Raihan Sikdar

• Username: 1★raihan_sikdar
• Country:  Bangladesh
• Student/Professional:Student
• Institution:Bangladesh University of Business and Technology Dhaka, Bangladesh
• 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: 20

Current Ratings Graph Old Ratings Graph

1290 (-48)RatingProvisional
Rating i Provisional Rating, click to know more

Starters 84 Division 4 (Rated)(2023-04-05 22:00:06)

Global Rank:   14415

Cheated in:   

Ratings System Update

(2023-04-05 22:00:06)

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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1296 (+0)RatingProvisional
Rating i Provisional Rating, click to know more

Starters 68 Division 4 (Rated)(2022-12-20 00:00:00)

Global Rank:   7344

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 (1)

Learn C++

12%

Practice Paths (1)

Level up from 1* to 2*

23%

Contests (20)

Starters 55 Division 4 (Rated)

Broken Phone, Fever

September Long 2022 Division 4 (Rated)

Bob at the Bank, Chef and Wire Frames, Interesting Subarray, Speed Limit Test

Starters 56 Division 4 (Rated)

Nearest Exit, Chefland Games

September Lunchtime 2022 Division 4 (Rated) (Based on EJOI)

Sleep deprivation

Starters 57 Division 4 (Rated)

Alice and Marks

Starters 58 Division 4 (Rated)

Ranklist Pages, Reach the Target

Starters 59 Division 4 (Rated)

Audible Range, Speciality

October Long 2022 Division 4 (Rated)

Minimum Pizzas, Single Operation Part 2, Single Operation Part 1, Building Race, Podium Finish

Starters 60 Division 4 (Rated)

Expert Setter, Tax in Chefland, Paper Cutting, Card Removal

Starters 61 Division 4 (Rated)

Minimise LCS, Different Consecutive Characters , Reach on Time, Odd Sum Pair

Starters 62 Division 4 (Rated)

Test Score, Max minus Min, Final Sum, X Jumps

Starters 63 Division 4 (Rated)

Packing Books, Tasty Decisions, Avoid Squares Please

Starters 64 Division 4 (Rated)

Mario and the Broken String, Distinct Colors, Water Consumption

Starters 65 Division 4 (Rated)

Parity, Candies, Hackerman

November Long 2022 Division 4 (Rated)

Time Complexity, Water Mixing, String Game

Starters 66 Division 4 (Rated)

Binary Battles, Monopoly in Chefland, Squats

Starters 67 Division 4 (Rated)

Minimum Number of Ones, Counting Problem, Tour of King

Starters 68 Division 4 (Rated)

Expense List, Bull or Bear, Make AP

Starters 76 Division 4 (Rated)

Redistributing Chocolates, Read Pages, Make Array Odd, Zero String, 400M Race, Not Divisible

Total Problems Solved: 156