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Practice Problems (3362):
Practice:
Prime Generator, Transform the Expression, The Next Palindrome, Factorial, Sphere in a tetrahedron, Small factorials, Pouring water, Play on Words, Highways, Ordering the Soldiers, Stable Marriage Problem, The Game of Crosses & Crosses, Poker, Mixtures, Bytelandian gold coins, Enormous Input Test, Longest Common Subsequence, Sums in a Triangle, Simple Sorting, Not a Triangle, GCD2, Super Factor Sum, ATM, Some More Homework, Johnny and the Beanstalk, Paying up, SudokuX, Life, the Universe, and Everything, A Very Easy Problem!, Paying up, The Rise and Fall of Power, An interesting subsequence, The Lucky Draw, The White Knight, Johny the farmer, Golf course, Nuclear Reactors, Crystals, Sum of numbers, Prime Palindromes, The Lead Game, Permutation Cycles, Discrepancies in the Voters List, A puzzle game, Modulo, The N Queens Puzzle Revisited, The LCS Problem Revisited, The Best Box, Palindromic Numbers, Maze of Digits, The Matrix Game, Stone Game, Anagram, Palindromic Subsequences, THE GAME, Treasure Hunting, The Next Prime, Edit Distance, Array Transform, The Black and White Knights, Robot Game, Yet Another Number Game, Flipping Coins, Multiples of 3, Maximal crosses, Squirrel and chestnut, Head office building, Ripple-Carry Adder, Randomly Testing Circuits, Backup Functions, Count palindromes, Fetching Cooking Tools, Arranging the Appetizers, Baking Cupcakes, Cleaning Up, A Simple Equation, Decreasing String, Stepping Up, Product of Digits, The Perfect Chocolate Candy, Birthday Candles, Cooling Pies, A New Number System, Algebra Express, Chess Pushing Game, Choosing Cook Off Problems, N Knights Problem, One Dimensional Game of Life, Dinner Party Socializing, Cutting Recipes, Number Game Revisited, Ski Resort, Preparing Dishes, The Morning Commute, Pairing Chefs, Count Relations, Seeding The Pattern, Buying Land, Coloring Colorable Graphs, Holes in the text, Whole submatrix, Breaking Into Atoms, Three Way Communications, Cutting Rods, The Route, The Key, The Mother-ship, Money Transformation, Palindrome Palindrome, Rectangles Counting, The Great Wall of Byteland, Cipher Text, Parade, Frosting Cupcakes, A Prime Conjecture, Chef Teams, Jump it up, Popular Rice Recipe, Billboards, Socializing Game around Pizza, Trial of Doom, Packing the Golden Triangles, Large Kitchen, Most Popular Friend, Misinterpretation, Garden Squares, Vote for the Noodle Soup, Open the Dragon Scroll, Angry Chef - Crispy Chips, Misinterpretation 2, Chefs new Pet, Sine Partition Function, Polynomial Partition Function, Target Practice, Hotel Bytelandia, Pattern, Evil Book, Across the River, Divisor Sum, Lucky Days, Generalized Arithmetic Progression Free Sequence, Sum of Factors, Arithmancy, Calendar, Subanagrams, Houses and Restaurants, Graph on a Plane, Ciel and A-B Problem, Dynamic GCD, Lucky Long, Card Shuffle, Find a Subsequence, Flight Distance, Makx Sum, Home Delivery, Count of Maximum, Spoon in Matrix, Fit to Play, Daily Train, Xor it, Combination Generator, Magic Trick, How many Islands, Divisor Summation, Is it a tree, Double Strings, Jewels and Stones, Substrings on a Tree, Little Elephant and Strings, Stacking Pancakes, Greatest Dumpling Fight, Connected Components, String encryption, Little Elephant and Candies, Little Elephant and Movies, Little Elephant and Mouses, Little Elephant and Colored Coins, Top Batsmen, Expected Maximum Matching, Lights, PRIME, Little Elephant and Boxes, Little Elephant and Cards, Little Elephant and Exams, Kisses & Hugs, Remy paints the fence, Little Elephant and Bombs, Fierce Battles, Little Elephant and Balloons, Little Elephant and Lemonade, The Gray-Similar Code, Little Elephant and Bubble Sort, Arranging Cup-cakes, Event Organizer, Closing the Tweets, Prime Permutations, Connecting Soldiers, Golden Trees, Matchsticks, Block Game, Range of Data, Delivery Boy, Ciel and Receipt, Ciel and Map, Ciel and Tomya, Guess the Middle, Queries About Numbers, Machine Gun, Knight Moving, Three is Crowd, Codechef Password Recovery, Forced Output, Code Crazy Minions, Find the Goalkeeper, The New Scheme, Chef Game, Candy Collecting Game, Granama Recipes, Coin Flip, Recipe Reconstruction, Carvans, Buy1-Get1, Book Exercises, Tourist Translations, Different Trips, Many Left, N Queens, Little Elephant and Permutations, Sridhar Likes Travelling, Buying Sweets, Tennis Tournament, Magic Board, Rat Maze, The Minimum Number Of Moves, Arithmetic Progressions, Barcelona Gameplay Tactics, KGP Summers, Triangular Queries, Subset Sum, Expected Greatest Common