
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July Lunchtime 2021 Division 2(2021-07-31 21:00:02)

Global Rank:   1247

Cheated in:   

Ratings System Update

(2021-07-31 21:00:02)

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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1890 (+41)RatingProvisional
Rating i Provisional Rating, click to know more

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

Global Rank:   1247

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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Contests (24)

March Challenge 2020 Division 2

Ada Bishop 2, XOR Engine, Pintu and Fruits

April Challenge 2020 Division 2

Strange Number, COVID Pandemic and Long Queue, Leaked Answers (Challenge), Sell All the Cars, Unit GCD, Squared Subsequences

May Challenge 2020 Division 2

Coronavirus Spread, Isolation Centers

March Cook-Off 2020 Division 2

Mysterious Sequence, Find Your Gift, Box of Chocolates

April Cook-Off 2020 Division 2

Matrix Decomposition, Lift Requests, Simple Operations

June Challenge 2020 Division 2

Chef and Price Control, Chef and String, Covid Sampling (Challenge), The Tom and Jerry Game!, Even Matrix, Chef and Icecream

August Challenge 2020 Division 2

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

June Cook-Off 2020 Division 2

Cache Hits, Max Mex

June Lunchtime 2020 Division 2

Maximum AND, Increasing Decreasing, Chef and Demonetisation

October Challenge 2020 Division 2

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

November Challenge 2020 Division 2

Restore Sequence, Ada and Dishes

January Challenge 2021 Division 2

Watching CPL, Fair Elections

December Challenge 2020 Division 2

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

December Cook-Off 2020 Division 2

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

January Cook-Off 2021 Division 2

Prime Tuples, Maximise Islands

December Lunchtime 2020 Division 1 (Unrated)

Three Letters, One Zero Swaps

January Lunchtime 2021 Division 2 (Unrated)

Binary Subsequence, Even Differences, Even Sum

UWCOI 2021 (Rated for all)

Array Swaps, Hidden Numbers

April Cook-Off 2021 Division 2

Chocolate Monger, Tree Distances, OR of ANDs

April Lunchtime 2021 Division 2

Chef in Heaven , Bench Press, Array Rotation

May Cook-Off 2021 Division 2

The Last Problem, Double Burgers, Chef and Subarrays

May Lunchtime 2021 Division 2

Total Components, Tom And Jerry 1, Charges

May Challenge 2021 Division 2 (Rated)

Tree House, Xor Equality, Tic Tac Toe, Modular Equation

June Lunchtime 2021 Division 2

From Rational to Binary, False Number, Unpleasant Ones

July Lunchtime 2021 Division 2

Beautiful Pairs, Array Rotation Returns

Total Problems Solved: 91