vjudge13

Practice: 

Prime Generator, Transform the Expression, The Next Palindrome, Factorial, Small factorials, Play on Words, Marbles, Cutting off Squares, Highways, Ordering the Soldiers, Bytelandian gold coins, Ambiguous Permutations, Enormous Input Test, Longest Common Subsequence, Sums in a Triangle, The Cursed Room, Turbo Sort, GCD2, ATM, The Rise and Fall of Power, Some More Homework, Packing the Boxes, A Christmas Pizza Puzzle, Johnny and the Beanstalk, Paying up, SudokuX, The Guessing Game, Battleship V, Life, the Universe, and Everything, A Very Easy Problem!, Squash the Bugs, Paying up, The Lucky Draw, The battlefield, Magic sequence, Quadratic Equations, Curry Stained Napkin, Nuclear Reactors, A Coin Game, Crystals, Sum of numbers, The Lead Game, Discrepancies in the Voters List, The LCS Problem Revisited, Palindromic Numbers, Plant Location, Stone Game, Anagram, Palindromic Subsequences, Treasure Hunting, Travelling Salesman Again !, Graph Counting, Array Transform, Rendezvous, The Black and White Knights, Yet Another Number Game, Flipping Coins, Maximal crosses, Squirrel and chestnut, Gravel, Reduce string, Head office building, Adding Least Common Multiples, Ripple-Carry Adder, Count palindromes, Fetching Cooking Tools, Arranging the Appetizers, Cleaning Up, A Simple Equation, Decreasing String, Product of Digits, The Perfect Chocolate Candy, Cooling Pies, K-Unique Sequence, A String Game, Choosing Cook Off Problems, N Knights Problem, One Dimensional Game of Life, Dinner Party Socializing, Cutting Recipes, Newspaper Puzzle, The Morning Commute, Pairing Chefs, Seeding The Pattern, Chef attic window, Milestones, Whole submatrix, Integer Sequences, Three Way Communications, Dance Floor Energy, Cutting Rods, Exponentiation Commutativity, Palindrome Palindrome, Rectangles Counting, The Great Wall of Byteland, Cipher Text, Parade, Bickering Cooks, A Prime Conjecture, Most Popular Friend, Infinite Grid Game, Longest Weird Subsequence, Open the Dragon Scroll, Repeated String, New Restaurant, Pattern, Sum of Factors, CricInfo, Subanagrams, Lucky Number, Houses and Restaurants, Ciel and A-B Problem, Dynamic GCD, Favourite Numbers, Flight Distance, Home Delivery, Count of Maximum, Spoon in Matrix, Fit to Play, Change of base, Is it a tree, Double Strings, Find a special connected block, Little Elephant and Strings, Stacking Pancakes, Strange Punishment, Connected Components, String encryption, Little Elephant and Candies, Little Elephant and Movies, Top Batsmen, Remember the recipe, Lights, PRIME, Little Elephant and Cards, Little Elephant and Exams, Kisses & Hugs, Little Elephant and Bombs, My Fair Coins, Gift Rift, Arranging Cup-cakes, Event Organizer, Music & Lyrics, Connecting Soldiers, Matchsticks, Delivery Boy, Racing Horses, Ciel and Receipt, Ciel and Tomya, Guess the Middle, Annual Parade, Code Crazy Minions, Carvans, Buy1-Get1, Book Exercises, N Queens, Little Elephant and Permutations, Sridhar Likes Travelling, Buying Sweets, Equalization, Rat Maze, Arithmetic Progressions, Pizza Delivery, Parking Woes, Presti Digitator, Expected Greatest Common Divisor, Packaging Cupcakes, Chef of the Year, Climbing Stairs, Count the Words, Vacation, Observing the Tree, Queries on tree again!, Making Change, Three Different Numbers, King of the Ring, Cipher, Physics, Level Of Difference, Prime or not, Fire Escape Routes, Lack of Logic, Row and Column Operations, Helping Lira, Another Factorial Problem, ZooZooland Water Shortage, Your Name is Mine, Field Trip, Andrew and the Meatballs, Dessert Wizard, The Number Of Solutions, SORT, Lapindromes, Cool Guys, XOR Sum, Subtraction Game 1, Chef and Segments, Chopsticks, Very Long Suffix Array, Maxim and Dividers, Sereja and Game, Count K-Primes, Attic Crossing, Sereja and Transformation, Prime Distance On Tree, Elephant, Chef and Integers , Gangsters of Treeland, Splitting Candies, Entangled Strings, Yet Another Nice Girl, Chef and The Colored Grid, Chef and The Right Triangles, Chef and The Divisibility Queries, Counting D-sets, Code, Big Number, Game Of Thrones, Polo the Penguin and the XOR, Uncle Johny, Chefs in Queue, ForbiddenSum, ATM, Number Mirror, Am I a Fibonacci Number, Lowest Sum, Trees and Subtrees, Lucy and Question Marks, Magic Pairs, Rectangular Queries, Chef Goes Through Segments, Mike and Task Packages, Please like me, Chef and Girlfriend, Chef and Feedback, Olympic Village, Longest Common Pattern, Little Elephant and Subarrays, Farmer Feb, Chef and the Orders, Chef and Shop, Chef and String, Chef and Numbers, Compilers and parsers, Walk, Mike and Stamps, Atoms in the Lab, Counting Bits, Sherlock and Inversions, Chef and Remissness, Chef and Kingship, Chef and Reunion, ABC-Strings, 3-Palindromes, Sereja and D, Sereja and Arrays, Easy Tiling, Really Easy Tiling, Chef-jumping, Little Elephant and T-Shirts, Dividing Stamps, Divide the Tangerine, Substrings and Repetitions, Make It Zero 3, Chef and Frogs, Chef and Digit Jumps, Pipes, Chef and Rainbow Array - 2, Chef and Subarray, Shortest Path in Binary Trees, Chef and Left-Right, Chef and Square, Ups and Downs, Stone, Count Substrings, Count Sequences, Knight Fork, Count Substrings, Guessing Game, Reach The Point, Dish Owner, Divisible