Konstantin Semenov

• Username: 7★zemen
• Country:  Russia
• Student/Professional:Professional
• Organisation:
• 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: 10

Current Ratings Graph Old Ratings Graph

2757 (+18)RatingProvisional
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January Lunchtime 2022 Division 1(2022-01-29 23:00:00)

Global Rank:   17

Cheated in:   

Ratings System Update

(2022-01-29 23:00:00)

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2757 (+93)RatingProvisional
Rating i Provisional Rating, click to know more

January Lunchtime 2022 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 (10)

July Cook-Off 2016

Chef and Numbers, Chef and Land, Chef and Array, Chef and Sort, Chef and Proportion

October Mega Cook-Off 2018 Division 2

Binary Nim 2, Power Tree, Ada and the Staircase, Pumping Water, Ada Bishop

December Challenge 2018 Division 1

Chef and Interactive XOR, Edge Addition, Directing Edges, Max and Electrical Panel, Colorblind Feast

November Lunchtime 2018 Division 1

Useful Number, Median, Maximize It, Probability, Beats and Pieces

March Lunchtime 2019 Division 1

Corrupted Seven-Segment Display, Tree Flow, Travelling Saleschef, Partition into Permutations

April Challenge 2019 Division 1

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

May Cook-Off 2019 Division 1

Misha and Nice Sets, Bitsetbaba and Power Grid, Expected Xor, Searching for a Biclique

May Lunchtime 2019 Division 1 (Unrated)

Grid Tour, Reverse Maximisation

SnackDown 2021 - Online Qualifiers

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

SnackDown 2021 - Online Round 1A

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

SnackDown 2021 - Online Pre-Elimination

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

SnackDown 2021 - Online Elimination Round (Rated for all)

One Change Subsequences, Random Convex Hull, Graduate Work Matters, Sorting Segments

January Lunchtime 2022 Division 1

Circular Permutation Recovery, Permutation XOR Sum, Permutation Deletion

Total Problems Solved: 60