CodeChef Logo CodeChef Logo
Courses

Programming and DSA

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

Career Paths

From beginner to job-ready. Explore our curated career paths designed to help you succeed in the tech industry.

Other Courses

Programming and DSA

Explore courses

Catalogue

Programming and DSA

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

Career Paths

From beginner to job-ready. Explore our curated career paths designed to help you succeed in the tech industry.

Other Courses

Explore courses
Practice Compete Compiler
Upgrade to Pro
Courses

Programming and DSA

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

Career Paths

From beginner to job-ready. Explore our curated career paths designed to help you succeed in the tech industry.

Other Courses

Programming and DSA

Explore courses

Catalogue

Programming and DSA

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

Career Paths

From beginner to job-ready. Explore our curated career paths designed to help you succeed in the tech industry.

Other Courses

Explore courses
Practice Compete Compiler
Home » natsugiri
user profile

natsugiri

  • 7★natsugiri
  •   Japan
  • Professional
  • Home
  • No Active Plan. View Details

Submissions Heat Map

Rating Graph

No. of Contests Participated: 159
2773 (-6)RatingProvisional
Rating i Provisional Rating, click to know more
July Lunchtime 2022 Division 1 (Rated)(2022-07-17 23:30:00)
Global Rank:   21
Cheated in:   

Ratings System Update

(2022-07-17 23:30:00)
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?
2773 (+116)RatingProvisional
Rating i Provisional Rating, click to know more
July Lunchtime 2022 Division 1 (Rated)(2022-12-20 00:00:00)
Global Rank:   21
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)

None

Practice Paths (0)

None

Contests (159)

August Long Contest 2011

Infinite Grid Game

October Cook-off

Generalized Arithmetic Progression Free Sequence, Chef Travel Routes

November Long Contest 2011

Chefs new Pet

December 2011 Long Contest

Robot Movings

December Cook-Off

Ciel and New Menu, Ciel and A-B Problem

January 2012 Challenge

Houses and Restaurants

February 2012 Cook-off

Daily Train, Equation Solver

March 2012 Challenge

Longest Weird Subsequence, Cosine Partition Function, Lucky Number, Free Shuttle Service, Home Delivery, Spoon in Matrix, Xor it

March Cook-Off 2012

Ciel Numbers I, Ciel Numbers II

April Challenge 2012

Fit to Play, Double Strings, Stacking Pancakes, Greatest Dumpling Fight

April Cook-Off 2012

Top Batsmen, Resistance

May Challenge 2012

Jewels and Stones, Lucky lucky number, Divisible Pairs, Remember the recipe, A Home for Chef

May Cook-Off 2012

Little Elephant and Balance, Little Elephant and Strings

June Challenge 2012

Little Elephant and Product, Little Elephant and Candies, Doom Bakes Cakes, Arranging Cup-cakes

June Cook-Off 2012

Closing the Tweets

July Challenge 2012

Chef's Dream, My Fair Coins, The Gray-Similar Code, Little Elephant and Bubble Sort, Gift Rift, Restaurant Rating, Addition chains

August Challenge 2012

Little Elephant and Bombs, Lucky Driving, Block Game, Range of Data, Delivery Boy, Machine Gun

August Cook-Off 2012

Forced Output, Code Crazy Minions

September Challenge 2012

Kisses & Hugs, Chef World, Racing Horses, Queries About Numbers, ChefTown Parade, Three is Crowd

October Challenge 2012

Team Formation, Little Elephant and Order, Fierce Battles, Event Organizer, Maximum Sub-rectangle in Matrix, Blade Master, The New Scheme, Need More Diamonds

September Cook-Off 2012

Prime Permutations, Recipe Reconstruction, Carvans, Coal Scam

October Cook-Off 2012

Buying Sweets, Equalization, Tennis Tournament

November Challenge 2012

Lucky Balance, A Wonderful Chocolate, Delicious Dishes, Candy Collecting Game, Coin Flip, Jam Board, Many Left, Sridhar Likes Travelling

November Cook-Off 2012

Little Elephant and Permutations, Little Elephant and Divisors

December Challenge 2012

Sereja and Data Structures , Granama Recipes, Book Exercises, Magic Rankings, The Uncountable Ways, Pizza Delivery

January Challenge 2013

Little Elephant and Alcohol, Dividing Products, The Minimum Number Of Moves, End Of The World, Chef of the Year, Three Different Numbers