Subset, Addition and Multiplication, Rectangles, Game of Numbers, Queries on the String, Knapsack Problem, Sherlock and the Grid, Substring Query, Coprime Triples, The Smallest Pair, Subarray GCD, Subarray LCM, Push the Flow!, Earthquake, And Operation, Shift The String, Lowest Common Ancestor, Rectangle Query, Copy-Paste, Sum Queries, Chef and Gift, Friends, Chef and Array, Fun with Rotation, Chef and Strange Formula, World War 2, Tanu and Head-bob, Convert the Expression, Sereja and Permutations, Magical Girl and Colored Liquid Potions, Updating Edges on Trees, Chef and medium problem , Solving the Practice Contest, Distinct Characters Subsequence, Chef and Red Black Tree, Chef and Notebooks, Walk on the Axis, Devu and Adding Two Numbers, The Problem Set, Launch Tower, Let us construct palindrome, Chef and Churu, Course Selection, Ground Stations, Mangalyaan-2, Sereja and Salesman, Three elements, Cascading Style Sheets, Discount on crackers, Jai Hanuman, Covering Sets, Brackets, Chef and Keyboard, Chef and Problems, Zombinatorial, Parenthesis with Maximum Sum Subarray, Tom and Jerry, Charlie and Prime Numbers, Billiards, Sereja and Votes, One Dimensional Kingdoms, Xor Queries, Delivery Man, String Matching, Random Number Generator, Drawing Contest, Sequence Containment, Interview Scheduling, Good Joke!, Pilgrimage, Fit Squares in Triangle, Matryoshka Dolls, Jersey Number, Opening Pair, Gabba sprint, Gcd Queries, Countdown, Suraj goes shopping, Anup at Amrithapuri, Equilibrium number, Not Palindrome, Chef and Interview, Cricket Tournament, Message Typing, Lucky Four, Broken Telephone, Median, Matrix, Hacking the Random Generator, The Grand Budapest Hotel, The Imitation Game, Andrash and Stipendium, Chef Collects sticks, Fibonacci, Chef and Prime Divisors, Little Party, Set Difference , Black-white Board Game, ATM, Saving a gift of love, REVERSE, Equality, Version Control System, How to Repaint a Fence, Tickets, 3D Queries, Counting on a directed graph, Laboratories, Accommodating tribal clans, Gravity Guy, Unlock Secrets or Leonardo, Chef and String, A New Scheme, Find Most Repeated Character, Find Missing Number, Chef and Cube, Kazi And The Contest, Rohith and Circles, Add Two Numbers, Find Remainder, First and Last Digit, Smallest Numbers of Notes, Reverse The Number, Helping Chef, Total Expenses, Id and Ship, Gross Salary, Valid Triangles, Grade The Steel, Gregorian Calendar, Ingredients, GCD and LCM, Second Largest, Small Factorial, Primality Test, Finding Square Roots, The Block Game, Farmer And His Plot, Wrong Answer, Chain of Doughnuts, Chef and Dolls, Chef and his Sequence, Merge Sort, Nikitosh and xor, Devu and friendship testing, Make XOR zero, Dining, Cops and the Thief Devu, Maximize Disjoint Pair Sum, Path containing K Nodes, Chef and Table Tennis, Count Subarrays, Chef and Bitwise OR Operation, Chef and Two Strings, Greedy puppy, Puppy and game, Race Time!, Dividing Machine, Chef And The Hiring Event, Chef and Path, Chef and Segments, Code Land, Chef and Rectangle Array, Forgotten Language, Chef and the stones, Chef and the Dual Palindromes, Chef and the XORed Number , Chef and the Wildcard Matching, Capital Movement, Make Palindrome, Minimum Maximum, Maximum sub-array, Pattern matching, Misha and Gym, Sum of palindromic numbers, The Gift Of Raksha Bandhan, EASY SORTING, Chef And Operators, Cyclist Race, Plane Division, Chef and cakes, Period on tree, Decompose the Tree, Counting Zigzag Sequences, Max Subarray GCD, Mahasena, Poker Chips, Bhallaladeva, Just Update and Print the array, Chef-Detective, (Challenge) Chef and Palindromes, Processing a string, Chef and Array and K, Chef and Tetris, Mutated Minions, Ancient Berland Roads, Trip and Palindromes, Chef and Destruction, Matched Brackets, Wormholes, Chewing, Video Game, Distinct Codes, Palindromic substrings, Sereja and Array and Subtracting, Bob and BST Permutations, Chef and Cycled Cycles, Magical Strings, The Christmas Gift, Jalebi Bai and Decks of Sweets, Chef and Pick Digit, The making of a cake, Samosa Bhai and his Courier Company, Chef and Subarrays, Chef and Queries, The Revenge of Jalebi Bai, Save The Trees, Product of two numbers, Longest Common Subsequence, Chef And Binary Operation, Bubble Swap Count, Chef and Fruits, Help Watson Escape, pairs, Fibonacci Queries, Gaint and Sifat, Traffic Count, Malvika conducts a Programming Camp, Malvika is peculiar about color of balloons, Animesh has a war with tribal leader Malvika, Malvika conducts her own ACM-ICPC contest series, Animesh decides to settle down, Crazy Malvika discovers Crazy Fibonacci function, The Return of Palindrome, Chef and digits of a number, Not even planar, Digital clock, Dual Nim, Learn Segment Tree, Strange Functions, Alternating subarray prefix, Divisibility test, Simple Search, Faded Palindromes, Chef and Tic-Tac-Toe, Chef and math, Fullmetal Alchemist, Chef and Three Dogs, Puppy and Sum, Chef and Ballons, Chef and cities, Rain Water trapping, The Inversions, Forest Gathering, Two Closest, Simple Statistics, Get AC in one go, Pankaj and Icecream, Ada and crayons, The potato problem, Beautiful Function, Simple Sum, Fire and Ice, Chef And Magical Path, Dragon Warrior, Fear of Rectangles, Golu and url