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Programming and DSA

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Practice Compete Compiler

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Programming and DSA

Learn to think like a programmer. Develop your problem-solving skills with essential data structures and algorithms.

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Programming and DSA

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Catalogue

Programming and DSA

Learn to think like a programmer. Develop your problem-solving skills with essential data structures and algorithms.

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Practice Compete Compiler
Home » Raihan Arefin
user profile

Raihan Arefin

Bronze League Bronze League
  • 3★mr_no0b
  •   Bangladesh
  • Student
  • Khulna University of Engineering & Technology Khulna, Bangladesh
  • No Active Plan. View Details

Submissions Heat Map

Rating Graph

No. of Contests Participated: 33
1751 (-18)RatingProvisional
Rating i Provisional Rating, click to know more
Starters 219 (Rated)(2025-12-31 22:00:02)
Global Rank:   669
Cheated in:   

Ratings System Update

(2025-12-31 22:00:02)
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?
1384? (+0)RatingProvisional
Rating i Provisional Rating, click to know more
December Long 2022 Division 4 (Rated)(2022-12-20 00:00:00)
Global Rank:   883
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 (33)

Starters 68 Division 4 (Rated)

Expense List, Bull or Bear, Make AP, Make Money

Starters 70 Division 4 (Rated)

Kitchen Timings, Spice Level, Cost of Groceries, Minimum distance between 1s, Prime Reversal, Frequency Array Retrieval

December Long 2022 Division 4 (Rated)

Gcd of Subarrays, Good Investment or Not, Divisible by K, Reach fast, Maximise XOR

Starters 78 Division 3 (Rated)

Valid Expression, Passing Marks

Starters 80 Division 3 (Rated)

Prefix Permutation, Single-use Attack, Running Comparison, Equal Elements

Starters 84 Division 3 (Rated)

Max count of 1, Elections in Chefland, Max Binary, Chef And Adjacent Sums, Melt Gold

Starters 85 Division 3 (Rated)

Crazy Bishops on Chessboard, Efficient PAN Linking, Inside The Stadium, Can Chef

Starters 86 Division 3 (Rated)

String Game , Cricket Match, Chef and Battery , Maximise Score

Starters 97 Division 2 (Rated)

Schrodinger Smiley, Triplets Min

Starters 121 Division 2 (Rated)

Frequal, Split And Maximize, Caesar Cipher Lite, Anti Adjacent Swaps

Starters 123 Division 2 (Rated)

Maximise Adjacent Sum, Check Adjacent Sum, Minimum And Maximum I, Yet Another Alice Bob Game, Minimum And Maximum II

Starters 124 Division 2 (Rated)

Binary Parity, Table Strength, Swap and Unite

Starters 127 Division 2

ABC Conjecture, Superincreasing, Anti-Triangle

Starters 128 Division 2 (Rated)

Binary Substring, XOR And Multiply, MEXimize the Array

Starters 131 Division 2 (Rated)

K-Closeness, Dice Deception, Encrypt Value

Starters 133 Division 2 (Rated)

Powered Parameters, Maximum Alternating Sum

Starters 137 Division 2 (Rated)

Double Trouble, Large Differences

Starters 166 (Rated)

Distinct Power, Chefland Library

Starters 171 (Rated)

Swish Game, White Wall

Starters 172 (Rated)

Transform String, AndOr, Streak Star

Starters 175 (Rated)

Alternate It!, Make same

Starters 177 (Rated)

Flip or Reverse, Counting 01 and 10, Ordered Distances, 2 Boxes

Starters 178 (Rated)

Big Difference, Placing 01 And 10

Starters 179 (Rated)

Lost in the Fest!!, Station Allocation, Unlock The Safe, Can you reach

Starters 182 (Rated)

Bar Queue, Beautiful Garden, Palindromic Score

Starters 188 (Rated)

Swaps in a String, K Boxes, Yet Another Monsters Problem, Subset Sum 3

Starters 190 (Rated)

Subsequence Sort, Light All, Parry It! (Easy)

Starters 191 (Rated)

Grid Path (Easy), Add to get GCD, Permuted Greater than 2

Starters 192 (Rated)

Security Lines, No 3 Please!

Starters 194 (Rated)

Mark All, Munchys Modulo, Chef Bakes Cake 3

Starters 215 (Rated)

Product Sum Arrays (Easy), Differing Values, Special Missions

Starters 216 (Rated)

LIS and LDS, XOR Equal Subtract, Best Seats

Starters 219 (Rated)

New Operation, 3 Paths , Ones and Zeroes II, Ones and Zeroes I

ICPC Amritapuri 2025 - Onsite Round Replay

B - Fair Removals, J - Varied Subsequences, F - Red Green Game

Total Problems Solved: 118

1751
(Div 2)
★★★
CodeChef Rating (Highest Rating 1857)
  • 6827 Global Rank
  • 216 Country Rank

Badges

Contest Contender - Silver Badge

Contest Contender - Silver Badge

Received for participating in 25 Contests

Problem Solver - Bronze Badge

Problem Solver - Bronze Badge

Received for solving 50 Problems

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