Ubaid Ahmad

• Username: 1★ubaida985
• Country:  India
• Student/Professional:Student
• Institution:Acharya Institute of Technology Bangalore, Karnataka, 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: 22

Current Ratings Graph Old Ratings Graph

1255 (-272)RatingProvisional
Rating i Provisional Rating, click to know more

Starters 61 Division 3 (Rated)(2022-10-19 23:00:04)

Global Rank:   3767

Cheated in:   Plagiarised in START61C

Ratings System Update

(2022-10-19 23:00:04)

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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1255 (-24)RatingProvisional
Rating i Provisional Rating, click to know more

Starters 61 Division 3 (Rated)(2022-12-20 00:00:00)

Global Rank:   3767

Cheated in:   Plagiarised in START61C

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 String, The Tom and Jerry Game!, Chef and Price Control

September Challenge 2020 Division 2

A Problem on Sticks

October Challenge 2020 Division 2

Positive AND, Replace for X, Covid Run, Chef and Easy Queries

November Challenge 2020 Division 2

Restore Sequence, Ada and Dishes

January Challenge 2021 Division 2

Fair Elections

December Challenge 2020 Division 2

Hail XOR, Positive Prefixes, Even Pair Sum, Vaccine Production, Vaccine Distribution

December Cook-Off 2020 Division 2

Minimum Attendance Requirement

November Lunchtime 2020 Division 2

Gasoline Introduction, Gasoline

September Lunchtime 2020 Division 2

GCD operations, Watermelon

February Challenge 2021 Division 3

Highest Divisor

March Cook-Off 2021 Division 3

Weight Balance

March Challenge 2021 Division 3

Chef and Groups, No Time to Wait

May Cook-Off 2021 Division 3

Vaccine Drive, Marathon

May Lunchtime 2021 Division 3

Birthday Gifts, Charges, Hoop Jump, Tom And Jerry 1

May Challenge 2021 Division 3 (Rated)

Solubility, Tree House, Golf, Modular Equation, Xor Equality, An Interesting Sequence, Valid Paths, Tic Tac Toe

June Challenge 2021 Division 2 (Unrated)

Bella ciao, Summer Heat

June Cook-Off 2021 Division 2

Binary String on Steroids, The Wave

June Lunchtime 2021 Division 2

False Number, Unpleasant Ones

July Lunchtime 2021 Division 2

Beautiful Pairs

CodeChef Starters 7 Division 2 (Unrated)

Chess Format, Food Chain

August Challenge 2021 Division 3 (Rated)

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

February Lunchtime 2022 Division 3

Four Equidistant Points on a Grid, Good Program, Parallel Processing, Watching Movies at 2x

Starters 36 Division 2 (Rated)

Presents for Cheffina

Starters 61 Division 3 (Rated)

Palindrome Partition, Minimise LCS, Different Consecutive Characters , Weird Subarrays, Red Blue Flowers, Row Bombing, Subarray Removal, Odd Sum Pair

Total Problems Solved: 121