February 2013 Challenge

Little Elephant and Cards, Buy1-Get1, Climbing Stairs, Word Play

February Cook-Off 2013

Lack of Logic, Row and Column Operations, Hotel Balifornia 2

March Challenge 2013

Tourist Translations, Approximately, Fire Escape Routes

March Cook-off 2013

The Ball And Cups, Palindrome

April Challenge 2013

Little Elephant and Music, Barcelona Gameplay Tactics, ChefGame, Kingdom Unity, Fault Tolerance, Maximum Weight Difference, Levy Conjecture

April Cook-Off 2013

Andrew and the Birthday, Andrew and the Meatballs, Andrew and the Strings, Andrew and the Meatballs again

May Challenge 2013

Matchsticks, Witua and Math, Tree Counting, Password Cracking Challenge, Juno Puzzle for May, Name Reduction, Your Name is Mine, Field Trip

June Challenge 2013

Little Elephant and Mouses, Collecting Magical Berries, Just Some Permutations 3, Dessert Wizard, Two k-Convex Polygons, Count Special Matrices, Predictopus, To challenge or not, W String, Lapindromes

May Cook-off 2013

Subtraction Game 1, Subtraction Game 2

June Cook-Off 2013

Attic Crossing, Lyra and the Alethiometer

July Challenge 2013

Mountain Holidays, Galactik Football, The Probability Of Winning, Chef and Walking on the rectangle , Count K-Primes, Circle of death

July Cook-off 2013

Chopsticks, Compressed String, A Plus B Again!

Lunch Time July 2013

Cooking dishes, Paying optimally

August Challenge 2013

Little Elephant and Lemonade, Music & Lyrics, Hello Hello, Save The Princess, The Number Of Solutions, Chef and Segments, Sereja and Ballons, Deleting numbers, Splitting Candies

August Cook-Off 2013

Chef and The Right Triangles, Chef and The Divisibility Queries, Chef and The String of Digits

August Lunchtime 2013

Pairwise AND sum, Matrix

September Challenge 2013

Little Elephant and Exams, Cool Guys, Chef and Integers , Project Spoon, CAO Stage-1, CAO Stage-2

October Cook-Off 2013

Polo the Penguin and the Lucky String, Polo the Penguin and the Numbers, Polo the Penguin and the Test, Polo the Penguin and the XOR

September Lunchtime 2013

Chef and Magic Numbers , Chef and Gift, Chef and Pie, Chef and Science

November Cook-off 2013

Am I a Fibonacci Number, Lowest Sum, Number of Paths, Trees and Subtrees, Rank of the Number

February Cook-Off 2014

Chef and Remissness, Chef and Kingship, Chef and Reunion

March Cook-Off 2014

Game of Divisors, ABC-Strings, 3-Palindromes, Dividing Stamps

May Cook-Off 2014

Book Game with Chef, Divide the Cake, Ups and Downs

August Cook-Off 2014

Tree Game, Permutation Shuffle

April LunchTime 2014

Minimum Product, Minion Circle, Knight Fork, Tracy and Charlie

May Lunchtime 2014

Divisible Subset, Approximately II

June Lunchtime 2014

Coprime Triples, The Smallest Pair, Dynamic Inversion

November Lunchtime 2014

A wolf, a sheep and cabbage, Deja Vu, Yet another substring problem, Dividing the Students

December Lunchtime 2014

Delivery Man, Sum Of Binomial Coefficent , Queries On Tree, String Matching

November Challenge 2015

Ingredients, Receipt Recovery, Chef and collection of stamps, Eugene and function, Simple Sum, Chef and cakes, Period on tree

February Cook-Off 2015

Zombinatorial, Parenthesis with Maximum Sum Subarray, Fit Squares in Triangle, Strategy for the World Cup

March Cook-Off 2015

How to Minimize a String, How to Choose a Subset, How to Write a Message, How to Repaint a Fence

April Cook-Off 2015

Lucky Fives, Special Agents, Taxi Driver, Equality, Version Control System

May Cook-Off 2015

Devu, his friends and birthday gifts, Devu and friendship testing, Devu and decorating birthday cake, Devu and most energetic minion

June Cook-Off 2015

Ankit, Srijan and a game of stone piles, Longest non regular parentheses sub-sequence, Strange operations

July Cook-Off 2015

Cops and the Thief Devu, Maximize Disjoint Pair Sum, Path containing K Nodes, Adding Special Sum