shortner , Cab Service, Agent Chef, Chef And Coloring, Maximum K Sums, Help with selection, Summer Internship, Probability, Movie Weekend, Polygon, The Vowel Phenomenon, The Bracket Problem, Cats and Dogs, Laddu, BookWorm, Coins And Triangle, Akhil And Colored Balls, Chef and special numbers, Tandem, Devu and an Array, Evaluate the polynomial, Floor Division Game, Sticks, Right Triangle, Chef and Robots Competition, Chef and Sad Pairs, Sharing Candies, N different palindromes, Different Neighbours, Chefland and Electricity, Best Maximum Product, Range Minimum Queries , Chef and Numbers, Chef and squares, Pattern Craft, Chef and calculation, Drumpf for President!, Lumpy - The Bus Driver, If - Else Problem, Studying Alphabet, Lock-Free Stack, Pascal Triangle, Sorting Tool, Take Turns, Kth Max Subarray, JARVIS and LCP , Mahasena , Lazy Jem, Counting Strings, Zack And The Handkerchieves, Diagon Alley, Torque and edges, Coldplay Concert, Batman v Superman, Find The Digits, Batman Vs Joker, Time Conversion, Prime Numbers, Sherlock and the Ugly Flower, Watson asks Does Permutation Exist, Luther and Brackets, Tree Balancing, Longest Increasing Subsequence, ChefWatson uses Social Network, A walk on a grid, Largest HourGlass, Help Lost Robot!, Colorful Grids, Robolympic Batons, Counting Lights, Query On Strings, The Counties, Download file, To add or to multiply game, Rangoli pattern, Placing Rook, Run Length, Kirito in labyrinth, Subway Lines, Sebi and the highway, Proper Divisors, Test the Year, Fibonacci, Remove Duplicates, Tree Height, Maximum Xor Query, Choosing Problems, Chef and his Students, Parhi And Multiplication, Chef and Subarrays, Chef and Queries, Path by a Castle, Coal mines of Kharagpur, Optimal Partition, Coal Mafia and Toll Tax, Bus Routes, Cookie Flavors, Netcoin Verification, Mancunian Hoards Black Money, Bob vs ATM, Extreme Encoding, Men and Horses, Optimal use of Nuclear Power plant , Mr Wireless, Forming Teams Again, Maximizing Minimum Distance, WiFi Expenses, Reservior, Sealing up, Gajju Bhai is hungry, Nothing in Common, Game of Friends, Digit Longest Increasing Subsequences 2, Sum of distances, Cisco and Magical array, Cooking Game, Transpose Matrix, Bear and Extra Number, Bear and Milky Cookies, Chef and Divisor Tree, Bear and Cat Trap, (CH) Bear and Sorted Rows, Bandwidth of a matrix, Number Tower, Square of a Number, Maximum of Three Numbers, Second Max of Three Numbers, Chef and Array Update, Easy One-Electricity Bill, Increasing Xor Sequence, Golu and Sweetness, Laura and her QUERIES On Tree, Long Sandwich , Logan and DIGIT IMMUNE numbers, Bear and Ladder, Pishty and tree, Bear and Row 01, Bear and Clique Distances, Rhett and Link, Bear and Shop Trip, Bear and Candies 123, Factorial Problem, Raman and The Bucket Challenge, Mayank and Line Segments, Minimizing the dot product, Bear and Segments, Bear and Segment 01, Chef and his daily routine, Courses in an university, Chef and Subsequences, A Good Set, Triplets, Snake Procession, Protecting The Poison, Chef got Recipes, Temple Land, Prefix Inversions, A temple of Snakes, Knight Covering, Snakes and transition from Capitalism to Socialism, Robots in a DAG, Pairwise union of sets, Minimax, Two Numbers, Chang and Bitwise OR, Chang and the Perfect Function, Chef and Isomorphic Array, Whats in the Name, Calculator , IPC Trainers, Find the Maximum Value, Good Pairs, Travel to all Points, Palindromic Game, Fill The Matrix, From heaven to earth, Product on the segment by modulo , Mathison and pangrams, Max Mex, Weird Competition, Queens Landing, Little Chef and Sums, Chef Hates Palindromes, Fast Exponentiation, Numbers Game, A Balanced Contest, Coordinate Compression , Chef and Cook-Off Contests, (Challenge) Connecting computers, Disease, Modular GCD, Chef and Subarray Queries, Chef and Employment Test, Buggy Calculator, Minimum SubArray, Modulo Equality, Obtain Desired Standard Deviation, Ordering teams, Villages and Tribes, A tale of two trees, Days in Month, Strange Function, Killing Monsters, J - Reached Safely Or Not, E - Password Riddle, Fibonacci Series, Prime Factorisation, Bridge Crossing, A - Appearance Count, Skiing, Online Chess, Random Pair, I - Secrets, D - Triangle Count, Vertex Cover, Chef And Easy Xor Queries, Area of an amazing figure, Four Friends, Chess knight move, Chef And Land Labeling, Good and Bad Persons, Uniform Strings, Pishty and Triangles, Quadratic Functions, Beautiful Array, Large Sum, Magic Board, Nested Candy Boxes, Crypto Trading, A Few Laughing Men, Coder Life Matters, Chef and Interval Painting, Chef Cuts Tree, Rectangle, String Merging, Hello World, Polite Number Generation, Multiple of 3, Smallest To Square, Multiply the Array, Geometric Progression Triplet, Make array great again, Finding the matrix, Max Subarray (keteki), Chef And His Characters, Chef And The Patents, Survive in ChocoLand, 4 Cycle, N-QUEENS, Campus Drive, Celebrity In Trouble, Save Patient, Mighty Friend, Chef and Easy Problem, Car-pal Tunnel, Cutting Plants, A Big Sale, Permutation and Palindrome, Chef and Cook-Off, Chef and Tuples, Chef and Line, LOL QUERIES ON A TREE, CAPTAIN M & ARMY, Smaller than the element, Prefix borders, Game with numbers, Jumping in the hills, Electron