Alex Yingna

• Username: 6★ayingna
• Country:  North Korea
• Student/Professional:Other
• CodeChef Pro Plan: No Active Plan. View Details

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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

2212 (+162)RatingProvisional
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Starters 175 (Rated till 5 stars)(2025-02-26 22:00:00)

Global Rank:   2

Cheated in:   

Ratings System Update

(2025-02-26 22:00:00)

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1864? (+169)RatingProvisional
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CodeChef Starters 6 Division 3 (Rated)(2022-12-20 00:00:00)

Global Rank:   5

Cheated in:   

Ratings System Update

(2022-12-20 00:00:00)

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Learning Paths (0)

Practice Paths (2)

2000 to 2500 difficulty problems

10%

Dynamic programming

43%

Contests (10)

CodeChef Starters 6 Division 3 (Rated)

Chefs Homework Dilemma, Even tuples, Palindromic number, Three Dices, Cricket Ranking, Joker and Batman

August Challenge 2021 Division 2 (Unrated)

Alternating LG Queries, Olympics Ranking, Problem Difficulties, Fat Hut, Chef and Digits of Large Numbers, Charge Scheduling, Chef and Bulb Invention, Geometry 1, Array Filling, Special Triplets

September Challenge 2021 Division 2 (Unrated)

Treasure Hunt, Minimum Digit Sum 2, Covaxin vs Covishield, Travel Pass, Airline Restrictions, 2-D Point Meeting, Minimize Digit Sum, Shuffling Parities, XOR Equal

SnackDown 2021 - Online Qualifiers

Prefix as a Substring 2, Lucky Number, Maximum Number Of Distinct Elements, Minimise Difference

October Challenge 2021 Division 2 (Unrated)

Chef at the Olympics, Longest AND Subarray, Digit Removal, MEX-OR, Yet another MEX problem, Characteristic Polynomial Verification, Hidden Points

SnackDown 2021 - Online Round 1A

Equal Beauty, Lazy Machine, Min Max LCM, Round Robin Ranks , Yet Another Flipping Problem, Dance Moves

Starters 81 Division 2 (Unrated)

Divide Pages

Starters 84 Division 2 (Rated)

MEX Sequences, SUM OR, Max count of 1, Digit Operation, Max Binary, Chef And Adjacent Sums

Starters 83 Division 2 (Rated)

Order by XOR, Construct String

Starters 102 Division 1 (Rated till 6 Stars)

Circular Trouble

August Long 2023 Division 1 (Unrated)

All New CodeChef, Maximum Deliciousness, I Can Use Both Hands!

September Short 2023 Division 1 (Unrated)

GCD Discount, Ultimate Fencing, Lucky Seven, Slow Start, Mixing Extraordinaire

Starters 112 Division 2 (Rated)

Cursed Indices, Max Nutrition, 3 Logicians Walk into a Bar, Permutation Construction

Starters 142 Division 2 (Rated)

Sum of Xors, Pairs Sum with Length x, The Cards Machine, Chef loves Pizza Chef loves halfs, Array Removal, Number Hunt

Starters 143 Division 2 (Rated)

Max Min and Length, Lex Min Binary String, Binary Conversion, Spread of Ratism, Non-Divisor Array, Split Sort Permutation

Starters 145 Division 1 (Rated till 6-Stars)

Make Bob Win , Square String

Starters 175 (Rated till 5 stars)

The Skip Game, Alternate It!, Build Sum, Multiplexer

Total Problems Solved: 167