August Cook-Off 2015

Chef and the XORed Number , Chef and the Wildcard Matching

October Cook-Off 2015

Palindrome Pairs, Second LIS, Word Stem, Almost Sorted Permutation

February Lunchtime 2015

Lucky Four, The Warehouse

June Lunchtime 2015

Chef and Bitwise OR Operation, Chef and Submatrix, Chef and Two Strings, Chef and Sets

July Lunchtime 2015

Greedy puppy, Puppy and GCD, Puppy and game, Puppy and cats

August Lunchtime 2015

Churu and lost string, Gaming Inversion, Make Palindrome, Minimum Maximum

December Lunchtime 2015

Computer Network, Ancient Berland Roads, Buying Seedlings, Distinct Codes

January Cook-Off 2016

Chef and Destruction, Chef and Maximum Sum Matrices , Chef And Fibonacci Tree, Chef and Fruits

February Cook-Off 2016

Puppy and Palindromes, Puppy and Triangles, Puppy and Catchers, Puppy and Board, Puppy and Sum

March Cook-Off 2016

Not even planar, Digital clock, Dual Nim, Alternating subarray prefix

May Cook-Off 2016

Phantasialand

June Cook-Off 2016

Sticks, Right Triangle, Chef Land, Range Minimum Queries

July Cook-Off 2016

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

September Cook-Off 2016

Lazy Jem, The Lost Arithmetic Sequences, Counting Strings, Shortest path queries, Find The Point

October Cook-Off 2016

Sherlock and the Ugly Flower, Watson asks Does Permutation Exist, Sherlock Counts Ways, ChefWatson uses Social Network, Sherlock and Smallest Window

November Cook-Off 2016

Sebi and the highway, Sebi and the corrupt goverment

February Lunchtime 2016

Chef and Socks, Chef and Tic-Tac-Toe, Chef and Polygons, Chef and Dominating Subarrays

September Lunchtime 2016

Chef and Inequality

November Lunchtime 2016

Chef and his Students, Chef and Square Set

December Lunchtime 2016

Superheroes and villains, Fly height mode, MST Queries

February Cook-Off 2017

Download file, Chairs, Cooking Game

April Challenge 2017

Chef and Digits, (CH) Serejs and Billiards, Bear and Random Grid, Chef and Divisor Tree, Stable market, Heavy-Light Decomposition, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes

March Cook-Off 2017

Rainbow Graph, Meeting location, Yet Another Card Game, Increasing Xor Sequence, Safe Robot

June Cook-Off 2017

Ada and crayons, Knight Covering, A Study in Bake Street, SnackUp, Centeroid

August Cook-Off 2017

Game on Stick, Matrix and Chef, Real obtuse, From heaven to earth

March Lunchtime 2017

Bear and Haircut, Bear and Ladder, Bear and Species

April Lunchtime 2017

Bear and Digit Virus, Bear and Segments, Closest points queries, Bear and Segment 01

June Lunchtime 2017

Maximum Unique Segment, Two Numbers, Company and Club Hierarchies

August Lunchtime 2017

Mathison and the Dynamo shuffle, Mathison and pangrams, Mathison and the teleportation game

March Cook-off 2018 Division 1

Chef Goes to the Cinema, Chef Restores an Array, Chef Chooses a Subset, Chef Restores a Matrix

April Cook-off 2018 Division 1

Run Direction, Binary Nim, Chef Goro, Hamel Paths

May Cook-off 2018 Division 1

Difficult Choice, Best Cake Ever, Searching for the Recipe

July Cook-Off 2018 Division 1

Sticks, OR Matrix, Finding Second Maximum, Chef and GCD Game

September Mega Cook-Off 2018 Division 1

OneTwo, Learning Dishes, Make a Permutation, Ghayeeth vs Siroj

May Lunchtime 2018 Division 1

Count Substrings, Shifted Palindrome, Weak in the Middle, Maximum Plus

July Lunchtime 2018 Division 1

Forced Particles, GCD Sum, Make a String, Prime divisors

September Lunchtime 2018 Division 1

Biased Judgement, Opposite Cites, Chef Restaurant , Match the Streams, Coin Partition

November Lunchtime 2018 Division 1

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

December Lunchtime 2018 Division 1

Choosing from Buckets, Drawing Lines, Maximize the NOSS, Find Best Path, Age Calculator

