Chang Feng

• Username: 6★flukehn
• Country:  China
• Student/Professional:Student
• Institution:Xidian University, China China
• 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: 12

Current Ratings Graph Old Ratings Graph

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November Cook-Off 2021 Division 1(2021-11-22 00:00:00)

Global Rank:   4

Cheated in:   

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(2021-11-22 00:00:00)

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2229 (-40)RatingProvisional
Rating i Provisional Rating, click to know more

November Cook-Off 2021 Division 1(2022-12-20 00:00:00)

Global Rank:   4

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 (12)

November Challenge 2017

Chef Hates Palindromes, Chef and Subarray Queries, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes, Product on the segment by modulo

March Challenge 2018 DIV 2

A Big Sale, Embedding a Tree (Challenge), Minion Chef and Bananas, Minions and Voting, Chef and Glove, Mix the Colors, Chef and Gcd Queries, Chef and Easy Problem, Pishty and Triangles

April Challenge 2018 Division 2

Highway Crossing, Workers, Average of Pairs, Count Good Prefixes, Weight of Numbers, Cutting Plants, Vaibhav and Ministers, Chef and Array (Challenge)

May Challenge 2018 Division 1

S-T Mincut, Change the Signs, Edges in Spanning Trees, Fake Binary Search, Dibs on Fibs

June Challenge 2018 Division 1

Two Flowers, Binary Board, Archi and Tree, Expected Buildings, Ways to Work, Vision

October Challenge 2018 Division 2

Chef and Serves

January Challenge 2019 Division 2

Fancy Quotes, Chef and Modulo Game, Distinct Pairs, Different Neighbours, Yet Another Problem About Sequences, Lucky Number Game

April Challenge 2019 Division 2

Playing with Numbers, Friend or Girlfriend, Maximum Remaining, Fencing

May Challenge 2019 Division 2

Binary Movements, Ada Pawns, Where to Build the Roads, Reduce to One, Trees and Degrees, Matches, Ada Rooks 2, (Challenge) Chef Exchange

June Challenge 2019 Division 1

Sum and GCD, Intersecting Paths, Chef and His Dish, Count Arrays, Lent Money, Chef and Ingredients

October Challenge 2021 Division 1 (Unrated)

Longest AND Subarray, Digit Removal, MEX-OR

Code: Nium Challenge

Alphabet Difference, Divide Students Into Classes, Queries in an Array

November Cook-Off 2021 Division 1

Product Pain, Guests like slippers, Good ranking, Non-Decreasing Subsequence of size K

December Challenge 2021 Division 1 (Unrated)

Increasing String , Valleys and Hills, Rock Paper Scissors, Pyramid Traversal

Monday Munch - DSA Challenge 10

Robot Movings, Odd Sum Pair, Divide Pages, Triplets Min, Good subarrays, How much you lack

Total Problems Solved: 81