Divisor, Root of the Problem, Packaging Cupcakes, Reversing directions, Chef of the Year, Climbing Stairs, ChefGame, Count the Words, Vacation, Observing the Tree, Approximately, Minimum Distance, Many Chefs, Defacing Score, Three Different Numbers, Final Battle of Chef, The Glittering Caves of Aglarond, The Mirror of Galadriel, Merciless Chef, Cipher, Snape and Ladder, Kingdom Unity, Find Minimum Distance, The Ball And Cups, Palindrome, Traveling Plan, Level Of Difference, Hello Hello, Prime or not, Fire Escape Routes, Lack of Logic, Almost Prime, BiCo Gaming Grid, A OR B, Another Factorial Problem, Superpowers of 2, ZooZooland Water Shortage, Lucky 13, Juno Puzzle for May, Name Reduction, Your Name is Mine, Save The Princess, Just Some Permutations 3, Andrew and the Meatballs, Andrew and the Strings, Dessert Wizard, Mountain Holidays 2, The Number Of Solutions, SORT, Two k-Convex Polygons, Count Special Matrices, Lapindromes, Cool Guys, Furik and Rubik and Sub Array, Subtraction Game 1, Chef and Segments, Counting The Important Pairs, A Plus B Again!, Maxim and Dividers, Sereja and Game, Sereja and Commands, Count K-Primes, Attic Crossing, Sereja and two strings, Online Shopping, Sereja and Graph, Prime Distance On Tree, Chef and Integers , Gangsters of Treeland, Tasty Dishes, Splitting Candies, CAO Stage-3, Pairwise AND sum, Matrix, Safe Routes, Three-Degree-Bounded Maximum Cost Subtree, To Queue or not to Queue, Entangled Strings, Chef and Magic Numbers , Chef and The Right Triangles, Chef and The Divisibility Queries, Quadrilateral, Number of numbers, Yet Another Cute Girl, Counting D-sets, Fibonacci Number, Strange Matrix, Chef and Pie, Factorisation, Kamehameha, Tree, Code, Polo the Penguin and the Lucky String, Summing up the Areas, Game Of Thrones, Polo the Penguin and the Test, Friendly Numbers, Polo the Penguin and the XOR, Uncle Johny, Square Digit Squares, Substring Problem, Missing some chairs, Chef and Codes, Girl Friend and String Gift, Polo the Penguin and the Tree, Coding Skills, Lucy and the Math Analysis, Statues, Stand Up, Lucy and Palindromes, Chefs in Queue, ForbiddenSum, ATM, Help Ragetti, Valley of Death, Rescue Jack Sparrow, Number Mirror, Am I a Fibonacci Number, Lowest Sum, List Editing, Lucy and Question Marks, Reign, Rectangular Queries, Query on a tree VI, Chef and Substrings, Chef Goes Through Segments, Chef and Favourite Sequence, Mike and Task Packages, Reign 2, Counting Matrices, Hard Disk, Walking Path, Rich Rhyme, Family of Recurrences, Chocolate Division, Merging Files, Changing Money, Bon Appetit, Please like me, Chef and Girlfriend, Chef and Feedback, Count on a Treap, Team Split, Election Campaign, Olympic Village, Stairway Reduction, One-Way Roads, Message Coding, Sequence Alignment, Longest Common Pattern, Little Elephant and Subarrays, Sum Up, Farmer Feb, Chef and the Cake I, Chef and the Orders, Chef and Functions, Chef and Shop, Chef and String, Spec Ops, Chef and Numbers, Cards, bags and coins, Subtraction Game, Compilers and parsers, Walk, Maximum number, GCD condition, Chef and Magic Arrays, The Street , Little Chef and Numbers, Sherlock and the Perfect Array, Atoms in the Lab, Counting Bits, Ingredients, Subarray Xor, Sherlock and Inversions, A Story with Strings, Chef and Remissness, Chef and Kingship, Chef of The Ancient, Dynamic Trees and Queries, Chef and Reunion, Cross the Maze, Game of Divisors, ABC-Strings, XOR Minimization, Sereja and ASum, Sereja and D, Sereja and Arrays, Chef-jumping, Chef and Digits, Little Elephant and T-Shirts, Valar Morghulis, Permuted Array Problem, Dividing Stamps, Make It Zero 3, Book Game with Chef, How many sequences, A Game With a Sheet of Paper, Chef and Reversing, Chef and Frogs, Chef and Ground, Chef and Chain, Chef and Segment Game, DARTS501, Chef and Tree Game, Chef and Rainbow Array, Sereja and Bubble Sort, Sereja and Equality, Chef and Rainbow Array - 2, Chef and Strange Matrix, Chef and Subarray, Sereja and Arcs, Chef and Bracket-Pairs, Shortest Path in Binary Trees, Chef and Swaps, Chef and Left-Right, Chef and Square, Divide the Cake, Ups and Downs, Stone, Count Substrings, Count Permutations, Count Substrings, Permutation Shuffle, Team Sigma and Fibonacci, Reach The Point, Dish Owner, The Leaking Robot, Approximately II, Addition and Multiplication, Forgot Password, Maximizing Marks, Rectangles, Game of Numbers, Counting Flags, Knapsack Problem, Sherlock and the Grid, Substring Query, Coprime Triples, The Smallest Pair, Dynamic Inversion, Subarray GCD, Subarray LCM, Chef and sequence, Fibonacci Numbers on Tree, Push the Flow!, Rectangle