Hasib Billah

• Username: 3★halfo
• Country:  Bangladesh
• Student/Professional:Student
• Institution:Ahsanullah University of Science and Technology Dhaka, 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: 10

Current Ratings Graph Old Ratings Graph

1664 (+18)RatingProvisional
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July Challenge 2016(2016-07-13 15:00:00)

Global Rank:   2146

Cheated in:   

Ratings System Update

(2016-07-13 15:00:00)

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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1664 (-84)RatingProvisional
Rating i Provisional Rating, click to know more

July Challenge 2016(2022-12-20 00:00:00)

Global Rank:   2146

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 (10)

January Challenge 2014

Meteor

September Cook-Off 2014, ACM-ICPC Warm up

Sherlock and the Grid, Subarray GCD, Subarray LCM

March Challenge 2014

Chef and Graph Queries, A Story with Strings, Mike and Stamps, Little Chef and Numbers, The Street , Walk, Binary Tournament, Team Split, Sereja and Sorting 2, Maximum number, GCD condition

May Challenge 2014

Chef-jumping, Stone

July Challenge 2014

Chef and Frogs, Count Substrings

October Challenge 2014

Chef and Ground, DevuLand, Dinosaurs and Laddus

February Challenge 2015

Chef and Chain, Chef and Equality

May Cook-Off 2015

Devu, his friends and birthday gifts, Devu and friendship testing, Devu and decorating birthday cake

July Challenge 2016

Chef and Segments, Chef and special numbers

Total Problems Solved: 31