January Lunchtime 2019 Division 1

Distances, Wanderer, Rooks, Mouse Meets Cheese

February Cook-Off 2019 Division 1

Max Range Queries, Chef and Secret Password, The Most Amazing Dish, Chef and Party

February Lunchtime 2019 Division 1

Roll the Bar, Families of Chefland, Create Permutation, The Tricky Deal, Chef Challenge

March Cook-Off 2019 Division 1

XOR N-bonacci Sequence, Points and Convex Hulls, Markers and Caps, Music Shopping

March Lunchtime 2019 Division 1

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

April Cook-Off 2019 Division 1

Doubly Increasing Path, Random Game, Pied Piper vs Hooli, Mystery Tree, Guess My Age

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, XOR Magic, Abdullah and Toll Discounts

June Lunchtime 2019 Division 1

Fuzzy Conversions, The Grux Permutation , Gii and His Club, Igzi and Burly Array, Ivan Pesic and His World Tour

July Cook-Off 2019 Division 1

Birthday Gift Again, War in Treeland Again, Minimum and Maximum, Expected Product

September Mega Cook-Off 2019 Division 1

Save Jewels, Angry Grandfather, Palindromes Machine, Hiring Chefs, Fitness Exercises

October Lunchtime 2019 Division 1 (Unrated)

Counting Inversions Again!, Box Game, Kth Numbers

November Lunchtime 2019 Division 1

Planting Trees, Washing Windows, Perfection, Servers

December Cook-Off 2019 Division 1

Xor It, Crash It, The Inexplicable Giant Floating Baby Head

February Cook-Off 2020 Division 1

Must Be Divisible, Maximum Subsequence Sum, XOR Game, Sweetest Candy , Chef and Pepperoni Pizza Again

March Cook-Off 2020 Division 1

Mysterious Sequence, A Tree to Remember, Maximize Letter Beauty, Random Chocolates, Escape the Tree

April Cook-Off 2020 Division 1

Maximum GCD Subset, Tower Counting, The Gifting Problem, Simple Operations, Inversions in Permutations

January Lunchtime 2020 Division 1

Construct Array, Under the Tunnels, Folding Paper

February Lunchtime 2020 Division 1

Painter Problem, Swapping to Palindrome, Monsters Battle, Secret Mission

May Lunchtime 2020 Division 1

Absolute Min Max, Escape One, Convert the String, Tree difference

UWCOI 2020 (Rated for all)

Button Pairs, Base Plans, Find maximum in an Array, Blocks, Mercury Poisoning, Escape

July Cook-Off 2020 Division 1

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

August Cook-Off 2020 Division 1

Red-blue Trees, Polygon Relationship, Chefina and Dishes, Beautiful Subsequence

June Lunchtime 2020 Division 1

Maximum AND, Chef, Chefina and Restoration, Kuroni and the Cowsheds, Gold Mining, Square Submatrices

December Cook-Off 2020 Division 1

Mysterious Sequence, Self-Destructing Strings, Sed Passwords, Circle of Chaos, Carry All Fruits

December Lunchtime 2020 Division 1 (Unrated)

Three Letters, One Zero Swaps

January Lunchtime 2021 Division 1 (Unrated)

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

October Cook-Off 2020 Division 1

Path-etic Sums, An Inveractive Problem, The In-XOR-able Task, Yet Another Crossover Episode

November Cook-Off 2020 Division 1

Flip the String, Chef and IPC Certificates, Communication Channel, Hiring Workers

October Lunchtime 2020 Division 1

Chef Likes Good Sequences, Chef Is Just Throwing Random Words, Counting Spaghetti, Cute Chef Gift

November Lunchtime 2020 Division 1

Gasoline, Rook Path, Fractions, Circle Eating

September Cook-Off 2020 Division 1

Joined Subarrays on Tree, Balancing Game, Maximise Subsequence Value, Minimum Insertions

September Lunchtime 2020 Division 1

Root the Tree, Robot Detector

UWCOI 2021 (Rated for all)

Organisation, City Mapping 2, Array Swaps, Efficient Delivery, Hidden Numbers, Binary Puzzle