Query, Copy-Paste, Present for Andrii, Sum Queries, Friends, Chef and Array, Fun with Rotation, Flooring, Harrenhal, Dragonstone, Children Trips, 2048, Deja Vu, Chef and Strange Formula, Tanu and Head-bob, Marks Discrepency, Convert the Expression, Jam, Chef And Fibonacci Array, Sereja and Order, Sereja and Permutations, Magical Girl and Colored Liquid Potions, Updating Edges on Trees, DevuLand, Dinosaurs and Laddus, Chef and easy problem, Chef and easy problem 2, Chef and medium problem , Chef and medium problem 2, ICPC Pre-Prelims Practice Round, Bye, inversions!, Cyclic Prefix, Determine the Maximum Sum of Weights, Steady tables, Kali and Devtas, Solving the Practice Contest, Spiderman and Jumping, The Dirty Path, Distinct Characters Subsequence, Chef and A Large Permutation, Chef and Notebooks, The Army, Walk on the Axis, Maximum Average Sub-Array, A game of consecutive piles, Physics Class, Even or Odd, The Problem Set, Let us construct palindrome, Chef and a great voluntary Program, Chef and Churu, Player, Course Selection, Ground Stations, Chef and Strings, Mangalyaan-2, Landing Platform, Mahesh and his lost array, Sereja and Salesman, Three elements, Chef and Apple Trees, Sereja and GCD, Discount on crackers, Cracker shops, Jai Hanuman, Covering Sets, Lost Graph, Brackets, Petersen Graph, Sereja and GCD 2, Chef and Keyboard, Chef and Problems, Chef and Stones, Max Array, Zombinatorial, Dividing the Students, Special Shortest Walk, Charlie and Prime Numbers, Ramanujan and Numbers, Billiards, Sereja and Two Lines, Sereja and Votes, One Dimensional Kingdoms, Delivery Man, Queries On Tree, String Matching, Bread, Random Number Generator, Drawing Contest, Sequence Containment, Kings Dinner, Interview Scheduling, Robot Movement, Good Joke!, Tour Planning, Pilgrimage, Irrigating Farms, Finding Exponent, Fit Squares in Triangle, Piece of cake, Dhonis Bowlers, Hugphile Order, Matryoshka Dolls, Kiwi Number, Jersey Number, Gabba sprint, Many bananas, Gcd Queries, Suraj goes shopping, Tojo hates probabilities, Random Rudreshwar, Sign Wave, Let us play with rank list, Find Distance, Chef and Equality, Little Chef and the King, Equilibrium number, Not Palindrome, Factorization, Let us play with even and odd numbers, Chef and Interview, Message Typing, Chef and Strange Operations, Lucky Four, Thiruttu pasanga 2, Message Passing, Broken Telephone, Median, Inversion sorting, Big Queries, Mystery Secret Code, Strategy for the World Cup, Chef and His Friend, Devu and binary String, A game on a graph, Cats of Schrodinger, Library and Headcount, Pair of Numbers, Enemy at the Gates, Andrash and Stipendium, Fibonacci, Chef and Memory Limit, Virat and his challenge, Way Out, Chef and Prime Divisors, Easy One, Little Party, Chef and Laptop, YJump, Set Difference , Black-white Board Game, How to Minimize a String, Chef and new recipe, Chef and Balanced Strings, Devus and their voting system, Palindromeness, Saving a gift of love, Chef and Cake, Flip Flops, REVERSE, Equality, Version Control System, CHEF AND AUCTION, Prime Palindrome Sum, How to Repaint a Fence, House Cleaning, Euler Totient Function Extended, Tickets, Chef and Friends, Snow Leopard and sum of primes, Bank and vulnerable passwords, Snow Leopard and his funny list of videos, Clarke and Australian Cricket Team, Counting Primes, 3D Queries, Counting on a directed graph, Math Bond, Strange Race, Busy-ness, Dance Competition, Laboratories, Ankit, Srijan and a game of stone piles, King test to his sons, Accommodating tribal clans, Save the kids, Gravity Guy, Edit Distance Revisited, Displaying Da Vinci work, Unlock Secrets or Leonardo, Teaching binary to a child, Handling the explosives, MasterChef, Yet Another Problem On Strings, A New Scheme, Mix Sorting, Find Most Repeated Character, Find Missing Number, Spiral Form, Na2a and lucky stone, Kazi And The Contest, Rohith and Circles, Array Operation, Devu and Grapes, Add Two Numbers, Find Remainder, First and Last Digit, Smallest Numbers of Notes, Sum of Digits, 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, Chain of Doughnuts, Chef and Dolls, Chef and his Sequence, Clash of Clans, Merge Sort, Nikitosh and xor, Number of Ways , Devu and friendship testing, Rupsa and the Game, Entrance Exam, Make XOR zero, Devu and most energetic minion, Train Partner, Cops and the Thief Devu, Maximize Disjoint Pair Sum, Cooking Machine, Time measure, Devu and his mouse Jerry, Divisibility by 9, Chef and Trees, Chef and Table Tennis, Aggressive Negotiations, Longest non regular parentheses sub-sequence, Churu and Balls, Count Subarrays, Count Steps in