Phạm Bá Thái

• Username: 6★thai9cdb
• Country:  Vietnam
• Student/Professional:Student
• Institution:Hanoi University of Science and Technology, Vietnam
• 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: 30

Current Ratings Graph Old Ratings Graph

2300 (+52)RatingProvisional
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September Challenge 2019 Division 1(2019-09-16 15:00:00)

Global Rank:   17

Cheated in:   

Ratings System Update

(2019-09-16 15:00:00)

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2300 (+73)RatingProvisional
Rating i Provisional Rating, click to know more

September Challenge 2019 Division 1(2022-12-20 00:00:00)

Global Rank:   17

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 (30)

April Challenge 2017

Chef and Digits, Bear and Random Grid, Chef and Divisor Tree, Stable market, Heavy-Light Decomposition, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes

May Challenge 2017

Chef and Sub Array , Long Sandwich , Gotham PD, Chef and his daily routine, Courses in an university, Blocked websites, Median of adjacent maximum numbers, Chef and Subsequences

June Challenge 2017

Chef and Prime Queries, A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets

July Challenge 2017

Chef and Sign Sequences, Pishty and tree, Tree Expectancy, Whats in the Name, Calculator , IPC Trainers, Two Coins

August Long Challenge 2017

Chef and Rainbow Array, Chef And Fibonacci Array, Chef and Mover, Palindromic Game, Greedy Candidates, Strings and Graphs

September Challenge 2017

Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Sum of Cubes, Weasel does Xor on Tree, Fill The Matrix, Little Chef and Sums

December Challenge 2017

Chef and Universe, Total Diamonds, Chef And his Cake, Chef And Easy Xor Queries, Penalty Shoot-out, Red and blue points

April Cook-Off 2017

Bear and Xor of Sums, Bear and Shop Trip, Bear and Candies 123, Bear and AB

June Cook-Off 2017

Ada and crayons, Knight Covering, SnackUp

July Cook-Off 2017

Chang and Bitwise OR, Chang and the Perfect Function, Chang and Perfect Quadruples

August Cook-Off 2017

Real obtuse, From heaven to earth

December Cook-Off 2017

Minimum SubArray, Beautiful Array, Football Match

May Lunchtime 2017

Prefix Inversions

June Lunchtime 2017

Maximum Unique Segment, Two Numbers

July Lunchtime 2017

Find the Maximum Value

August Lunchtime 2017

Mathison and the Dynamo shuffle, Mathison and pangrams

IOPC 2017 (Rated)

The Birthday Tears, Max Out

January Challenge 2018

A humongous Query, K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers

January Cook-Off 2018

Multiple of 3, Make array great again, Survive in ChocoLand

February Challenge 2018

Broken Clock, Lucas Theorem, Chef And Land Labeling, Chef And His Characters, Chef And The Patents, Chef and odd queries, Points Inside A Polygon, Car-pal Tunnel, (Challenge) Biased Committee, Permutation and Palindrome

March Challenge 2018 DIV 1

Pishty and Triangles, Chef and Easy Problem, Chef and Gcd Queries, Mix the Colors, Minions and Voting, Embedding a Tree (Challenge)

June Cook-Off 2018 Division 1

Masha and Minions, Good Permutations

May Lunchtime 2018 Division 2

Trace of Matrix, Count Substrings, Shifted Palindrome, Weak in the Middle, Maximum Plus

June Challenge 2018 Division 2

Two Flowers, Vision, Sheokand and String, Binary Shuffle, Naive Chef

August Challenge 2018 Division 1

Coordinate Compression , Modular GCD, Interactive Matrix, Lonely Cycles

September Challenge 2018 Division 1

AND Square Subsegments, Bad Shuffle

November Challenge 2018 Division 1

Binary Strings

March Challenge 2019 Division 1

Chef and Soccer, Cheating on Queue, Perfect Tree Problem, Treasure Hunt, Yet Again a Subarray Problem, Matchable Permutations, (Challenge) Interleaving Strings

April Challenge 2019 Division 1

Offer for Chef, Kira Loves Palindromes, Playing with Numbers, Subtree Removal

August Challenge 2019 Division 1

Guddu and his Mother, Dilemma, Maximize an Expression, Chef and Gordon Ramsay

September Challenge 2019 Division 1

Biladerim Icin, Fuzzy Linear Combinations, Expected GCD, Doofish Set, Dodgers, Power Sum, Chef Designed a Network, (Challenge) Sebi and CPU Design

Total Problems Solved: 194