Sourya Roy

• Username: 5★sourya_10
• Country:  India
• Student/Professional:Student
• Institution:Indian Institute of Technology Kharagpur West Bengal, 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: 30

Current Ratings Graph Old Ratings Graph

2009 (+35)RatingProvisional
Rating i Provisional Rating, click to know more

July Cook-Off 2022 Division 1 (Rated)(2022-07-03 22:30:00)

Global Rank:   108

Cheated in:   

Ratings System Update

(2022-07-03 22:30:00)

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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2009 (-219)RatingProvisional
Rating i Provisional Rating, click to know more

July Cook-Off 2022 Division 1 (Rated)(2022-12-20 00:00:00)

Global Rank:   108

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 (30)

March Challenge 2020 Division 2

Ada Bishop 2

April Challenge 2020 Division 2

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

May Challenge 2020 Division 2

Isolation Centers, Coronavirus Spread

April Cook-Off 2020 Division 2

Matrix Decomposition, Lift Requests

April Lunchtime 2020 Division 2

Chef in Fantasy League

May Lunchtime 2020 Division 2

Weird Walk, Lost Weekends

June Challenge 2020 Division 2

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

July Challenge 2020 Division 2

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

July Cook-Off 2020 Division 2

OR-thodox Distinction, Even-tual Reduction

August Cook-Off 2020 Division 2

Chef and Work, K-Foldable String

August Lunchtime 2020 Division 2

Mode of Frequencies

June Cook-Off 2020 Division 2

Cache Hits, Max Mex

June Lunchtime 2020 Division 2

Maximum AND, Chef and Demonetisation, Increasing Decreasing

RECode 12.0 (Rated for all)

Chef and Walk, Chef and Numbers, Chef and String

November Lunchtime 2020 Division 2

Gasoline Introduction

September Cook-Off 2020 Division 2

Bowling Strategy

September Lunchtime 2020 Division 2

GCD operations, Root the Tree, Watermelon

CodeChef Starters 27 Division 3 (Rated)

The product mystery, Blackjack, Too many items, String Reverse, Distinct Binary Strings

CodeChef Starters 29 Division 2 (Rated)

Plusle and Minun on Array, Increase 2 consecutive characters, Decomposition Reaction, String protocol

March Cook-Off 2022 Division 2

Fixed Weight, Janmansh at Fruit Market, Equal Mex Splitting, Alternating Divisibility

CodeChef Starters 31 Division 2 (Rated)

Sign Moves, The Unchanging OR, Mexy Array, Alternating String, XOR and AND

CodeChef Starters 34 Division 2 (Rated)

Average Array

Starters 35 Division 2 (Rated)

Dark Light, Chef Find XOR Beautiful, Admins and Shopping

Starters 36 Division 2 (Rated)

Buying Sweets, Presents for Cheffina

May Cook-Off 2022 Division 2 (Rated)

Different Subarrays Rearrange, Doubled Distances

Starters 37 Division 2 (Rated)

Remove Balance, Dazzling Even-Odd Challenge, Beat the Average, Infernos, Maximum OR Minimum, Too Mean

Starters 38 Division 2 (Rated)

Good Pairs, Average Gift, Circular Track

Starters 39 Division 2 (Rated)

Compress the Video, Even Subarray XOR, Closest Vowels, Yet Another Palindromic Problem, Minimize Blocked Roads, Crazy Substrings

July Cook-Off 2022 Division 1 (Rated)

Segmentation Fault, Subsequence LCM

June Cook-Off 2022 Division 1 (Rated)

Throw and Take, Simple XOR, Split AND Sum

Total Problems Solved: 103