Matrix, Strange operations, Chef and Bitwise OR Operation, Chef and Two Strings, Chef and Tennis, Niceness of a tree, Greedy puppy, Puppy and game, New City, Chef and insomnia, Future of draughts, Chef And The Hiring Event, Fenwick Iterations, Simple Queries, Chef and Segments, Who dares to be a millionaire, Chef and Super Array, Chef and Rectangle Array, Receipt Recovery, Lighthouses, Forgotten Language, Cracking the Code, Chef and collection of stamps, Spheres, Chef and the stones, Chef and the Cards, Chef and the XORed Number , Chef and the Number Sequence, Churu and lost string, Eugene and function, Chef and the Wildcard Matching, Capital Movement, Make Palindrome, Minimum Maximum, Rupsa and Equilateral Triangle, Easy Queries, Coffee Breaks, Misha and Gym, Sum of palindromic numbers, Yet Another Problem About Sequences, The Gift Of Raksha Bandhan, EASY SORTING, Super Numbers, Chef And Operators, Jump mission, Simple Sum, Stacks, Efficient Delivery, LuckyLand Lottery, Cyclist Race, Plane Division, Chef and cakes, emitL, Pure Alphabets, Counting Zigzag Sequences, Oracle Devu and Longest Common Subsequence, GCD on Tree, Max Subarray GCD, Mahasena, Acyclic Graph, Palindrome Pairs, Second LIS, Factorial to Square, Word Stem, Rotating Arrays, Almost Sorted Permutation, Bhallaladeva, Seats, Just Update and Print the array, Chef-Detective, Processing a string, Exam results, MST, Falling Rocks, Finding sum, Mutated Minions, Petr Contest, Computer Network, Ancient Berland Roads, Chef and Destruction, Matched Brackets, Wormholes, Matched Brackets 2, Round Table, Video Game, Distinct Codes, Query over Matrix, Black And White Cells, Palindromic substrings, Sereja and Line, Sereja and Array and Subtracting, Sereja and Pairs, Sereja and Tree 2, Product on Tree, Chef and Sign Sequences, Chef and Sub Array , Urban Development, Magical Strings, String Swap, In a planet far far away, The Christmas Gift, Jalebi Bai and Decks of Sweets, Chef and Pick Digit, Chef and Time Machine, The Parenthesis Tree, The making of a cake, Samosa Bhai and his Courier Company, Chef and Subarrays, Chef and Queries, The Christmas Cookies, MATHS - find sum, The Revenge of Jalebi Bai, Wait for it, Save The Trees, Call Center Schedule, Devu and Perfume, git, Circles and Squares, Jump on Buildings, Cat and Mouse, Similar Strings, Chota Mouse and his birthday cake, Longest Palindrome, COINS, Exponential Sub-Palindromes, Product of two numbers, Longest Common Subsequence, Bubble Swap Count, Chef and Fruits, Gaint and Sifat, Euler Circuit , Dabur Honey, Traffic Count, Social Network, Malvika conducts a Programming Camp, Malvika and Animesh play Red-Blue cards Game, Malvika is peculiar about color of balloons, Malvika conducts her own ACM-ICPC contest series, Animesh decides to settle down, Malvika gets bored along with her Cats, King Animesh decides to have a voyage to the sun, Crazy Malvika discovers Crazy Fibonacci function, Monika And Song, College And Gift, Radix Sort, The Return of Palindrome, Chef and digits of a number, Mike and GP , Number of Paths in a Grid, Not even planar, Dual Nim, Learn Segment Tree, Table Sum, Knapsack on Tree, Alternating subarray prefix, Modified Knapsack, The Line of Fire, Shil and Coprime Sum, COC battle, Optimal Reserve Price, Divisibility test, Largest Number, Simple Search, Faded Palindromes, Gift and Chef, Tanya and the Switches, Chef and Socks, Chef and Tic-Tac-Toe, Chef and Polygons, maximize the sum, Chef and math, Fullmetal Alchemist, Chef And Special Dishes, Puppy and Board, Chef and Balls, Chef and Coins Game, Chef and Three Dogs, Puppy and Sum, Chef and Chocolate, Chef and Ballons, Chef and cities, Rain Water trapping, Arjun and Fibonacci, The Inversions, Shubham and Strings, Forest Gathering, Two Closest, Arrays Sum, Get AC in one go, Asya & Beautiful Strings, Ada and crayons, Good Roads, Total Palindromic Numbers, The Mortal Instruments, Simple Sum, Fire and Ice, Mr Thakkar want to go dream land, Chef And Magical Path, Century Coder, Minion Rush, Dragon Warrior, Counting Zeroes, The Closest Vertex, Ramesh And Suresh, Array Game, Range Modulus, Intersections, Golu and url shortner , chess, Cyclothon, Cab Service, Chef And Coloring, Maximum K Sums, Mr Swegwan and Arrays, Help with selection, Multiuser Environments, Shopping, Summer Internship, Help with distances, Probability, Vasya and Little Bear, Vivek and Sum Queries, Climbing Stairs, PrePre, Movie Weekend, Odd Divisors, Queries on a Binary Tree, Polygon, FIZZ BUZZ, Chef and Amazingness of Numbers, Optimal Shopping II, Daddy and Chocolates, Cooking Schedule, Large factorials, Eugene