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Programming and DSA

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Practice Compete Compiler
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Programming and DSA

Learn to think like a programmer. Develop your problem-solving skills with essential data structures and algorithms.

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Programming and DSA

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Programming and DSA

Learn to think like a programmer. Develop your problem-solving skills with essential data structures and algorithms.

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Practice Compete Compiler
Home » Ryotaro Sato
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Ryotaro Sato

  • 7★hitonanode
  •   Japan
  • Professional
  • No Active Plan. View Details

Submissions Heat Map

Rating Graph

No. of Contests Participated: 31
2951 (+1)RatingProvisional
Rating i Provisional Rating, click to know more
Starters 115 Division 1 (Rated)(2024-01-03 22:30:00)
Global Rank:   9
Cheated in:   

Ratings System Update

(2024-01-03 22:30:00)
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2931 (+14)RatingProvisional
Rating i Provisional Rating, click to know more
September Lunchtime 2022 Division 1 (Rated) (Based on EJOI)(2022-12-20 00:00:00)
Global Rank:   7
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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Contests (31)

February Lunchtime 2020 Division 2

Painter Problem, At the Gates, Swapping to Palindrome, Not All Flavours, Monsters Battle, Secret Mission

March Lunchtime 2020 Division 2 (Unrated)

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

April Lunchtime 2020 Division 2

Dot Time, Xor Jar Muluk Tar, Triangle Query, Another Birthday Present!, Positive Mex, Chef in Fantasy League

May Lunchtime 2020 Division 1

Escape One, Convert the String, Tree difference

July Cook-Off 2020 Division 1

What Is This, a Crossover Episode, MEX-ception, The In-XOR-able Task, Even-tual Reduction, OR-thodox Distinction, Path-etic Products

July Lunchtime 2020 Division 1

Profitable Paths 2, Golomb Sequence, Binary Concatenation , Pairs of Pairs

June Lunchtime 2020 Division 1

Maximum AND, Kuroni and the Cowsheds, Gold Mining, Square Submatrices

January Lunchtime 2021 Division 1 (Unrated)

Good Grid, Shifting Spoons, Dreams of Divisibility, Even Sum

November Cook-Off 2020 Division 1

Flip the String, Chef and IPC Certificates, Graph Construction, Set Queries, Communication Channel, Hiring Workers

September Lunchtime 2020 Division 1

Root the Tree, Robot Detector, Few Different Elements

April Lunchtime 2021 Division 1

A Special Tree, Hackerman, Intersection Matrix

May Lunchtime 2021 Division 1

Tokens On A Tree, Total Components, K-Subarrays

June Challenge 2021 Division 1 (Unrated)

Minimum Dual Area, Shortest Route, Bitwise Tuples, Bella ciao, Dual Distance, Maximum Frequent Subarray Sum, Summer Heat, MathBuzz, Optimal Xor Set, Minimum Subtree Cover

June Lunchtime 2021 Division 1

From Rational to Binary, HTML Tags, Hidden Cell, Node Marking, Tic Tac Toe

July Cook-Off 2021 Division 1

Beautiful Subsequence, Mod Equality, Hidden Colored Graph, Make the Matrix Beautiful

August Lunchtime 2021 Division 1

Bunny Hops, Just a Graph, Longest Spanning Substrings, Chef and Deque

September Cook-Off 2021 Division 1

Chess Kings Chasing Game, Chef and Pairwise Distances, Permutation and GCD Set, Half Sequence, Fake Swaps

SnackDown 2021 - Online Qualifiers

Lucky Number, Maximum Number Of Distinct Elements, Minimise Difference

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, Mega mu - 2

SnackDown 2021 - Online Elimination Round (Rated for all)

Random Convex Hull, Graduate Work Matters, Sorting Segments

December Cook-Off 2021 Division 1

Binary String Game, Destructive Nim, Tree and Brilliant Array, RGB Construction, Break the Balance

December Lunchtime 2021 Division 1

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

January Cook-Off 2022 Division 1

Unreasonable Updates, Palindromes Not Allowed, Mean Maximization, Subsegment Divisibility , Mask Policy, Merged LIS, Hungry Ashish, Boring Trip, Prime Graph, Beautiful Permutation, Erase All But One

January Lunchtime 2022 Division 1

Circular Permutation Recovery, Permutation XOR Sum, Permutation Deletion

April Cook-Off 2022 Division 1

Chef Goes Shopping, Sorted Distances, Sequence Cost

April Lunchtime 2022 Division 1(Rated)

Modular Circular Permutations, Do Not Touch the MEX!!!, Secret Machine Mania, AND Palindromes

May Lunchtime 2022 Division 1 (Rated)

Balanced 0-1 Tree, Equal After And, Rearrange Ranges

July Cook-Off 2022 Division 1 (Rated)

Median Pairs, String Break, Partition Queries, Segmentation Fault, Subsequence LCM

June Cook-Off 2022 Division 1 (Rated)

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

August Lunchtime 2022 Division 1 (Rated)

Sort the Array, Tree Coloring, Subtract 12 Operation, Maximal Prefix After Flip, MEX Permutation Difference

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

Increasing Addition, Remove Numbers, Adjacent Pairs, Where Is the Root, Longest Unfriendly Subsequence

February Cook-Off 2023 Division 1 (Rated)

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

Starters 93 Division 1 (Rated for All)

Thank U, Next, Why Try, Positions, NASA, Greedy, Bloodline, Motive

Starters 113 Division 1 (Rated)

Count Distinct Arrays, Counting Is Fun, Maximise The Minimum, Minimise Maximum Subarray Sum, Make All Equal, Score Sum, Maximum Score , Sum Neq , Trees Are Fun, Make N Zero, Thala For A Reason

Starters 114 Division 1 (Rated till 6 Stars)

Game on Array, Make Same, Chef and Tag, Rock-Paper-Scissors, Lexicographic Rook on a Graph, Divisor Sum, Painting Walls, Christmas Candy, Christmas Greetings

Starters 115 Division 1 (Rated)

Delete The Array, Subtraction Sequence I, Subtraction Sequence II, Greedy LIS Algorithm, Binary Grid Forces, Make All Zero

Starters 142 Division 1 (Rated till 5-Stars)

Sum of Xors, Pairs Sum with Length x, Ratist Behaviour, The Cards Machine, Chef loves Pizza Chef loves halfs, Writing Speed, Penalty Shoot-out, Array Removal, Number Hunt

Starters 167 (Rated till 5 stars)

Alternate Universe, Counting Good Numbers, Temperature Balance, Happy New Year!, Lottery Tickets, Sum Over Subarrays, Delete Not Equal, Grid Construction (Even), Grid Construction (Odd)

Starters 169 (Rated till 5 stars)

Substring Strategy, No Palindromes, Constant Subsequence, Hamming equivalent, Make K Most Frequent, Opposite Attract, Entry Check, Tree Queries

Starters 171 (Rated till 5 star)

Squid Game - Piggy Bank, Swish Game, Advitiya Security Vault, Strange Nim Game, Prefix OR, White Wall, Advitiya, Volcanic Eruption, Pair Making Problem

Starters 173 (Rated upto < 2700)

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

Total Problems Solved: 276

2951
(Div 1)
★★★★★★★
CodeChef Rating (Highest Rating 2951)
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  • Inactive Country Rank

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Contest Contender - Silver Badge

Contest Contender - Silver Badge

Received for participating in 25 Contests

Problem Solver - Silver Badge

Problem Solver - Silver Badge

Received for solving 250 Problems

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