Tähvend Uustalu

• Username: 7★thuustalu
• Country:  Estonia
• Student/Professional:Student
• Institution:Technical University of Munich Germany
• 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: 29

Current Ratings Graph Old Ratings Graph

2593 (+21)RatingProvisional
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February Cook-Off 2023 Division 1 (Rated)(2023-02-08 22:30:00)

Global Rank:   29

Cheated in:   

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(2023-02-08 22:30:00)

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2572 (+17)RatingProvisional
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September Lunchtime 2022 Division 1 (Rated) (Based on EJOI)(2022-12-20 00:00:00)

Global Rank:   36

Cheated in:   

Ratings System Update

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

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Learning Paths (0)

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Contests (29)

January Long Challenge 2016

Chef and Inflation, Rupsa and the Game, Churu and Balls, Chef and Making Triples, Cyclist Race, Chef and Time Machine, Devu and Perfume

February Challenge 2016

Chef and Strange Operations, Devu and a light discussion, Rectangles of Love, Chef-Detective

November Challenge 2016

Count Permutations, Friends Meeting, Urban Development, Gift and Chef, Chef and squares, Task for Alexey

December Challenge 2016

Train Partner, Kirito in labyrinth

January Cook-Off 2016

Chef and Fruits

November Cook-Off 2016

Sebi and the highway

January Challenge 2017

Cats and Dogs, Digits Cannot Separate, Reservior

February Challenge 2017

Eugene and big number, Chef and Triangles, Chef and His Apartment Dues, Most Frequent Element

February Lunchtime 2017

Bear and House Queries, Bear and Milky Cookies

May Lunchtime 2017

Prefix Inversions

June Lunchtime 2017

Maximum Unique Segment, Two Numbers, Company and Club Hierarchies

July Challenge 2018 Division 1

Pizza Delivery, Tom and Jerry, Reach Equilibrium, Chef and War with Taran (Challenge), Subway Ride, No Minimum No Maximum, Gears

August Challenge 2018 Division 1

Modular GCD

July Challenge 2019 Division 1

Hit the Coconuts, Snake and Apple Tree, Guess the Prime!, Codechef War, LOVEMUFFIN, Circular Merging

November Challenge 2019 Division 1

Physical Exercise, Smallest Beautiful Number, From Zero to Infinity, A Simple Game, Single Point of Failure, Winning Ways, Pretty Boxes, (Challenge) Coloring Triangulations, D-Dart

November Challenge 2020 Division 1

Panic! at the Disco, Chef and the Combination Lock, Connect on a Grid (Challenge), Restore Sequence, Magical Candy Store, Red-Black Boolean Expression, Scalar Product Tree, Unusual Queries

January Challenge 2021 Division 1

Expected Number of SCCs

December Challenge 2020 Division 1

Hail XOR, Square Root of LCA Convolution, Calculus, Linear Combination, Permutations, Digit Matrix, String Operations, Palindromic Equivalence, Positive Prefixes, Even Pair Sum

January Cook-Off 2021 Division 1

Mex Subsequence, Not Too Colourful, Prefix And, Common Ancestors

December Lunchtime 2020 Division 1 (Unrated)

K-Tuple Tree, Even Sequence, Three Letters, XOR-ed Palindromes, One Zero Swaps

June Cook-Off 2021 Division 1

Binary String on Steroids, Battle Royale, Polynomial Root

July Lunchtime 2021 Division 1

Xor Separation, Longest Good Segment

August Cook-Off 2021 Division 1

Odd Array, Different String, Interactive Equivalency, Clear the Array

SnackDown 2021 - Online Qualifiers

Lucky Number

October Lunchtime 2021 Division 1

Median Rearrangement, Tree Upshot, Maximum GCD

SnackDown 2021 - Online Round 1A

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

SnackDown 2021 - Online Pre-Elimination

Non-Decreasing Subsequence of size K, Good ranking, Product Pain, Guests like slippers, Mega mu - 1

December Cook-Off 2021 Division 1

Binary String Game, Destructive Nim, RGB Construction, Break the Balance

June Cook-Off 2022 Division 1 (Rated)

Permutation Segments, Throw and Take, Simple XOR, Prefix Suffix Distinct, Split AND Sum

June Lunchtime 2022 Division 1 (Rated)

The Lost Array, Max Shift After XOR, XOR Times 2 Is Sum, Minimum Xor On Segment, XOR, The Detective

September Lunchtime 2022 Division 1 (Rated) (Based on EJOI)

Increasing Addition, Adjacent Pairs, Longest Unfriendly Subsequence

February Cook-Off 2023 Division 1 (Rated)

Take Not Less, Alice Potter and OWL, Alice Potter And Dumbledore Army

Total Problems Solved: 156