and big number, The Bracket Problem, Chef and Round Run, Cats and Dogs, Chef and Big Soccer, Laddu, Gargi and Strings, BookWorm, Coins And Triangle, Akhil Recovers The Lost Array, Very Simple Question Returns, Anmol and Running, Misha and Geometry, Akhil And Colored Balls, Akhil And Pending Homework, Chef and special numbers, Tandem, Devu and an Array, Akhil And Random String, Primitive Queries, Yet Another SubSegment Sum Problem, Kitchen Timetable, Better Maximal Sum, Sticks, Right Triangle, Chef and Robots Competition, Art, Longest Increasing Subsequences, Chef and Sad Pairs, Robot Walk, Sharing Candies, N different palindromes, Different Neighbours, Cutting Cake, Chefland and Electricity, Best Maximum Product, Xortest Path, Dividing into Regions, Interval Game, Chocolates for Everyone, Collisions, One more weird game, Square in numbers, Cube Towers, Chef Land, Chef and Mover, Travelling in a tree, Coloring A Tree, Good Numbers, Love among People, Chef and Guard Towers, Chef and Proportion, Chef and Numbers, Chef and Land, Chef and squares, Building Permutation, Lost Password, Tweedle-Dee and Tweedle-Dum , Pattern Craft, 3 Divisible Subsets, Ball Game, Chef and calculation, Will and Closed Set, Naughty Sanket, Drumpf for President!, Lumpy - The Bus Driver, So Close Yet So Far, Easy Triangles, Kaps and his wife, Arrogant Bahubali, If - Else Problem, Digit Longest Increasing Subsequences, Mathematics, Studying Alphabet, Lock-Free Stack, Matrix Transformation, Pascal Triangle, Sorting Tool, Second Year Pains, Completing favorite game, Take Turns, Kth Max Subarray, Sahil The Anime Lover, Naruto and Sakura, Joker and Batman, Raymond And Network, Asya & Happy Pokemons, A friends game, Lazy Jem, The Lost Arithmetic Sequences, Counting Strings, Asya & Number of Paths, Natural Factorial, Write a program to reverse an array or string, Chef and Inequality, Chef and Words, Chef and Tree, Zack And The Handkerchieves, Find The Factos, Weird Spider, Chef and Bike, Ash and Pikachu, Diagon Alley, Number Pyramid, School distance, Coldplay Concert, The Crofts Game, Break the tree, Konkatonka, Tree Palindromes, Batman v Superman, SMS Dictionary, Find The Digits, Number Lock, Pattern, The Reverse Game, Time Conversion, Prime Numbers, Cheater Motu, Sherlock and the Ugly Flower, Watson asks Does Permutation Exist, Sherlock Counts Ways, Chef And Clothes, Candy Game, Chef and midsems, Huge GCD, Chef and Stacks, Euron Problem, Chef and Cards, Mansi and Her Student, Chef and Roads, Sagar And Pens, Suresh and Game, Vatsal and his Bae, Minimum Cost Walk, Luther and Palindromes, Longest Increasing Subsequence, DIGITAL RAIL, DIGITAL INDIA, Restore the Permutation, FastFood Combos, Monica and toys, Bob and his problem, Infinitity, Sereja and Increasing subsequence, Exponential Deal, Missing Digits, Help Lost Robot!, Beautiful Arrays, Watson and Digit Sums, Colorful Grids, Robolympic Batons, Counting Lights, Query On Strings, Query On Arrays, The Counties, Download file, To add or to multiply game, Hill Jumping, Mr P and his Friend, Wow, Rangoli pattern, Number Theory, LOST NAMES, Placing Rook, Kirito in labyrinth, Subway Lines, Sebi and the highway, Sebi and the black money, Algorithmist2 And Pheonix123, Proper Divisors, Chef and Image Processing, large fibonacci, Test the Year, Pattern Problem, Matrix Multiplication, Fibonacci, Remove Duplicates, Fluffy and Scoreboard, Fluffy and Flippy Bird, Fluffy and Typing Password, Fluffy and Tree Distance, Fluffy has a Robot, Maximum Xor Query, Visiting Friends, Evil Chris, Chef and his Students, Chef and Square Set, Tom & Jerry, Bear and Three Colours, Chef and Subset, Chef and Numbers, Coal mines of Kharagpur, Optimal Partition, Coal Mafia and Toll Tax, Bus Routes, Cookie Flavors, Mancunian Candidate Master Forever, ATM Queue, Moving Clams, ACM ICPC World Finals Accommodation, Voting Fraud, Sum and Xor, Alice and Bob play Contact, The Saviours, Special Cracker, Apaji Swings, Tim and BSTs, A Historic Discussion, Influence on Social media, ATM queue, Netcoin Verification, Hawala Arrests, Mancunian Hoards Black Money, Bob vs ATM, Playing World War II, Extreme Encoding, Zeroes VII, Optimal use of Nuclear Power plant , Mr Wireless, Sum the Alphabets, Roads, Chef and Points, Optimal BST Revisited, Quentin Tarantino, Superheroes and villains, Forming Teams Again, Maximizing Minimum Distance, Jumping Frogs III, Employee Voice Surveys, WiFi Expenses, Pacman, MST Queries, Chef and Circle, Chef and Array (Challenge), Reservior, Square It, Miss Spaghetti and her weird queries, Sealing up, Nothing in Common, Game of Friends, Mindfire & its Employees, Friend-zoned Parhi , King Bob, Segment Queries, Pattern, Pari and String, Digit Longest Increasing Subsequences 2, Median of Two Sorted Arrays, Sum of distances, Captain Virat and His Strategy!, Chef and His Apartment Dues, Most Frequent Element, Gerrymander, Cisco and Magical array, Bhavit and Valentines Day, Multiverse Queries, Xenny and Alternating Tasks, Cooking Game, Bear and Random Grid, Bear and House Queries, Next Permutation, Bear and Extra Number, Bear and Milky Cookies, Chef and Divisor Tree, Names of Places, Hidden Message, Bear and Cat Trap, (CH) Bear and Sorted Rows, Bandwidth of a matrix, Bear and Oveflow Points, Count Strings, Number Tower, Maximum of Three Numbers, Second Max of Three Numbers, Chef and Palindrome, Chef and Array Update, Logan and his XOR debacle, Chef and Kites, Easy One-Electricity Bill, Rainbow Graph, Yet Another Card Game, Golu and Sweetness, Safe Robot, Sorting Problem, Charles and the BRUTAL subsequences, Long Sandwich , Professor X and Grouping of Numbers, Logan and DIGIT IMMUNE numbers, Bear and Ladder, Bear and Species, Chef and Prime Queries, Stable market, Pishty and tree, BST Operations, Diameter of Tree, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes, Freshers Party, Legend of Zelda, The Birthday Tears, Max Out, The Legend, Friend Decryption, Beautiful Smriti, Rhett and Link, Bear and Candies 123, Bear and AB, Captain and his Shield , Factorial Problem, Flash vs QuickSilver, Mayank and Line Segments, Minimizing the dot product, Bear and Segments, Joey and food, Closest points queries, Bear and Segment 01, Gotham PD, Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers, Chef and Subsequences, A Good Set, Cloning, Xenny and Coin Rankings, Triplets, Snake Procession, Snake Eating, Protecting The Poison, Chef got Recipes, Temple Land, La Liga, Balanced Array, Hussain Set, Binary Tree, Cleaning the Space, Post Tree, SubInversing, Teleports, Bond And Fond, Consecutive Snakes, A temple of Snakes, Is It a Snake, Sticks, A Study in Bake Street, Chef and Universe, Snakes, Mongooses and the Ultimate Election, Snakes and their coup against The mongoose, Snakes and Graph, Four Points, Chef and Pairs, Add or Multiply, Mex division, Robots in a DAG, Black Nodes in Subgraphs, Harry and magical number, Hull Sum, Maximum Unique Segment, Two Numbers, Company and Club Hierarchies, Chang and Bitwise OR, Chang and the Perfect Function, Maximize Grid Score, Hit the Coconuts, Whats in the Name, Calculator , Suhana and Matrix World, Girls and Security Patrol, Girls and Historical Similarity of Strings, Walks on the binary tree, Boss and his Brother, At The End, Minimum Good Permutation, Find the Maximum Value, Good Pairs, Travel to all Points, Jon Snow vs White Walkers, Palindromic Game, Greedy Candidates, Strings and Graphs, Sum of Cubes, Querying on a Grid, Flower Pots, Weasel finds Staircase, Mathison and the Dynamo shuffle, Difference array, Fill The Matrix, Real obtuse, From heaven to earth, Product on the segment by modulo , Mathison and pangrams, Max Mex, Broken Clock, Weird Competition, Yet Another Sorting Tool, Queens Landing, Little Chef and Sums, Counter Test For CHEFSUM, Chef Hates Palindromes, Fast Exponentiation, Infinite OR Game, Statistics Construction, Subsequence Equality, Mixing Colors, A Balanced Contest, Shreyansh and Arrays, Maya and her love, Chef and Dice, Optimal Subset, Chef and Cook-Off Contests, Stack it up, Total Diamonds, Polynomials, The Subarray Problem, (Challenge) Connecting computers, New Game, Ninjas in a cake, Very easy problem, Singular prime problem, Modular GCD, Chef and Counting Test, Chef and Employment Test, Chef goes Left Right Left, Buggy Calculator, Minimum SubArray, LOGICAL Pattern, Rick, Morty and the Grid, Periodic Palindrome Construction, Obtain Desired Standard Deviation, Ordering teams, Compression Algorithm, Villages and Tribes, A tale of two trees, Days in Month, Strange Function, J - Reached Safely Or Not, C - Club of Riders, Organize The Wallet, Fibonacci Series, Prime Factorisation, Matrix Median, Hemu Class Attendance, K Fibonnaci, B - Get The Gold, F - Huge Number of Trees, Chef and Deforestation, A - Appearance Count, Skiing, Chef and XOR Queries, Random Pair, I - Secrets, D - Triangle Count, Smart Strategy, Shuffling, L-R queries, Vertex Cover, Black and Red vertices of Tree, Chef And his Cake, Chef And Easy Xor Queries, Method Resolution Order, Find an element in hidden array, Area of an amazing figure, Obtain Desired Expected Value, Queries on tree again, Four Friends, Penalty Shoot-out, Rotate Point, Red and blue