Base, Mix the Colors, Chef and Glove, Series Sum, Minions and Voting, Spiral Matrix, Help Voldemort, Wingardium Leviosa, Z Value, Chef Judges a Competition, Mussadi lal and stairs, Chef and Friends, Magic Elements, Count Good Prefixes, Workers, Xor Again, Good-Bad Pair, The Deadly Sin, Candy Love, Reverse String, Chef and Same Old Recurrence 2, Convergence, vyrevy-array, Cut the Board, Binary Nim, Two vs Ten, Fast forward travelling, The Last Digit, Rubber Band, Dibs on Fibs, Best Cake Ever, Archi and Tree, Naive Chef, Trace of Matrix, Weak in the Middle, Xor Table, Maximum Plus, Code Stats, Family Tree, Sum OR Difference, Decrement OR Increment, Area OR Perimeter, HOW MANY DIGITS DO I HAVE, Program Your Own CALCULATOR, Is it a VOWEL or CONSONANT, Prime Numbers, Archi and Comparsion, CyclesAndColorings, Sort the Leaves, Summary Power, Counting Pretty Numbers, Reach Equilibrium, Tree Query, Gears, Big Multiplication, Encoding Message, OR Matrix, Chef and Recipes, Chef and Bored Games, Sheokand and Number, Spell Bob, Books And Pages, The Array Problem, The Great Run, Good Speech, GukiZ and Candies, Mixi Game, Magician versus Chef, Dean and Sam, Find the prefix sum, Balsa For The Three, War of XORs, Chef and Eid, Mix Mix Game, Chef and Adventures, Ada School, Leap year, TomorrowLand, Bad Shuffle, Appy and Balloons , The Alien, Chef and Serves, OneTwo, Learning Dishes, ATM Machine, Rat in the maze, Chef and Ridges, Judging Delay, Chef Restaurant , Match the Streams, Grid Game, Qualifying to Pre-Elimination, Chef and Operations, Chef and SnackDown, Chef and Semi-Primes, Ada King, Graph on an Array, Ada and the Staircase, Pumping Water, Chef and Typing, A Game of Robots, Reduction Game, Word Grid, Three Friends, Robots Again, Chef and Sequence, Chef and Difficult Contests, Spectacular Activity Selection, Truth and Dare, Beautiful Garland, Colorblind Feast, Antimatching, Useful Number, Chef and Interactive Contests, Adi and the Tree, Maximise the Sum, Lucky Number Game, E - Make it Zero, Count Periodic Numbers, Play Piano, 1-2 Game, Pseudo Sorting Algorithm, Life Limited, Swag Subsets, Fighting Armies, Magic School, What is the Cost of Reading, Josephus Again, Absolute Difference Sum, Bag of Tiles, Valid Stack Operations, XOR! Wait for it, Is it a Cakewalk Problem, Print Pattern, D - Balanced Parenthesis Substrings, Summation over nCr, Alohomora, Reforms, Reforms Never Change, Sauna Cred, Age Calculator, Distinct Pairs, Chef and Modulo Game, Fancy Quotes, (Challenge) Chef and Matching Game, A Pizza Slice, Philosophers Stone, Shivigawdz, Curing Kingdom, String and Graphs, Jungle Safari and the Boat, Rooks, Guess It Right, Chef and Magical Jars, Xor Decomposition, Appy and Contest, Yet Another Tree Problem, (Challenge) Chef with Orchestra in the Kitchen, Mayhem Again, Art of Balance, The Great Lane, Pattern, Zombies and Magic!, Hex Prime, Max Range Queries, IPL and RCB, Game of Chef, Buying New Tablet, The spy machine, Stock Profit, Beginner, Average Number, Chef and a Beautiful Digit, Large Factorial, Range Sum Problem, Factorisation, Hello World, Markers and Caps, Playing with Numbers, FlatLand, Too Many Candies, Maximum Remaining, Subtree Removal, Fencing, Corrupted Seven-Segment Display, Testing Robot, Game of Theory, Danny Wants To Know, Max power, No Succession, Long Long Sum, Range GCD, The Last One, Solve The Case, A Game of Primes, When to take medicine, Making a Meal, Mystery Tree, Trees and Degrees, Chef Learning Hungarian Algorithm, Chef and Good Subsequences, Reduce to One, Road Signs, Chef and Proxy, Guddu and his Mother, Guddu on a Date, Attendance, Fast Food, Chefina and Ranges, Encoding, Sum and GCD, Forgotten Tree 9, Friend in Need, Misha and Nice Sets, Bitsetbaba and Power Grid, Recover the Sequence, Dummy Palindromic Strings, Reverse Maximisation, CV, XOR Magic, Abdullah and Toll Discounts, Parity Again, Easy Fibonacci, (Challenge) SnackDown 99, Chef and Distinct Numbers, Raghu Strings, Multiple Choice Exam, Subarray, Chef and Gordon Ramsay, Eat Twice, Ping Paja Pong, Hard Sequence, Magda and Silly Pairs, Football, Distribute Apples, Birthday Gift Again, War in Treeland Again, Playing with Strings, Two Variables, Easy Math, merge sort, A - Books, B - Candy Love, Chef and Dynamo, Save Konoha, Gcd vs Lcm, Prajit and bits, Rich Substrings, Chef and Pepperoni Pizza, Infinite Increments, Chef and Interesting Subsequences , Gaithonde Leaves Aashram, PERFECT NUMBER, Plus Multiply, Bits Magic, Inversions in an array, Sugar Rush, Length and Sum of Digits, PLAY WITH MATRICES, Palindromes Machine, Phone Prices, Playing with Matches, Weird Modulo Problem , Faulty System, Chef Feeds Cats, Student of the year, Children and Candies, Weapon Value, Pen Pineapple Apple Pen, Colliding Balls, Shortest Palindromic Superstring, Beautiful Partitions, Discount in a Shop, Awkwardness Minimization, Moving Segments, Cakewalk, Medel, D-Value, Select Training Set, (Challenge) Coloring Triangulations, The Promised Land, Naruto Run, Printing Pattern using loops, Khaled in HIT, How much Scholarship, Is this the word, Odd Topic, Balanced Brackets, Chef Diet, Equality, (Challenge) Cubical Virus, Minimum Variance, That Is My Score!, Colorful Balloons, Washing Windows, Nth