Prahalad Singh

• Username: 4★mambamentality
• Country:  India
• Student/Professional:Other
• CodeChef Pro Plan: No Active Plan. View Details

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Last 6 Months 2026 (Jan-Jun)2025 (Jul-Dec)2025 (Jan-Jun)

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No. of Contests Participated: 15

Current Ratings Graph Old Ratings Graph

1993 (+26)RatingProvisional
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Starters 48 Division 2 (Rated)(2022-07-20 23:00:02)

Global Rank:   189

Cheated in:   

Ratings System Update

(2022-07-20 23:00:02)

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1993 (-9)RatingProvisional
Rating i Provisional Rating, click to know more

Starters 48 Division 2 (Rated)(2022-12-20 00:00:00)

Global Rank:   189

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 (15)

CodeChef Starters 32 Division 4 (Rated)

Binary String Cost, Volume Control, Finding Shoes, Flip Sorting, Course Registration, Maximize the Minimum

April Cook-Off 2022 Division 4

Funny Hand, Email Reminders

CodeChef Starters 33 Division 4 (Rated)

Minimum Cars required, Make Them Equal, Non Adjacent Flips, Monthly Budget, The Cheaper Cab, Broken Life, Distinct Dilemma

April Long One 2022, Division 3 (Rated)

Dazzling GCD Pair, Prime Sum, Dazzling AXNODR Challenge , Ezio and Guards, Min Max Equality, The Cooler Dilemma 1, The Cooler Dilemma 2, Pairwise Xors

CodeChef Starters 34 Division 2 (Rated)

Binary Mismatch, Good Permutation, Average Array

April Lunchtime 2022 Division 2(Rated)

Buckets Full of Candies, Pair Pain, Secret Machine Mania

Starters 35 Division 2 (Rated)

Jump to Sibling, Dark Light, Admins and Shopping

Starters 36 Division 2 (Rated)

Buying Sweets, Presents for Cheffina

April Long Two 2022 Division 2 (Unrated)

Akash and Equal Mean, Pseudo Sorted Array, Geometric Mean Inequality

May Long Two 2022 Division 2 (Unrated)

Subsequence-Numbers Divisible by 7

July Cook-Off 2022 Division 2 (Rated)

Permutation And Median, Xor Permutation, Segmentation Fault

June Long One 2022 Division 2 (Unrated)

Full Path Eraser, Equal Strings, Alternate Additions, Possible GCD, Divisible by i , Chairs Requirement, Reduce to zero, Expected move, Subscriptions

Starters 44 Division 2 (Rated)

Atleast and Atmost, Triple Xor, Dense Bracket Sequence

June Lunchtime 2022 Division 2 (Rated)

Zero Ones Equal One Zeros, The Lost Array, Equal by XORing

June Long Two 2022 Division 2 (Unrated)

Count the ACs, AP Grid

Starters 46 Division 2 (Rated)

Vowel Anxiety, Array sorting, Sort the String

Starters 47 Division 2 (Rated)

Copy and Push Back, Similar Heights, End Sorted

July Lunchtime 2022 Division 2 (Rated)

Tree Retrieval, Largest Family, Maximum Median Matching, Consecutive XOR, Yet Another Palindrome Making Problem, Easy Pronunciation

Starters 48 Division 2 (Rated)

Fill The Grid, Make Palindrome 2, Positive array, Accurate XOR

July Long Two 2022 Division 1 (Unrated)

Concat Sort

Starters 49 Division 1 (Unrated)

Students-Far From Hostel, Split The String, High Frequency, Monks

Starters 55 Division 1 (Unrated)

Non Zero Xor

Starters 59 Division 1 (Unrated)

Alternative Sufferings

Starters 60 Division 1 (Unrated)

Distinct Numbers, Red Green Grids

Total Problems Solved: 101