points, Chef Counts Semi-BSTs, Spanning Tree, Codie Bird, Chef and Hamming Distance of arrays, Vaibhav and Ministers, Good and Bad Persons, Minimize the string, Chef and Triangles, SAD Queries, Uniform Strings, Simplify the Square Root, Killjee and k-th letter , Taxi Making Sharp Turns, Queries with GCD, Spam Classification Using Neural Net, Non Overlapping Segments, Generating A Permutation, Optimize The Slow Code, Number Game, Coupon System, Proprietary Probabilistic Problem, Quadratic Functions, Beautiful Array, A Tale of Three Squares, A Tale of Two Right Angled Triangles, Football Match, Large Sum, Longest Races, Magic Board, Nested Candy Boxes, K - Raw Power, Coder Life Matters, Poetic word, K-Concatenation, Maximum Score, Chef Cuts Tree, Rectangle, String Merging, Anupam and Raja, Minimum Maximum Partition, Partition the numbers, Hello World, Caesar cipher, Deducting Budgets, Horse racing, Tom and his game, Barrel and password, Angry Killjee, Chef and Special Array, Chef and Special Nodes, Chef And Chocolates, Multiple of 3, Smallest To Square, Multiply the Array, Geometric Progression Triplet, Make array great again, Easiest Problem, Chef and Game with Sequence, Finding the matrix, N Sequence (Keteki), Max Subarray (keteki), Belal and his interesting Equation, Chef And His Characters, Chef and Escaping from the Labyrinth, Survive in ChocoLand, Chef and odd queries, N-QUEENS, Campus Drive, Celebrity In Trouble, Save Patient, Rampage of Brainiac, Mighty Friend, Chef and Easy Problem, Zeros in Factorial, Cutting Plants, (Challenge) Biased Committee, Problem 3, FORM BIGGEST NUMBER, Chef and Cook-Off, Chef and Tuples, Chef and Chefness, Chef and Line, Distinct Behaviours, Maze Love, S Semi-palindromic, Triangles and Centres, Shreehari and Runtime error, Maximum Tree Path, The Legendry Coin Change Problem, Euclid in Manhattan, Feedback for Pragyan, Prefix borders, Game with numbers, Jumping in the hills, 3-D Image Processing, Thats Odd, Electron Base, Mix the Colors, Chef and Glove, Series Sum, Minions and Voting, 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Good Indices, Is it hot or cold, Maximise the Tastiness, Monks, Valid Minimum, Permutation GCD, Discount, Mileage matters, Nearest Court, Average Permutation, Chef & Cook Game, Adjacent Xors, Split N, Copy and Paste, Final Population, Different Medians, TV Discount, Dominant Element, Angled Flip, Sale Season, XOR with smallest element, Hello Equation, Two Trains, Maximum Submissions, Make A and B equal, Tree Coloring, AI Analysing Code, Minimum Sum, WA Test Cases, Air Conditioner Temperature, Gritty Grid, Maximal Prefix After Flip, Height of Rationals, Car Trip, Greater Average, Odd Pairs, Make A and B equal, Queen Blocks, Weights, Equal Distinct, Number of Credits, Ticket Fine, Team of Two, Departments (Easy Version), Balls and Boxes, Arithmetic Jumping, Fever, Mean and Median, Broken Phone, Yet Another Chef And Numbers, OR Tuples, Pokemon Battles, Water buckets, Interesting Subarray, Good Pairs, Nearest Exit, Chefland Games, Maximize Colours, Delicious Queries, Sleep deprivation, Flip the cards, Stick Break, Permutation Creation, Maximum Expression, Even Splits, Non-Negative Product, Two Different Palindromes, Remove Numbers, Break the elements, 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, Yet Another Palindrome Problem, Tax in Chefland, Paper Cutting, Palindrome Flipping, Card Removal, Palindrome Partition, Minimise LCS, Different Consecutive Characters , Weird Subarrays, Red Blue Flowers, 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, Nahaane Jaa, STAR Pattern, Packing Books, Make Length 1, Tasty Decisions, Avoid Squares Please, Maximum Angriness, Mario and the Broken String, Luigi and Uniformity, Xor Array, Paisa Double, Parity, Candies, Binod, Distinct Colors, Water Consumption, Hackerman, Split and Maximize, Spliting Balls, Time Complexity, Water Mixing, String Game, Lazy Ancestors, Good Binary Strings, Palindrome by Splitting, Akash and Dinner, Just Like Mob!, Binary Battles, Squats, Monopoly in Chefland, Expensive Steps , Minimum Number of Ones, Counting Problem, Tour of King, Boring String, Expense List, Rain in Chefland, Interesting Array, Bull or Bear, Make AP, Make Money, Sum of Cube , Divisible by A_i, Gcd of Subarrays, Good Investment or Not, Reach fast, Maximise XOR, Convert to permutation, Distinct Sequence, Kitchen Timings, Spice Level, Cost of Groceries, Minimum distance between 1s, Pet Store, X AND Y Tree, Prime Reversal, Frequency Array Retrieval, Flip the Prefix, Instagram, Facebook, Snapchat, Expected Sum, Asymmetric Swaps, Perfect