Fibonacci Term, Train or Walk, Maximize Diversity of an Array, Chef and Diamonds, Convolution, English, Beauty and The Array, B - Prime-partite Graph, IPL Begins, Inverse Knapsack, Inequality Reduction, Disconnecting Cities, Game on Tree, Telephone Network, Expected Area, Coloring Intervals, Safe Robots, Breaking Bricks, Change It, Usain Bolt vs Tiger, Walk 4 steps, Polygon Containment, Minion AND Range, The Evil Professor, Stupid Machine, Guess the number, Ruman and Pull Requests, Chef and String, Strange Number, Chef Chick, Maximum Subsequence Sum, Sky Watching, Bitwise Operators, Exploring Undiscovered Planets, Destroy The Asteroids, Recruit Villagers, Psertu in Byteland, Lasers Everywhere, Buying a New String, Quality Work, Construct Array, Bob and His Friends, Chef and Street Food, Island Count, Lasers Everywhere Alternative, Chefina and Swaps, Hard Cash, (Challenge) Raisins, XOR Game, Triangular Pyramid, Lavanya Loves DFA, Prefix sum, 1 - Nights Watch, Check Prime, Is This JEE, Penalty Shoot-Out II, Tax Slabs, NEXT GREATER ELEMENT, Valentines Day, Euler Totient Function, Chef and Tiling, Moony and ICPC team,  A - Tom & mouse traps , Love at first sight, Blocks, Chef and Stocks, Binary Land, Formula 1, At the Gates, Not All Flavours, Unit GCD, Sorting Vases, Find Your Gift, Box of Chocolates, Maximize Letter Beauty, Paleontology Museum, IS IT DSU HARD!!, Cool Subsets, Coronavirus Spread, Sell All the Cars, Naruto and Rectangles, Chef and Squares, Chef and Bitwise Product, Lazy Carter, Harry and chocolates, Lift Requests, Missing a Point, Snacks, Balls, Find Number From Factorial, Chef learns Statistics, Maximum AND, Naruto and Chunin Exams, Greedy DD, Triangle Query, Another Birthday Present!, GCD OF TWO NUMBERS, Chef and Numbers, Isolation Centers, Chef in Fantasy League, Creating New Mathematical Tasks, Q Trailing Zeros, COMP4204 Lecture, Minimum Spanning Tree, Chef and Recipe, Chefland Squads and the Army Chief, Roads in Chefland, Subsequence Frequency Counting, Laxman and Maths, Bharat and Possibilities, The Tom and Jerry Game!, Lord Ram and XorOrXorOr Power, The Delicious Cake, Play with 2D Array, Quick Sort, Doctor Chef, Weird Algorithm, Chef and Icecream, Chef and String, Weird Walk, Lost Weekends, New Algorithm, Unique Strings, Chef and Price Control, Minimum Cards, Cache Hits, A Problem on Sticks, Max Mex, Checkpoints, Chef vs Doof, Doof on Cartesian, Distribute Candies, Doof fires Brackets, Pyramid of string, Increasing Decreasing, Chef and Card Game, MEX-ception, The In-XOR-able Task, Even-tual Reduction, OR-thodox Distinction, I Hate Symbo-LIS-m, Unique Substring, Cherry and Bits, Priya and AND, Chefina and Strange Tree, Chef and Modular Sequence, Chef and Steps, Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess, Binary Concatenation , Smallest KMP, Linked List, Game on a Strip, Chef and Wedding Arrangements, 2 - Sums divisible by 3, 3 - Domino game, Quest for Dragon Balls, Red-blue Trees, Polygon Relationship, Chef and Work, Beautiful Subsequence, Ada Matrix, Mode of Frequencies, Alien Invasion , Maximise Subsequence Value, GCD operations, Root the Tree, Zenny and Simple Sum, Majority Element, Word Collection, Random Knapsack, Compress all Subsegments, Restore Sequence, Covid Run, Chef and Easy Queries, 2D Array, Musical Chairs, Decreasing Srrnmieeda, Path-etic Sums, Ada and Dishes, Sum Of Array Elements, Yet Another Crossover Episode, Factors and Function, Min and Max, AND Plus OR, Better call Saul!, Los Pollos Hermanos, Empire Business , Chef and Subtree MEXs, Red-Black Boolean Expression, Chef Is Just Throwing Random Words, Team, Hunting Race, Tree and unwanted leaves, Segment Tree, Multi-threading Merge Sort, Area of Largest Rectangle, Frog Sort, Frequency Array, Birthday of Anabelle, Compartment Weights, Print Sub-Array, Flip the String, Set Queries, CHEF GOES FOR A DATE, Even Vs Odd, Chefland The Great City, Armstrong Number, Gasoline Introduction, Gasoline, Interesting XOR!, Polite numbers, Square Root of LCA Convolution, CHEF AND LOTTERY, Even Pair Sum, Vaccine Distribution, Self-Destructing Strings, Organisation, Sed Passwords, Array Swaps, Hidden Numbers, Willows Sort, Catch the Thief, Circle of Chaos, Angry Cyborg, Binary Puzzle, Parallel Universe, Status and Updates, Fair Elections, Minimum Attendance Requirement, 8 Use Priority Queue Please, Find Steps, Sed Sequences, One Zero Swaps, And-Or Game, Maximum Value, Valid Paths, Bodybuilder, Chef and Division 3, Dinosaur Destruction, Encoded String, Cleaning Drive, Palindrome, Daanish and Problems, Chef and Groups, Chef and Divisors, Not Too Colourful, Maximum Size, Minimum Steps, Find Second Largest, Maximum Money, Coin Game, Find Next, College Life 2, College Life 5, Password, Maximise Function, Special Fibonacci, Solve This, Sale of Watches, Minimum operations, Power of 2, Chef needs Help, Chef and Tourism, Chefina and Candies, Chef’s Number Puzzle, Pair Me, Even Differences, 1 - Binary Distance, pattern11, Lockdown, Metrology Station, String, Highest Divisor, Hand Shakes, Welcome to the world of CP, Hello, CodeChef!, Body Mass Index, Substring Probability, Space Arrays, Absolute Difference, Server Trouble, Consecutive Deletions, Palpal Strings, Smallest