hridoy roy

• Username: 3★hridoy3289
• Country:  Bangladesh
• Student/Professional:Student
• Institution:University of Rajshahi Bangladesh
• 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: 15

Current Ratings Graph Old Ratings Graph

1778 (-19)RatingProvisional
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Starters 168 (Rated)(2025-01-08 22:30:02)

Global Rank:   1233

Cheated in:   

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(2025-01-08 22:30:02)

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1707 (-48)RatingProvisional
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Starters 55 Division 2 (Rated)(2022-12-20 00:00:00)

Global Rank:   102

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 (15)

July Challenge 2020 Division 2

Chef and Strings

October Challenge 2020 Division 2

Covid Run

May Lunchtime 2022 Division 3 (Rated)

Problems in your to-do list, Bucket and Water Flow

May Long Two 2022 Division 3 (Rated)

Xor Palindrome, Subarrays with length, Score High, Make them Zero, Degree of Polynomial

Starters 42 Division 3 (Rated)

How Many Maximums, Minimum number of Flips, Divisible by 3, Minimum or Maximum, Maximise Set Bits

June Long One 2022 Division 2 (Unrated)

Alternate Additions

June Lunchtime 2022 Division 2 (Rated)

Zero Ones Equal One Zeros, Equal by XORing

Starters 50 Division 2 (Rated)

Air Blimp, Permutation GCD, Sum Product Segments, Average Permutation

Starters 51 Division 2 (Rated)

Different Medians, Split N, Copy and Paste

Starters 53 Division 2 (Rated)

Black&White Ring Game, Make A and B equal, Queen Blocks

Starters 55 Division 2 (Rated)

Non Zero Xor, Ball Sequence, Balls and Boxes, Mean and Median, OR Tuples

Starters 70 Division 2 (Rated)

Frequency Array Retrieval, Prime Reversal, Minimum distance between 1s

Starters 73 Division 2 (Rated)

Consecutive Xor, Append for OR

Starters 90 Division 2 (Rated)

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

Starters 164 (Rated)

Halloween Array, Construct Permutation, Swap and Flip

Starters 168 (Rated)

No Two Alike, Equate XOR, Make Odd

Total Problems Solved: 77