March Cook-Off 2021 Division 1

Consecutive Deletions, Water Transfer, Sort String, Chef and Sorting

February Lunchtime 2021 Division 1

Average Sorting, Sed Max, Chef and Reordering, Independent Set

April Cook-Off 2021 Division 1

Tree Distances, OR of ANDs, Valet Parking, Deletion Sort

April Lunchtime 2021 Division 1

A Special Tree, Hackerman, Intersection Matrix

May Lunchtime 2021 Division 1

Tokens On A Tree, Interactive MST, Similar Arrays, Total Components, K-Subarrays

June Cook-Off 2021 Division 1

Binary String on Steroids, Battle Royale, Polynomial Root

July Cook-Off 2021 Division 1

Beautiful Subsequence, Mod Equality, A Special Tree 2, Hidden Colored Graph, Make the Matrix Beautiful

July Lunchtime 2021 Division 1

Xor Separation, Longest Good Segment, Bad Luck

August Cook-Off 2021 Division 1

Odd Array, Different String, Chef 2 Chef, Interactive Equivalency, Clear the Array

August Lunchtime 2021 Division 1

Bunny Hops, Min-Max Path, 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

October Cook-Off 2021 Division 1

Can You Reach The End, Second Player, Find the Modulus, Chef Up, Permutation Sorting Game

October Lunchtime 2021 Division 1

Median Rearrangement, Tree Upshot, Maximum GCD

November Lunchtime 2021 Division 1

Min-Max Rotations, Permutation Pairs, Subarray Jumps

December Cook-Off 2021 Division 1

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

December Lunchtime 2021 Division 1

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

January Cook-Off 2022 Division 1

Subsegment Divisibility , Merged LIS, Boring Trip, Prime Graph, Erase All But One

January Lunchtime 2022 Division 1

Circular Permutation Recovery, Permutation XOR Sum, Permutation Deletion, Divisible Distances

February Cook-Off 2022 Division 1

Xor Becoming Uncanny, Perfect Permutation, PerMEXuation , Mango Market, Slingshot

February Lunchtime 2022 Division 1

Permutation Xor, Chef Cooks Permutation, Bracket Removal, Visit Them All, Magical Modulo, Magnet Sort

March Cook-Off 2022 Division 1

Secret Tree, Dragonado And XOR, Flippable Points, Oh I Dont Care, Alternating Divisibility

March Lunchtime 2022 Division 1

Subsequence, Mathology, Sussy Rooks, Winter, Adjacency Love, Separate Them All

April Cook-Off 2022 Division 1

Chef Goes Shopping, Sorted Distances, Sequence Cost, Max LCA Sum

April Lunchtime 2022 Division 1(Rated)

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

May Cook-Off 2022 Division 1 (Rated)

Split Powers Of 2, Different Subarrays Rearrange, Triple Inversions

May Lunchtime 2022 Division 1 (Rated)

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

July Cook-Off 2022 Division 1 (Rated)

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

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, Increase to Zero

July Lunchtime 2022 Division 1 (Rated)

Tree Interval Queries, Tree Retrieval, Binary String Happiness, Consecutive XOR, Largest Family

Total Problems Solved: 721

2773
(Div 1)
★★★★★★★
CodeChef Rating (Highest Rating 2821)
  • Inactive Global Rank
  • Inactive Country Rank

Badges

Contest Contender -  Diamond Badge

Contest Contender - Diamond Badge

Received for participating in 100 Contests

Problem Solver - Gold Badge

Problem Solver - Gold Badge

Received for solving 500 Problems

Daily Streak - Bronze Badge

Daily Streak - Bronze Badge

Received for maintaining a streak of 5 days

Recent Activity

Fetching recent activity

Workden, MNR PRIDE, 14, HAL Old Airport Rd, Domlur I Stage, 1st Stage, DOMLUR, Bengaluru, Karnataka 560071 [email protected] +91 95911 47880
Find us online

ROADMAPS

Learn Python
Learn Java
Learn C
Learn C++
Data structures and Algorithms
Competitive Programming
More Roadmaps

CAREER PATHS

React JS Developer
SQL for Data Analysis
Frontend Developer
Java Backend Developer
Data Analysis using Python
Python Backend Developer
C++ Developer

COMPILERS

HTML online compiler
C++ online compiler
C online compiler
Java online compiler
Python online compiler
SQL online compiler
JavaScript online compiler
React online compiler
More compilers

COMPANY

About us
For colleges
Coding Contests
Blogs
Contact us
Privacy Policy

© 2025 CodeChef Inc. All rights reserved.

We use cookies to improve your experience and for analytical purposes. Read our Privacy Policy and Terms to know more. You consent to our cookies if you continue to use our website.