Sira Songpolrojjanakul

• Username: 3★mystery_boy
• Country:  Thailand
• Student/Professional:Student
• Institution:Suankularb Wittayalai School Bangkok, Thailand
• CodeChef Pro Plan: No Active Plan. View Details

Activity Heat Map

Last 6 Months 2025 (Jan-Jun)2024 (Jul-Dec)2024 (Jan-Jun)

Rating Graph

No. of Contests Participated: 10

Current Ratings Graph Old Ratings Graph

1717 (+55)RatingProvisional
Rating i Provisional Rating, click to know more

April Cook-Off 2016(2016-04-18 00:00:00)

Global Rank:   237

Cheated in:   

Ratings System Update

(2016-04-18 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?

1717 (-32)RatingProvisional
Rating i Provisional Rating, click to know more

April Cook-Off 2016(2022-12-20 00:00:00)

Global Rank:   237

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)

Practice Paths (1)

Practice for ZCO and INOI

1%

Contests (10)

June Long Contest 2011

Chef Teams, Maximal Score Path

December Challenge 2014

Alok-nath and His Sanskars, XOR with Subset, Chef and Apple Trees

January Challenge 2015

Queries on the String, Chef and A Large Permutation, Chef and Stones, Sereja and Votes, One Dimensional Kingdoms, Gcd Queries

February Challenge 2015

Chef and Chain, Chef and Equality, Let us play with rank list, Chef and Strange Formula

March Challenge 2015

Chef and Notebooks

May Challenge 2015

Chef and Prime Divisors, Set Difference , Chef and new recipe

June Challenge 2015

Chef and Memory Limit

April Cook-Off 2016

Movie Weekend, Odd Divisors

Total Problems Solved: 294