Prakhar

• Username: 1★luciferstern
• 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)

Rating Graph

No. of Contests Participated: 22

Current Ratings Graph Old Ratings Graph

1329 (-64)RatingProvisional
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Starters 205 (Rated)(2025-09-24 22:00:06)

Global Rank:   21834

Cheated in:   

Ratings System Update

(2025-09-24 22:00:06)

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1817 (-183)RatingProvisional
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September Cook-Off 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 (22)

June Challenge 2020 Division 2

Chef and Icecream

July Challenge 2020 Division 2

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

August Challenge 2020 Division 2

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

September Challenge 2020 Division 2

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

July Cook-Off 2020 Division 2

Even-tual Reduction, OR-thodox Distinction

July Lunchtime 2020 Division 2

Chef and Steps

August Cook-Off 2020 Division 2

Polygon Relationship, Chef and Work, K-Foldable String

August Lunchtime 2020 Division 2

Game on a Strip, Mode of Frequencies, Ratings and Rankings

June Lunchtime 2020 Division 2

Chef and Demonetisation, Increasing Decreasing

November Challenge 2020 Division 2

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

September Lunchtime 2020 Division 2

GCD operations, Watermelon

May Cook-Off 2021 Division 2

The Last Problem

June Cook-Off 2021 Division 2

The Wave

June Lunchtime 2021 Division 2

From Rational to Binary, Unpleasant Ones, False Number

CodeChef Starters 6 Division 2 (Unrated)

Joker and Batman, Chefs Homework Dilemma, Even tuples, Three Dices, Cricket Ranking

CodeChef Starters 7 Division 2 (Unrated)

Chess Format, Ceiling Sum, Maximum Possible Sweetness

August Cook-Off 2021 Division 2

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

AlgoManiac - Code For Future Division 2 (Unrated)

Meet In The Median, The Old Saint And Three Questions, The Rumbling, Say No To Drugs, Planetary Path

September Cook-Off 2021 Division 2

Chef and Pairwise Distances, Zebra Crossing, Fake Swaps, Adjacency Hatred

CodeChef Starters 13 Division 1 (Unrated)

Add and Divide

November Challenge 2021 Division 1 (Unrated)

Wildcard Replacement, Hill Sequence

Starters 193 (Rated)

Count Odd Even Divisors, Check Odd Even Divisors, Mex Tree (Min), Add Permutation

Starters 195 (Rated)

String Deletions, Game (Easy), Game (Hard), Marble Collector

Starters 197 (Rated)

Split, Bowling Balls, All Odd Prefix Sums, Good Ranking (Pair), Good Ranking (Triplet), Expected Cost

Starters 198 (Rated)

Currency Exchange, Restricted Removals, Minimize Maximum Mex

Starters 200 (Rated)

Permutation Counting (Easy), Minimum Set, Random NIM, Restrict Palindromes, Chef Bakes Cake, Good Subsequence

Starters 205 (Rated)

Unreachable, Prefix-Suffix Reconstruction

Total Problems Solved: 108