Roshan Kumar

• Username: 4★roshan_mehta
• Country:  India
• Student/Professional:Student
• Institution:Indian Institute of Technology Guwahati Assam
• 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: 29

Current Ratings Graph Old Ratings Graph

1877 (+60)RatingProvisional
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June Lunchtime 2021 Division 2(2021-06-26 22:45:02)

Global Rank:   172

Cheated in:   

Ratings System Update

(2021-06-26 22:45:02)

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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1877 (-69)RatingProvisional
Rating i Provisional Rating, click to know more

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

Global Rank:   172

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 (29)

April Challenge 2020 Division 2

Squared Subsequences, Strange Number, COVID Pandemic and Long Queue, Unit GCD, Sell All the Cars

May Challenge 2020 Division 2

Triple Sort, Coronavirus Spread, Isolation Centers

April Cook-Off 2020 Division 2

Lift Requests

May Cook-Off 2020 Division 2

Chef and Recipe, Chef, Chefina and Their Friendship

April Lunchtime 2020 Division 2

Another Birthday Present!, Chef in Fantasy League

June Challenge 2020 Division 2

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

July Challenge 2020 Division 1

Doctor Chef, Missing a Point, Chefina and Swaps, Chef and Dragon Dens

August Challenge 2020 Division 1

Smallest KMP, Chef and Wedding Arrangements

September Challenge 2020 Division 1

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

July Cook-Off 2020 Division 1

OR-thodox Distinction, Path-etic Products, Even-tual Reduction

July Lunchtime 2020 Division 1

Binary Concatenation

August Cook-Off 2020 Division 1

Polygon Relationship

August Lunchtime 2020 Division 1

Game on a Strip, Alien Invasion

June Cook-Off 2020 Division 2

Cache Hits, Per Capita Income, Max Mex

June Lunchtime 2020 Division 1

Gold Mining, Maximum AND

RECode 12.0 (Rated for all)

Chef and String, Chef and Numbers

October Challenge 2020 Division 1

Positive AND, Replace for X

November Challenge 2020 Division 1

Restore Sequence

January Challenge 2021 Division 2

Fair Elections

December Cook-Off 2020 Division 2

Self-Destructing Strings, Catch the Thief, Circle of Chaos, Minimum Attendance Requirement

January Cook-Off 2021 Division 2

Mex Subsequence, Maximise Islands, Prime Tuples

December Lunchtime 2020 Division 1 (Unrated)

Three Letters, One Zero Swaps

January Lunchtime 2021 Division 2 (Unrated)

Even Sum, Even Differences, Binary Subsequence, Dreams of Divisibility, Ashishgup and Interviews, Shifting Spoons, Good Grid, Pair Me

October Cook-Off 2020 Division 2

Split the Str Ing, Decreasing Srrnmieeda, Path-etic Sums

October Lunchtime 2020 Division 1

Chef Likes Good Sequences, Chef Is Just Throwing Random Words, Cute Chef Gift

Coders' Legacy (Rated for all)

Chef vs Doof, Doof fires Brackets, Doof on Cartesian

September Cook-Off 2020 Division 1

Maximise Subsequence Value

February Challenge 2021 Division 2

Frog Sort, Maximise Function

June Lunchtime 2021 Division 2

From Rational to Binary, False Number, Unpleasant Ones, Tic Tac Toe

Total Problems Solved: 160