Pranab Singh

• Username: 5★lost_boy2001
• Country:  India
• Student/Professional:Student
• Institution:Indian Institute of Information Technology Design and Manufacturing, Kurnool Andhra Pradesh, 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: 27

Current Ratings Graph Old Ratings Graph

2156 (+6)RatingProvisional
Rating i Provisional Rating, click to know more

Starters 100 Division 1 (Rated)(2023-09-13 22:00:00)

Global Rank:   92

Cheated in:   

Ratings System Update

(2023-09-13 22:00:00)

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?

1903 (-346)RatingProvisional
Rating i Provisional Rating, click to know more

February Challenge 2021 Division 1(2022-12-20 00:00:00)

Global Rank:   47

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)

None

Practice Paths (0)

None

Contests (27)

December Cook-Off 2019 Division 2

Change It

December Lunchtime 2019 Division 2

Stupid Machine, Check Algorithm

January Cook-Off 2020 Division 2

Chef Chick

March Cook-Off 2020 Division 2

Find Your Gift

April Cook-Off 2020 Division 2

Matrix Decomposition, Lift Requests

May Cook-Off 2020 Division 2

Chef and Recipe

April Lunchtime 2020 Division 2

Another Birthday Present!, Chef in Fantasy League

May Lunchtime 2020 Division 2

Weird Walk, Lost Weekends

UWCOI 2020 (Rated for all)

Button Pairs, Find maximum in an Array

September Challenge 2020 Division 1

Chefina and Swap, Ada Matrix, Divide Candies, Find XOR, Chef and Trump Cards

July Cook-Off 2020 Division 2

Even-tual Reduction, OR-thodox Distinction

July Lunchtime 2020 Division 2

Chef and Steps, Maximum Candies

RECode 12.0 (Rated for all)

Chef and String, Chef and Numbers

October Challenge 2020 Division 1

Positive AND, Adding Squares, Compress all Subsegments, Replace for X, D-Dimensional MST

December Challenge 2020 Division 1

Hail XOR, Square Root of LCA Convolution, Calculus, String Operations, Positive Prefixes, Even Pair Sum

Coders' Legacy (Rated for all)

Chef vs Doof, Doof on Cartesian

February Challenge 2021 Division 1

Another Tree with Number Theory, Cell Shell, XOR Sums, Multiple Games, Prime Game, Team Name

June Challenge 2021 Division 1 (Unrated)

Bitwise Tuples, Bella ciao, Summer Heat

August Challenge 2021 Division 1 (Unrated)

Olympics Ranking, Array Filling, Problem Difficulties, Special Triplets, Chef and Bulb Invention

SnackDown 2021 - Online Qualifiers

Lucky Number

SnackDown 2021 - Online Round 1A

Yet Another Flipping Problem, Round Robin Ranks , Dance Moves, Equal Beauty, Min Max LCM

Starters 61 Division 1 (Unrated)

Weird Subarrays, Red Blue Flowers, Subarray Removal

Starters 73 Division 2 (Rated)

Consecutive Xor, Append for OR, First To Last, Find an integer, Minimum OR Path

Starters 74 Division 2 (Rated)

Candies, Maximum Xor Sum, Distinct Values, Lcm hates Gcd, Minimal Inversions, Odd Even Binary String

Starters 79 Division 1 (Rated till 5 Stars)

One Stone or Two Stones, Mountain, Love Squares Hate Cubes

Starters 85 Division 1 (Rated till 6 stars)

Crazy Bishops on Chessboard, Efficient PAN Linking, GCD Queries, TripTastic

Starters 90 Division 1 (Rated till 6 Stars)

Crushed Apples and a Balance Scale, Sum of Goodness, Printing Binary Array, Anti Palindrome

Starters 92 Division 1 (Rated till 6 Stars)

A Peculiar Arrangement, Distance Coloring, Beautification of array, Dividing into Groups, Rectangular Tiling

Starters 95 Division 1 (Rated till 6 Stars)

Boxes, Transfusion Chain

Starters 96 Division 1 (Rated till 5 Stars)

Swap the numbers, Zero Array, Mex Array

Starters 100 Division 1 (Rated)

Prime Permutation, Stamps 100, Concussive Sequence, Ant

Total Problems Solved: 247