hehao

• Username: 5★hehaodele
• Country:  China
• Student/Professional:Student
• Institution:Peking University
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

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

Rating Graph

No. of Contests Participated: 25

Current Ratings Graph Old Ratings Graph

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October Cook-Off 2020 Division 1(2020-10-19 00:00:00)

Global Rank:   27

Cheated in:   

Ratings System Update

(2020-10-19 00:00:00)

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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2195 (-184)RatingProvisional
Rating i Provisional Rating, click to know more

October Cook-Off 2020 Division 1(2022-12-20 00:00:00)

Global Rank:   27

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 (25)

April Challenge 2013

Barcelona Gameplay Tactics, Maximum Weight Difference

July Challenge 2013

Chef and Walking on the rectangle , Count K-Primes, Circle of death

February Challenge 2014

Little Elephant and Movies, Draughts, Make It Zero, Make Him Happy, Chef and Favourite Sequence, Graph Challenge, Count on a Treap, Longest Common Pattern, Little Elephant and Subarrays, Colored Array, Make It Zero 2

March Challenge 2014

Team Split, Binary Tournament, Walk, Maximum number, GCD condition, Little Chef and Numbers, Mike and Stamps

April Challenge 2014

Counting Matrices, Farmer Feb, Cards, bags and coins, Chef and Digits, Divide the Tangerine, Shortest Path in Binary Trees

August Challenge 2014

Mountain Holidays 2, Little Elephant and T-Shirts, Chef and Reversing, The Leaking Robot, Earthquake, Cleaning Tables, Chef and Gift

September Challenge 2014

Sereja and Bubble Sort, Chef and Rainbow Array - 2, Chef and Swaps, Chef and Left-Right, Chef and sequence, Rectangle Query, Fun with Rotation, Flooring

November Challenge 2014

Chef and Words, Distinct Characters Subsequence, Chef and Red Black Tree, Let us construct palindrome

January Lunchtime 2014

Chef and Shop, Chef and String, Chef and Numbers, Chef and Way

June Lunchtime 2014

Substring Query, Coprime Triples, The Smallest Pair, Dynamic Inversion

July Lunchtime 2014

And Operation, Shift The String

February Challenge 2015

Chef and Chain, Time to Study Graphs with Chef, Chef and Strange Formula, Chef and Strings, Let us play with rank list, Xor Matrix, Chef and Equality

December Challenge 2016

Train Partner, Kirito in labyrinth

April Challenge 2019 Division 1

Offer for Chef, Kira Loves Palindromes, Mininum XOR over Tree, Playing with Numbers, Subtree Removal, Edgy, Moving Rectangles (Challenge)

May Challenge 2020 Division 1

Buying a New String, Triple Sort, Binary Land, Sorting Vases, Not a Real World Problem, Chef and Bitwise Product, (Challenge) Nanobots

May Cook-Off 2020 Division 1

Chef, Chefina and Their Friendship, Chefina on a Trip, Roads in Chefland

April Lunchtime 2020 Division 1

Xor Jar Muluk Tar, Positive Mex

May Lunchtime 2020 Division 1

Convert the String, Tree difference

June Challenge 2020 Division 1

The Tom and Jerry Game!, Operations on a Tuple, The Delicious Cake, Convenient Airports, Guessing Game, Perfect Partitions, Covid Sampling (Challenge), Danya and Different Values

July Cook-Off 2020 Division 1

What Is This, a Crossover Episode, Even-tual Reduction, OR-thodox Distinction, Path-etic Products

August Cook-Off 2020 Division 1

Red-blue Trees, Polygon Relationship

August Lunchtime 2020 Division 1

Game on a Strip, Quest for Dragon Balls, Counting Graphs, Alien Invasion

RECode 12.0 (Rated for all)

Chef and String, Chef and Walk, Chef and Rotation, Chef and Numbers

October Cook-Off 2020 Division 1

Path-etic Sums, The In-XOR-able Task, Yet Another Crossover Episode

Total Problems Solved: 166