Possible Whole Number, Coprime Range, Chef and Coupon, Maximum Topological Sort, Worthy Matrix, Odd Array, No Time to Wait, MaxEdges, Water Transfer, Digitone, Total Correct Submissions, Turn It, Nobel Prize, Motivation, Pawri Meme, Chef and Sorting, More Friends, Weight Balance, Guess the Number, Lucky Four, Smart Phone, Suffix Sort, Possible Victory, Make the Sum Even, Birthday Gifts, Uniform, Lunchtime, Valid Pair, World Record, Strong Language, Boolean Game, Passing Marks, Chef On Island, Chef in Heaven , Hiring Test, Bench Press, Lucky String, STRING MANIPULATION, B - Valentine Couples, Tree Distances, OR of ANDs, A - Save Water Save Life, Joker and Batman, Deletion Sort, Pizza Party, Equinox Strings, Array Rotation, Special Triplets, Charges, Shortest Route, Magical Coins, Minimum Sum, Coldplay, Hoop Jump, Modular Equation, Permutation Swaps, Golf, Solubility, Covid Analyzer, Unlock it, Rough Paper, Indexing, Beautiful Ranges, Step or Jump, Bitwise Tuples, Tom And Jerry 1, Make it zero, Bella ciao, False Number, Lazy Chef, Chef and Subarrays, Aptitude,  XOR maximum-minimum matrices, The sequence of 2s and 7s, Avinash The Mafia, K-Subarrays, Summer Heat, Optimal Xor Set, Minimum Subtree Cover, ICPC Balloons, Chefland Visa, Richie Rich, The One On The Last Night, Chess Match, The Wave, Clamp Paths on Tree, Cyclic Quadrilateral, Unpleasant Ones, Maximum Production, Tic Tac Toe, Chefs Homework Dilemma, Relativity, Dakimakura Distribition, Different String, Even tuples, XOR Equal, advance pattern, Chef and Closure, Chef and GCD, Three Dices, Equal Difference, Beautiful Pairs, XOR-ORED, Cricket Ranking, Shoe Fit, Chess Format, Shuffling Parities, Food Chain, Red Alert, Interesting Representation, Make the Matrix Beautiful, Positive Spewing, Matrix Permutations, Longest Good Segment, Problem Difficulties, Olympics Ranking, Jon and Selina, Penalty Shots, Friend Groups In A Line, Say No To Drugs, Black cells in a chessboard, Large Square, Bus full of passengers, India Fights Corona, Clear the Array, Which Division, Team Formation, Odd GCD, K-th Maximum, Maximum Length Even Subarray, Programming Languages, Just a Graph, Longest Spanning Substrings, Chef and Deque, Hardest Problem Bet, Odd Repeat, Maximise the Subsequence Sum, Tree Distance Sum, 2-D Point Meeting, Airline Restrictions, Travel Pass, Meet In The Median, Task Times, Longest AND Subarray, K - balanced string, Digit Removal, Find the Direction, Obtain the Sum, The Two Dishes, Tsetso Subarrays, Cars and Bikes, Good Weather, Fake Swaps, Fake GCD, Adjacency Hatred, Make it Divisible, MEX-OR, A Subtask Problem, Three Boxes, Two Dishes, Prefix Sums, Vaccine Dates , Alice vs Bob Faceoff, Maximum Light Up, The Preparations, Professor And Directions, Chef And Salary Pay, Yet Another Shortest Path Problem, Yet another SOD problem, Magical Doors, Diagonal movement, Chef and Magical Steps, Drunk Alcoholic, Which Mixture, FIXFIX, RCB and Playoffs, Cool Name, CODE3, Gold Mining, Print The Pattern, Lucky Number, Test Match Series, Alternating Work Days, Round Robin Ranks , Dance Moves, B - Count Unique Elements, Pass or Fail, Equal Beauty, D - Another Bracket Problem, Min Max LCM, Exactly N plus 1 Values, Odd Sum, Find the Modulus, 01 Subsequence, Maximum GCD, Decrypt the Code, Queens Placement , Chef Pizza Delivery, Equal Coins, Which Fuel is Cheaper, Binary Inversion, The One with Russ, GCD of Prefixes, The One with All the Candy, String Game, Partition It, Chef on Vacation, New Piece, Can_Reach, Odds and Evens, Can You Eat It, Make it Divisible, Palindromic Binary Numbers, Compare those strings, Back to Campus, Make them equal, The One Where It All Began, Minimum Number of Pizzas, Chef and Stock Prices , Strange Minimization, Yet Another Tree Problem, Rock Paper Scissors, List of Lists, Utkarsh and Placement tests, Remove Element, Balance Zeroes and Ones, Car Range, Game between friends, Maximum Factors Problem, Character frequency, Chef and Contest, Sleepy Chef, Indivisible Permutation, The Alternating Sum, Distinct Elements, Coordinate Points, The Squid Game, Stable Sequence, Genes, Hopscotch, Tree and Brilliant Array, Chef and Pal, Red Light, Green Light, String protocol, Two Rooks, Keplers Law, Friends Meetup, Musical Chairs, Break the Balance, World Chess Championship, Chef and Vacation Transportation , Chef Loves 1010, Girls_only, Maximum Trio, Devendra and Water Sports, Count Number of Peaks, Favourite String of Chef, Akash and Grid, And Or Union, Covid and Theatre Tickets, Retrieve back the Array, Vishesh and his Popcorn Combo, Sarthak and his Magic Grid, Vedant and his Hidden Array, Covid Spread, Harshikaa and the Rain, Chef and Riffles, Area Sums in Convex Polygons, Mean Maximization, Subsegment Divisibility , Non Zero Xor, An Interesting Sequence, Mask Policy, TCS Examination, Third Wave, Chef and Fixed Deposits, Hungry Ashish, Encryption, Equal Card Game, Elections in Chefland, Subsequence, Sum of products (hard version), Average of Three, Swap the numbers, Chef and Profits, Subarray Mex, Avoid Contact, Chef and Subset Additions, Chef and Lockout Draws, Badminton Serves, Divisors and Reciprocals, Yet Another Constructive Problem, EVM Hacking, Binary Base Basics, Equal MEX, Remove Adjacent, Chef