Koichi Namekata

Practice: 

A String Game, Ciel Numbers I, Snape and Ladder, Maxim and Progressions, Number of Factors, Greedy Trip, Pairwise AND sum, Chef and The Divisibility Queries, Chef and Gift, Chef and Science, Code, Polo the Penguin and the Numbers, Polo the Penguin and the Test, Polo the Penguin and the XOR, Girl Friend and String Gift, Lucy and the Number Game, Am I a Fibonacci Number, Rank of the Number, Chef Goes Through Segments, Perfect Subarrays, Mike and Task Packages, Reign 2, Mike and Matrices , Chef and Girlfriend, Chef and Shop, Chef and String, Chef and Numbers, Chef and Way, Chef and Remissness, Chef and Kingship, Chef and Reunion, ABC-Strings, Sereja and ASum, Sereja and D, Sereja and Arrays, Chef and Digits, Dividing Stamps, Book Game with Chef, Chef and Frogs, Chef and Subarray, Divide the Cake, Ups and Downs, Tree Game, Minimum Product, Permutation Shuffle, Divisible Subset, Approximately II, Roots of a Tree, Lucky Fives, Queries on the String, Counting Flags, Knapsack Problem, Painting, Sherlock and the Grid, The Smallest Pair, Dynamic Inversion, Subarray GCD, Subarray LCM, And Operation, Shift The String, Lowest Common Ancestor, Simple Editor, Copy-Paste, Sum Queries, Friends, Chef and Array, Harrenhal, Shooting, Deja Vu, Servers, Jam, Updating Edges on Trees, Chef and easy problem 2, Chef and medium problem , Chef and medium problem 2, The Army, Walk on the Axis, And Tuples, Chef and Churu, Mahesh and his lost array, Lost Graph, Most Distant Points, Dividing the Students, Parenthesis with Maximum Sum Subarray, Xor Queries, Delivery Man, Sum Of Binomial Coefficent , Queries On Tree, Candidate walk, Just multiply, Many bananas, Random Rudreshwar, Abhijeet and rectangles, Heavy-light Decompositions, Ajinkya And Punctuality, Palindromeness, No Unpaired Chefs, House Cleaning, Chef and Chetris, Gaming Inversion, Pattern matching, Palindrome Pairs, (Challenge) Chef and Palindromes, Peaks, LCP Maximization, Travelling in a tree, Find The Point, Closest points queries, Hasan and boring classes, Chef and Isomorphic Array, Tree Connectivity, Adjacent leaves, Queries with GCD, Darts, Make a String, MEX and Ranges, Walk on Tree, Biladerim Icin, Perfect Power Divisors, Chef and Secret Recipe, The Gifting Problem, Curious Queries, GCD of the Submasks

November Cook-Off 2014: 

Brackets, Petersen Graph

September Challenge 2014: 

Factorisation, Chef and Rainbow Array - 2, Chef and Left-Right, Chef and sequence, Fun with Rotation

October Challenge 2014: 

Remy paints the fence, Chef and Ground, Chef and Painting, Chef and Square, Magical Girl and Colored Liquid Potions, DevuLand, Dinosaurs and Laddus

November Challenge 2014: 

Chef and Segment Game, Chef and Words, Fombinatorial, Sereja and Permutations, Distinct Characters Subsequence, Chef and Red Black Tree, Let us construct palindrome, The Spelling Problem

December Challenge 2014: 

Chef Under Pressure, Alok-nath and His Sanskars, Chef and Bracket-Pairs, Kali and Devtas, XOR with Subset, Chef and Apple Trees, Sereja and GCD

September Lunchtime 2014: 

Chef and easy problem

October Lunchtime 2014: 

Tanu and Head-bob, Physics Class, Cascading Style Sheets

November Lunchtime 2014: 

A wolf, a sheep and cabbage

TechFest 2015, Portal round: 

Marks Discrepency, Cube Modulo, Avoiding Cameras, Spider Infiltration, Spiderman and Jumping, Help Chandan Count Triplets, Racing Competition

Codewars 2014: 

CHESS MASTER, APP DEVELOPER DILEMMA, CODERS RANKING, MUTANT DESTRUCTION, EXPECTED VALUE, MUSICAL PROBLEM

CodeMasters 2014: 

Pizza

Code Smart 2014: 

The Chef and the Books, The Chef and the field, The Chef and the Triangles, Count of Maximum

Matrix 2014: 

Tom and Jerry, Jerry and Fibonacci, Stick Game, Arithmetic puzzle

January Challenge 2015: 

