Tatsuhito Yamagata

• Username: 7★tatyam
• Country:  Japan
• Student/Professional:Student
• Institution:Tokyo Institute of Technology
• 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

2609 (-16)RatingProvisional
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Starters 200 (Rated for all)(2025-08-20 23:00:00)

Global Rank:   48

Cheated in:   

Ratings System Update

(2025-08-20 23:00:00)

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2531 (+81)RatingProvisional
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December Lunchtime 2021 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 (12)

March Challenge 2019 Division 2

Chef and Number Game, Chef got Recipes, Chef and a Beautiful Digit

March Lunchtime 2020 Division 2 (Unrated)

Maximize LCM, Strip in a Tree!, Chef Swaps Digits, Good Prefix

May Lunchtime 2021 Division 3

Birthday Gifts, Charges, Hoop Jump, Tom And Jerry 1, Total Components, K-Subarrays

July Lunchtime 2021 Division 2

Beautiful Pairs, Xor Separation, Array Rotation Returns, Longest Good Segment

SnackDown 2021 - Online Qualifiers

Maximum Number Of Distinct Elements, Lucky Number

SnackDown 2021 - Online Round 1A

Round Robin Ranks , Dance Moves, Equal Beauty, Min Max LCM

SnackDown 2021 - Online Round 1B

Queens Placement

SnackDown 2021 - Online Pre-Elimination

Mega mu - 1, Mega mu - 2, Guests like slippers, Product Pain, Non-Decreasing Subsequence of size K

SnackDown 2021 - Online Elimination Round (Rated for all)

Random Convex Hull, Graduate Work Matters, Sorting Segments, Sorter Prodigy

December Lunchtime 2021 Division 1

Optimal Sorting, Point constraints, Sleep Technique , In-tree-active Node Coloring, Romantic Reversals

February Cook-Off 2023 Division 1 (Rated)

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

Starters 83 Division 1 (Rated)

Mex Segments, Beauty Sum, Construct String, Order by XOR, Rotate to Minimum, Restoration

Starters 111 Division 1 (Rated till 6 Stars)

LCM Mania, Prefixing, Prime Range Game, Beautiful Strings

Starters 144 Division 1 (Rated)

Largest K, Find P, Minimise Inversions, Sort Lexicographically

Starters 173 (Rated upto < 2700)

Cool Subsequences, Introverts, Cool Checker, Min-Max Product Partition, Time Penalty, Overwrite

Starters 193 (Rated for all)

Mex Tree (Min), Shop Game (Easy), Add Permutation

Starters 200 (Rated for all)

Permutation Counting (Easy), Minimum Set, Split Subarray Sort, Restrict Palindromes

Total Problems Solved: 71