and the Hair Salon, Bitwise swaps, War II, Akash and Function, K Distinct Array, Chef and NextGen, Stone Game, Careless Chef, Car or Bus, Valentine is Coming, Count the Notebooks, Hostel Room, Reverse Number, Distinct Binary Strings, Too many items, Shopping Change, Complete the credits, Guess the bottom face, Lazy Salesman, Peaceful Party, Blackjack, Four Equidistant Points on a Grid, Good Program, Parallel Processing, Battery Low, Fill the Bucket, Tyre problem, Chef and Instant Noodles, Watching Movies at 2x, Chessboard Distance, Permutation Xority, Bomb the base, Max BIT Sum, Self Defence Training, Magnet Sort, Car Choice, Qualify the round, Count the Holidays, Janmansh and Games, Janmansh and Coins, Janmansh and Assignments, Equal Mex Splitting, Oh I Dont Care, Substring of a Substring, Akash and Missing Class, Count the Ones, Exact Marks, Alice and Marks, Integers that sum to the same value, Discus Throw, Bath in Winters, Wordle, Chef team, Minimum Coloring, Gift Shop and Coupon, Chef and Water Bottles, Swapping Chefs Way, Credit score, Chef and Chocolates, Chef and Races, Balanced Reversals, Increase IQ, Winter, Minimum number of coins, Buy 2 Get 1 Free, Chef and Brain Speed, Chef and Gym, Chef and Masks, CRED Coins, Separate Them All, The Three Topics, Alternating String, Sign Moves, Cup Finals, The Unchanging OR, Group Assignment, Economics Class, The Rating Dilemma, Maximize the Minimum, Binary String Cost, Volume Control, Finding Shoes, Flip Sorting, Avoid Alternating, Sasta Shark Tank, Rearranging digits to get a multiple of 5, Test Averages, Speed Limit Test, Bucket and Water Flow , Apples and Oranges, Chef and Chocolates, Course Registration, Funny Hand, Important Pages on CodeChef, Email Reminders, Dazzling GCD Pair, Prime Sum, The Cheaper Cab, Monthly Budget, Minimum Cars required, Non Adjacent Flips, Make Them Equal, Dazzling AXNODR Challenge , Ezio and Guards, The Cooler Dilemma 1, The Cooler Dilemma 2, Pairwise Xors, Is the Score Consistent, Expiring Bread, Lunchtime, Mario and Transformation, Mario and Bullet, Pair Pain, Odd Split, Admins and Shopping, Water Requirement, Police and Thief, Dazzling Even-Odd Challenge, Candy Distribution, Bob at the Bank, Chef and Happy String , Equalizing Numbers, Six Friends, Best Coupon, Pseudo Sorted Array, Compress the Video, Who is taller!, Easy Permutation, Chef and Wire Frames, Array Equality, Chef and Chapters, Chef and Bird farm, Pushpa , Doubled Distances, The Mango Truck, Roller Coaster, Beat the Average, Laptop Recommendation , Infernos, Too Mean, Yet Another Palindromic Problem, Four Arrays, Closest Vowels, Sugarcane Juice Business, Football Cup, Miami GP, A Bit Easy, Chef gives Party, Get Subscription, Good Pairs, Dominant Army, Circular Track, Difficulty Rating Order, Practice makes us perfect, How many unattempted problems, Recent contest problems, Problems in your to-do list, My very 1st contest!, Even Subarray XOR, A or B, Xor Palindrome, Chess Ratings, Score High, Total Prize Money, Make them Zero, Sort the Array, Doubt Support Availability, Whatsapp Messages, Take discount or Not, Is this priority or parity!, Path Parity, Parity Fun, Determine the Winner, The two numbers, Rating Improvement, Playlist, Break the Stick, First and Last, Divisible by 3, How Many Maximums, Age Limit, Equal Distribution, Minimum number of Flips, Chairs Requirement, Possible GCD, Equal Strings, Zero Ones Equal One Zeros, Non-decreasing AND and OR, Array Sorting, The Optimal Pairs, Burgers, DNA Storage, Joining Date, Waiting Time, It is My Serve, Too many Floors, Determine the Score, Maximize Difference, Alternating Strings, Atleast and Atmost, Dense Bracket Sequence, Biryani classes, The Attack of Knight, Jogging, Xor and Multiply, Make all equal using Pairs, Complementary Strand in a DNA, Fitness, Chef and his Apps, Best of Two, Retrieve the Array, Adjacent Sum Parity, Change Row and Column Both, Bidding, Enough Space, K-MEX, Xor Permutation, Chef Drinks Tea, Students-Far From Hostel, High Accuracy, Journey of the Knight, Sort the String, Counting Words, MATH1 Enrolment, Game of Piles Version 1, Slow Solution, Pass the Exam, Chef and Candies, Chef On Date, Copy and Push Back, Construct N, End Sorted, Minimum Coins, Chess Time, Buy Lamps, Fill The Grid, Concat Sort, Passes for Fair, Fill Candies, Interior Design, The Last Levels, Easy Pronunciation, Maximum Median Matching, True and False Paper, Largest Family, Positive array, N Buttons 1 Bulb, Chef in his Office, To Divide or Not To Divide, Sum of Product 1, Insurance, Hungry Chef, Split The String, High Frequency, Is it hot or cold, Maximise the Tastiness, Valid Minimum, Discount, Mileage matters, Nearest Court, Average Permutation, Copy and Paste, Final Population, Different Medians, TV Discount, Dominant Element, Angled Flip, A drawing game, Tree of Trees, Sale Season, XOR with smallest element, Hello Equation, Two Trains, Maximum Submissions, Make A and B equal, Tree Coloring, AI Analysing Code, WA Test Cases, Air Conditioner Temperature, K-Flip, Gritty Grid, Subtract 12 Operation, MEX Permutation Difference, Height of Rationals, Car Trip, Greater Average, Odd Pairs, Make A and B equal, Weights, Number of Credits, Ticket Fine, Balls and