Sereja and Number Division 2, Chef and A Large Permutation, Chef and Stones, Sereja and Votes, One Dimensional Kingdoms, Gcd Queries

DPS Dwarka INOI practice contest 01: 

Chef and Fibonacci, Chef and confusing road, Chef and moon, Chef and array, Chef and mountains, Chef and powers of 2

January Lunchtime 2015: 

Piece of cake

February Challenge 2015: 

Chef and Chain, Time to Study Graphs with Chef, Chef and Strange Formula, Chef and Complex String Coverage, Chef and Strings, Let us play with rank list, Jigsaw Puzzle Solving, Chef and Equality

March Challenge 2015: 

Count Substrings, Chef and Notebooks, Chef and Problems, Sereja and Random Array, Devu and his Class, Sign Wave, Matrix

April Challenge 2015: 

Count Sequences, Chef and Interview, Broken Telephone, Inversion sorting, Division of Lands, Chef and Piano Scales

May Challenge 2015: 

Devu and binary String, Chef and Prime Divisors, Set Difference , Chef and new recipe

June Challenge 2015: 

Sereja and Matrix Division, Steady tables, Chef and His Friend, Chef and Memory Limit, Chef and Polygons, Anticommutative implication, Chef and String

July Challenge 2015: 

Addition and Multiplication, Maximum Difference Walk, Bread, MasterChef, Na2a and lucky stone, Chef and Cube

August Challenge 2015: 

Way Out, Social Cluster, Gravity Guy, Devu And Churu , Cooking Machine, Aditi and Magic Trick, Chef and insomnia, Chef and Path

September Challenge 2015: 

Filling the maze, Chain of Doughnuts, Nikitosh and xor, Count Steps in Matrix, Terrible vectors, Bank robbery, Lighthouses, Cracking the Code, Chef and Chetris

October Challenge 2015: 

Time measure, Count Subarrays, Who dares to be a millionaire, Spheres, Cyclic shifts in permutation, Rupsa and Equilateral Triangle, LCM equation, Jump mission, Efficient Delivery

July Cook-Off 2015: 

Cops and the Thief Devu, Maximize Disjoint Pair Sum, Adding Special Sum

August Cook-Off 2015: 

Chef and the XORed Number , Chef and the Wildcard Matching

September Mega Cook-Off 2015: 

Forgotten Language, Super Numbers, Stacks

November Cook-Off 2015: 

Sereja and Line, Sereja and Array and Subtracting, Sereja and Pairs, Sereja and Tree 2

February Lunchtime 2015: 

Lucky Four

March Lunchtime 2015: 

Saving a gift of love, Painting the Boxes, Chef Anup

April Lunchtime 2015: 

Tickets

May Lunchtime 2015: 

Devu and Grapes, Devu and Manhattan Distance

June Lunchtime 2015: 

Chef and Submatrix, Chef and Two Strings, Chef and Sets

August Lunchtime 2015: 

Churu and lost string, Make Palindrome, Minimum Maximum

September Lunchtime 2015: 

Coffee Breaks, Sum of palindromic numbers

October Lunchtime 2015: 

emitL, Save the nature, Fast squarer, Estimating progress

November Lunchtime 2015: 

Query over Matrix, Black And White Cells, Product on Tree

December Lunchtime 2015: 

Computer Network, Ancient Berland Roads, Distinct Codes

CodeVaitam: 

Easy Mathematics , Strings vs Integers, Story of Berland, Kisses, Robin and Gold coins, Unlucky Gambler, Chef and Daughter

CodeSurf 2015: 

Lights and Switches, Interstellar and Stellar Distances, Prime and its multiples, Save the Attendance, Fill The Bags

Code Brunch: 

Parking Slot, Byteland fund raiser, N-Prime-Divisors, Visit the cities, Piyush and Bitwise-operation, Rising population

Code Currents 2015: 

Anayat And His Girl Friend, Sadiq On a Date, Jimmy is Late, Jimmy and NITT WiFi

JNTUV Warmup 2015: 

Nth Number in the series, Addition, Factorial, Pair of Numbers

Prayaas 2015: 

Tired Knights, Sam and Sequences, Despicable Me

CodeTrenders 2015: 

Reduce Time , Viva Round

February Farewell 2015: 

Network Management

Pseudo Code: 

Guessers and Thinkers, Chef and New Dish, Chef and His Secret, Bada Churri and Strings, Paradigm Messenger

January Long Challenge 2016: 

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

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

March Lunchtime 2016: 

Two Closest, Arrays Sum, Simple Statistics

April Lunchtime 2016: 