Trio, Indivisible, N Triplets, Good Arrangement, Sum it, Find an integer, No sequence, Consecutive Xor, First To Last, Chef Plays Ludo, Multivitamin Tablets, Hamiltonian Tree, Lucky Numbers, Append for OR, Mana Points, Minimize the Maximum, Array Halves, Chef And Babla, Far from origin, Battery Health, Redistributing Chocolates, Overspeeding Fine, Negative Product, 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, Contruct Array, 400M Race, Love Squares Hate Cubes, Not Divisible, Alice Potter And Dumbledore Army, Bi_lindrome!, Netflix, Tekken, Tom and Jerry Chase, Codechef Airlines, Concat Palindrome, Bitwise Equation, Valid Expression, Passing Marks, Candy Store, Good Turn, Solve More Problems!, One Stone or Two Stones, Add smallest prime factor, Distinct Opposite Sums, Better Deal, Ageing, Prefix Permutation, Just One More Episode, Single-use Attack, Running Comparison, Equal Elements, Make Them Alike, Maximum Capacity, Sunny Day, Find eX, Make A-B Same, Reach Home, Difference Matrix, MIN To MAX, Candy Division, Chef Eren, Construct String, 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, Inversions of subsequences, Inside The Stadium, IPL Ticket Rush, Can Chef , GCD Queries, Sum Over All Arrays, String Game , Prefix Max, Maximum And Or, Cricket Match, Chef and Asteroids, Chef and Battery , CodeChef Learn Problem Solving, Maximise Score, Existence, Monopoly, Plus 2 or Minus 1, AB plus C, One or All, Crushed Apples and a Balance Scale, Parliament, DDMM or MMDD, Minimum Ugliness, Masterchef finals, Online or Offline, Largest and Second Largest, Learning SQL, AP Free Sequences, Printing Binary Array, Favourite Numbers, Anti Palindrome, Rectangular Tiling, Odd GCD Permutation, Chef Odd, Blobby Volley Scores, Bus Seat Numbering, Parking Charges, Maximum Sum Permutation, The Gift, Gymkhana Election IIIT-A, CodeChef Streak, Possible or Not, The Vowel Matrix, 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, Mex Array, Remove Multiples, 3-Blast Palindrome, AB Difference, Schrodinger Smiley, Airport Management, Triplets Min, 2000, Best of Two, Sub-Array With Maximum Sum, Segment Three, Maximize Ones, Two Piles, Card Swipe, Endless Appetizers, Puzzle Hunt, Exclusion-Inclusion, All New CodeChef, I Can Use Both Hands!, GCD Discount, Lucky Seven, Slow Start, Air Quality Index, Concussive Sequence, Minimize Xor Difference, Split and ADD, Warrior Chef, Work Smarter, Not Harder, Off By One, Parity Permutation, Bit Play, Sports Section, Chef and Stocks, Fan Poll, Chef Fantasy 11, Smallest Excluded LCM, Chandelier, Sunday Brunch, October Marathon, Dice Number, Double Rent, Bone Appetit, Dracula Eats, Dull Operation, Wishcraft, Survival Time, Minimum XOR, Palindromic Prime Numbers, Rivalry, Clear Day, Cricket World Cup Qualifier, Worth of a Video, Water Park, Marbles, Monsters, Exams, 404 Not Found, Cursed Indices, Food Costs, Fair Share Settlement, Maximum Score , Make N Zero, Thala For A Reason, Subtraction Sequence II, Greedy LIS Algorithm, Christmas Greetings, Make All Zero, A PLUS B Remastered, Decorating Christmas Tree, Codechef Round, Chef Product, Hattrick, Exact Savings, Not Prime Permutation, Roads and Flights, Spell Shortening, Subset GCD, Literacy Rate, Xorry 1, Advitiya, Judged, Cookie Day, Another Good String , Largest K, Sub or Swp, Anti Adjacent Swaps, Arya In Grid, Man of the Match, Binary Minimal
Contests (0):
None
Learning Paths (0):
None
Practice Paths (60):
Strings:
N Buttons 1 Bulb, DNA Storage, Wordle, Play Piano, Different Consecutive Characters , Malvika is peculiar about color of balloons, DDMM or MMDD, World Chess Championship, Chef and Happy String , Efficient PAN Linking, Studying Alphabet, Blobby Volley Scores, Lapindromes, Chef and Feedback, Chef and the Wildcard Matching, Password
Arrays:
Compress the Video, Find maximum in an Array, Snapchat, Cost of Groceries, The Squid Game, MIN To MAX, Bomb the base, Running Comparison, Red Light, Green Light, Largest and Second Largest, Kitchen Timetable, CodeChef Streak, Candies, Workers, Count of Maximum, Cops and the Thief Devu
Basic Math:
Fitness, Test Averages, 7 Rings, Second Max of Three Numbers, Chef and Chocolates, Make AP, Find Remainder, Integers that sum to the same value, Candy Store, Minimum Number of Ones, Negative Product, GCD and LCM, Sum of Digits, Make A and B equal, Favourite Numbers, Construct N, Farmer And His Plot, Two vs Ten, Puppy and Sum, Divisible by 3, Balls and Boxes
Contributions
Problems Authored (0)
No Contribution
Problems Tested (0)
No Contribution
Editorials Contributed (0)
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