Boxes, Permutation Clear, Fever, Mean and Median, Broken Phone, Yet Another Chef And Numbers, OR Tuples, Distinct Numbers, Pokemon Battles, Interesting Subarray, Good Pairs, K-Subarrays, Nearest Exit, Chefland Games, Sleep deprivation, Flip the cards, Equalize AB, Stick Break, Permutation Creation, Even Splits, Non-Negative Product, Two Different Palindromes, Increasing Addition, Remove Numbers, Adjacent Pairs, Where Is the Root, Ranklist Pages, Reach the Target, Remove Bad elements, Maximum Subarray , Suspense String, Audible Range, Expert Setter, Speciality, Podium Finish, Minimum Pizzas, Binary Substituition, Building Race, Single Operation Part 1, Red Green Grids, Tax in Chefland, Paper Cutting, Palindrome Flipping, Card Removal, Minimise LCS, Different Consecutive Characters , Weird Subarrays, Row Bombing, Reach on Time, Odd Sum Pair, Strange BST, Sorted Substrings, Make Multiple, Final Sum, Pythagorean Pair, X Jumps, Max minus Min, Test Score, STAR Pattern, Count Partitions , GCD Sort, Packing Books, Make Length 1, Tasty Decisions, Greedy Grid Moves, Avoid Squares Please, Maximum Angriness, Mario and the Broken String, Luigi and Uniformity, Range Assign, Number of Distinct Elements Minimize, Xor Array, Prime Factor Division, Parity, Candies, Distinct Colors, Water Consumption, Hackerman, Split and Maximize, Spliting Balls, Time Complexity, Water Mixing, String Game, Good Binary Strings, Palindrome by Splitting, Just Like Mob!, Binary Battles, Squats, Monopoly in Chefland, Another Standard Problem, Expensive Steps , Minimum Number of Ones, Counting Problem, Tour of King, Boring String, Rain in Chefland, Interesting Array, Bull or Bear, Make AP, Make Money, Divisible by A_i, Gcd of Subarrays, Good Investment or Not, Divisible by K, Reach fast, Maximise XOR, Adjacent Pair Swaps, Scalene Triangle, Convert to permutation, Longest Subarray, Kitchen Timings, Spice Level, Cost of Groceries, Minimum distance between 1s, Pet Store, Prime Reversal, Frequency Array Retrieval, MEX, Instagram, Facebook, Snapchat, Asymmetric Swaps, Perfect Trio, Maximizing LCS, Smallest Difference, Indivisible, N Triplets, Sum it, Find an integer, Base or Bias, XOR Tree, Chef Plays Ludo, Multivitamin Tablets, Hamiltonian Tree, Lucky Numbers, Append for OR, Elevators, Mana Points, Maximum of GCDs, Minimize the Maximum, Array Halves, Chef And Babla, Far from origin, Battery Health, Redistributing Chocolates, Overspeeding Fine, Lcm hates Gcd, Read Pages, Minimal Inversions, Odd Even Binary String, Prefix Ones, Three Powers of Two, Two Ranges, Saving Taxes, Profit Increment, Make Array Odd, Zero String, Expected Value, Contruct Array, 400M Race, Love Squares Hate Cubes, Not Divisible, Bi_lindrome!, Permutation and Modulus, Netflix, Tekken, Tom and Jerry Chase, Codechef Airlines, Three Numbers, Bitwise Equation, Valid Expression, Passing Marks, Candy Store, Good Turn, One Stone or Two Stones, Split or Decrease, Add smallest prime factor, Distinct Opposite Sums, Better Deal, Ageing, Permutation Subsequence, Prefix Permutation, Just One More Episode, Single-use Attack, Running Comparison, Equal Elements, Good XOR, Distinct Matrix, Maximum Capacity, Sunny Day, Find eX, Reach Home, Difference Matrix, MIN To MAX, Candy Division, Chef Eren, Budget of Technex, Order by XOR, Couple Game, Digit Operation, Chef and Donation, Elections in Chefland, Max Binary, Chef And Adjacent Sums, Melt Gold, Crazy Bishops on Chessboard, Four Tickets, Buy Ten Packets, Efficient PAN Linking, Return the Change, Inside The Stadium, IPL Ticket Rush, Can Chef , GCD Queries, TripTastic, Least Size, Minimum Operation, String Game , Cricket Match, Unstable Subarray, Chef and Battery , Largest Y, CodeChef Learn Problem Solving, Maximise Score, Existence, Monopoly, Plus 2 or Minus 1, AB plus C, Positive or Negative Subarrays, Subarray Removal, Parliament, DDMM or MMDD, Masterchef finals, Online or Offline, Largest and Second Largest, Cheapest Office, Learning SQL, AP Free Sequences, Printing Binary Array, Favourite Numbers, Anti Palindrome, Rectangular Tiling, Limited Shopping, Odd GCD Permutation, Chef Odd, Blobby Volley Scores, Bus Seat Numbering, Parking Charges, The Gift, Gymkhana Election IIIT-A, CodeChef Streak, Possible or Not, The Vowel Matrix, Distance Coloring, Dotify Playlist, Water Filling, Oneful Pairs, Break Free, NASA, Right There, 7 Rings, Problem, Alt-Tab, Boxes, Donation Drive, Donation Rewards, Transfusion Chain, EVacuate to Moon, Messi vs Ronaldo, Bells of Pilgrimage, AB Difference, Airport Management, 2000, Segment Three, Two Piles, Card Swipe, Endless Appetizers, Prime Permutation, Puzzle Hunt, Exclusion-Inclusion, All New CodeChef, GCD Discount, Lucky Seven, Slow Start, Stamps 100, Air Quality Index, Concussive Sequence, Warrior Chef, Work Smarter, Not Harder, Lockpicking Chef, Off By One, Array Sum, Sports Section, Selling Insurance, Chef and Stocks, Fan Poll, Chef Fantasy 11, Chandelier, Sunday Brunch, October Marathon, Dice Number, Find Diameter, GCD and LCM, Spooky Sequences, Survival Time, Palindromic Prime Numbers, Rivalry, Pending Assignments, Clear Day,  Am I Lucky!

Problems Authored (0)

No Contribution

Problems Tested (0)

No Contribution

Editorials Contributed (0)

No Contribution