Maximum K Sums, Coins And Triangle

June Lunchtime 2016: 

Collisions, One more weird game, Square in numbers, Travelling in a tree

July Lunchtime 2016: 

Drumpf for President!, Lumpy - The Bus Driver

August Lunchtime 2016: 

Studying Alphabet, Lock-Free Stack

September Lunchtime 2016: 

Chef and Inequality, Chef and Tree

October Lunchtime 2016: 

FastFood Combos, The Largest Bouquet

November Lunchtime 2016: 

Chef and his Students, Chef and Square Set, Tom & Jerry

December Lunchtime 2016: 

Superheroes and villains, Fly height mode

Codeathon: 

The Revolutionary War, RCGs

February Lunchtime 2017: 

Bear and House Queries, Bear and Milky Cookies, Bear and Bribing Tree, Bear and Oveflow Points

September Cook-Off 2017: 

Infinite OR Game, Statistics Construction, Subsequence Equality

December Cook-Off 2017: 

Minimum SubArray, Beautiful Array, Football Match

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

May Lunchtime 2017: 

Prefix Inversions, Post Tree, SubInversing

June Lunchtime 2017: 

Maximum Unique Segment, Two Numbers, Company and Club Hierarchies

July Lunchtime 2017: 

Find the Maximum Value, Good Pairs, Travel to all Points, Divide the Set

August Lunchtime 2017: 

Mathison and the Dynamo shuffle, Mathison and pangrams

September Lunchtime 2017: 

Chef and Dice, Chef and Cook-Off Contests, Chef and Programming Contest by His Friend

October Lunchtime 2017: 

Buggy Calculator, Maximum Number

November Lunchtime 2017: 

Smart Strategy, Shuffling, L-R queries, Strange Queries

December Lunchtime 2017: 

Days in Month, Strange Function, Too Much Sweetness, Four Friends

January Challenge 2018: 

(Challenge) Chef and Palindromes, Killing Monsters, A humongous Query, Simplify the Square Root, Killjee and k-th letter , K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers

January Lunchtime 2018: 

Chef and Game with Sequence, Chef and Average on a Tree, Chef and Function, Chef and Escaping from the Labyrinth

February Challenge 2018: 

Broken Clock, Chef And Land Labeling, Chef And His Characters, Chef And The Patents, Chef and odd queries, Points Inside A Polygon, Car-pal Tunnel, Permutation and Palindrome

Code Currents: 

Problem 2, Problem 3, Problem 4

February Lunchtime 2018: 

Prefix borders, Game with numbers, Jumping in the hills

December Cook-Off 2018 Division 1: 

Count Subsequences, Swag Subsets, Yalalovichik Numbers, Yalalovichik Strings

March Lunchtime 2018 Division 1 (Unrated): 

Partitions, Three Integers, Magic Elements

April Lunchtime 2018 Division 1: 

The hardest gcd problem, Triple-tree decomposition, Solve what you want, Fast forward travelling, Darts

May Lunchtime 2018 Division 1: 

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

April Challenge 2018 Division 1: 

Cutting Plants, Highway Crossing, Count Good Prefixes

May Challenge 2018 Division 1: 

S-T Mincut, Change the Signs, Edges in Spanning Trees, Fake Binary Search, Dibs on Fibs

July Lunchtime 2018 Division 1: 

Forced Particles, GCD Sum, Prime divisors

August Lunchtime 2018 Division 1: 

Chef and Eid, Mix Mix Game, X and Two Groups, GukiZ Has More Candies

September Lunchtime 2018 Division 1: 

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

October Lunchtime 2018 Division 1: 

Coloring the Grid, Weird Question

December Lunchtime 2018 Division 1: 

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

January Challenge 2019 Division 1: 

Yet Another Problem About Sequences, Different Neighbours, Distinct Pairs, Party

April Challenge 2020 Division 1: 

Factor Tree

May Cook-Off 2020 Division 1: 

Chef, Chefina and Their Friendship, Chefland Squads and the Army Chief, Chefina on a Trip, Roads in Chefland

February Lunchtime 2020 Division 1: 

Coronavirus, Swapping to Palindrome, Monsters Battle, Secret Mission

March Lunchtime 2020 Division 1 (Unrated): 

Maximize LCM, Strip in a Tree!, Nested Rotation

April Lunchtime 2020 Division 1: 

Dot Time, Xor Jar Muluk Tar, Another Birthday Present!, Positive Mex

May Lunchtime 2020 Division 1: 

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

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Problems Tested (0)

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