Contest | Problem |
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OTHERS | FIBGCD |
CHEFROAD | |
CHEFMOON | |
CHEFARR | |
CHEFHILL | |
CHEFPOW | |
FOUR | |
INDSUB | |
JACKJACK | |
GRAPHLIS | |
JULY18 | JERRYTOM |
SEPT18 | FCTR |

Rajat De
- 7★rajat1603
- Don't let your dreams be memes
India
- People die if they are killed
- Student
- Chennai Mathematical Institute Chennai
- List of teams by Rajat De
- No Active Plan. View Details
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Submissions
Practice Problems (208):
Practice:
Prime Generator, Factorial, Small factorials, Marbles, Ordering the Soldiers, Bytelandian gold coins, Ambiguous Permutations, Enormous Input Test, Sums in a Triangle, Turbo Sort, GCD2, Life, the Universe, and Everything, Prime Palindromes, The Lead Game, Modulo, Odd, Fibonacci, Yet Another Number Game, Flipping Coins, Multiples of 3, Cooling Pies, Holes in the text, Temple Queues, Coloring Trees, Snakes and Ladders, RectangleArea, I Spy You, Houses and Restaurants, Dynamic GCD, GM plants, Count of Maximum, Equation Solver, Algorithm Challenge, Divisor Summation, Double Strings, Divisible By 17, Little Elephant and Balance, String encryption, Closing the Tweets, Matchsticks, Racing Horses, Stick the Sticks, Pizza Delivery, Root of the Problem, Packaging Cupcakes, Three Different Numbers, A OR B, Call me, Maybe, Superpowers of 2, Andrew and the Strings, The Probability Of Winning, Maxim and Dividers, Online Shopping, Number of Factors, Prime Distance On Tree, Elephant, Crocodile, Pairwise AND sum, Matrix, Sorting, Tree, Polo the Penguin and the XOR, Polo the Penguin and the Tree, ForbiddenSum, Am I a Fibonacci Number, Funny Marbles, Perfect Subarrays, Reign 2, Mike and Matrices , Counting Matrices, Chef and Numbers, Cards, bags and coins, Interrogating Gangsters, Maximum number, GCD condition, Fun with flooring factorial, Naughty and Balls, A Story with Strings, XOR Minimization, Coin Calculator, Chef and Graph Queries, Book Game with Chef, Chef and Reversing, Chef and Frogs, Chef and Subarray, Chef and Bracket-Pairs, Shortest Path in Binary Trees, Stone, Count Substrings, Reach The Point, Lucky Fives, Counting Flags, Idols and Fans, Sherlock and the Grid, Dynamic Inversion, Subarray GCD, Subarray LCM, Lowest Common Ancestor, Copy-Paste, Sum Queries, Chef and Gift, Fombinatorial, Esya HandShake, A wolf, a sheep and cabbage, Tanu and Head-bob, Intersections, Harsh and Biscuits, 2048, Chef and easy problem, Chef and medium problem 2, Avoiding Cameras, XOR with Subset, And Tuples, Physics Class, Chef and Churu, Snakes and Ladders, Mahesh and his lost array, Chef and Apple Trees, Cascading Style Sheets, Hacker, Sereja and GCD, Most Distant Points, Petersen Graph, LARGEST RECTANGLE, Getting to X, Dividing the Students, Parenthesis with Maximum Sum Subarray, Xor Queries, Queries On Tree, Ranka, Challenge your Limits, Candidate walk, Just multiply, Anup at Amrithapuri, Long Drive, Heavy-light Decompositions, Connecting Islands, Queries on the Tree, Devu, his friends and birthday gifts, Query on Tree, Chef and the matrix queries, Maximum Flow in a Special Graph, Painting the Boxes, String Match, Another Fibonacci, Cricket Fever, Devu and most energetic minion, Chefs and Voting for best friend, Path containing K Nodes, Devu, his sister and Rangoli, Aggressive Negotiations, Longest non regular parentheses sub-sequence, Time Travelling Monster, Greedy puppy, Puppy and Palindromes, Puppy and game, Chef and Sets, The Car Trip of Sundar, Churu and lost string, Minimum Maximum, Easy Queries, Many Lists, Misha and Gym, Save the nature, Estimating progress, GCD on Tree, Second LIS, Jimma and Chingam, Line Intersections, Sereja and Pairs, Chef and Maximum Sum Matrices , Floor Distribution, Chef and Tree, Cat and Mouse, Shil and Special Xor Sum, Knapsack on Tree, Vertex Minimization, Disabling Installations, Tiptoe through the tulips, Two Closest, The potato problem, Lets Toss, Profit Maximization, Collateral Damage, Justice League Assemble, Lexcorp Interns, Love for Strings, Akhil Recovers The Lost Array, Evaluate the polynomial, Xortest Path, Alliances, Counting Games, So Close Yet So Far, Digit Longest Increasing Subsequences, Sherlock Counts Ways, Sereja and Ways in the Cube, The Counties, Fusing Weapons , Cookie Flavors, Sum and Xor, Robbery 101, Segment Queries, X-24 and his SUBSET code, Long Sandwich , Nasty Queries, Black Nodes in Subgraphs, AND Graph, Racing Refuels, BiCycles
Contests (612):
October Challenge 2014:
Remy paints the fence, Chef and Ground, Magical Girl and Colored Liquid Potions, DevuLand, Dinosaurs and Laddus
November Challenge 2014:
Chef and Segment Game, Chef and Words, 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
Code Avengers 2014, ABESEC Ghaziabad. :
Lock Unlock, Chef and Power of 2, Jigglypuff and Songs, Easy Palindrome
Code Smart 2014:
The Chef and the Books, The Chef and the field, The Chef and the Triangles, Count of Maximum
January Challenge 2015:
Queries on the String, Sereja and Number Division 2, Chef and A Large Permutation, Sereja and LCM, Chef and Stones, Sereja and Votes, One Dimensional Kingdoms, Gcd Queries
Aarohan 2, 2014:
AP-GP, Dhapu and the Big Sums, Dhapu and Binary Numbers, Dhapu and Hamming Distance, Card Game, Queries, Yalin Dictionary
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 Array, 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, Chef and Cake
June Challenge 2015:
Steady tables, Chef and His Friend, Chef and Memory Limit, Chef and Polygons, Chef and String
July Challenge 2015:
Addition and Multiplication, Maximum Difference Walk, Sereja and Game 2, Bread, MasterChef, Na2a and lucky stone, Chef and Cube, Rohith and Circles
August Challenge 2015:
Way Out, Social Cluster, Gravity Guy, Devu And Churu , Cooking Machine, Aditi and Magic Trick, Chef and insomnia
September Challenge 2015:
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
November Challenge 2015:
Ingredients, Receipt Recovery, Chef and collection of stamps, Eugene and function, Simple Sum, Chef and cakes
December Challenge 2015:
Chef and cinema, Chef and the stones, Plane Division, Oracle Devu and Longest Common Subsequence, Chef and Filters, Chef and Girls, Tanks
IIT Kanpur, Monthly Programming Contest 2015:
Little Chef and the King, Not Palindrome, Let us play with even and odd numbers, Chef and Pattern
RECursion Challenge-I:
Cricket Tournament, Message Typing, Placements, Representative Selection, Boxing Match
Psycoders 2015:
Dhoni and Practice Sessions, Will India Win, Sweet Deal, The Republic Day speech, Chef and Chocolates
Code Brunch:
Parking Slot, Byteland fund raiser, Bob and his girlfriend, N-Prime-Divisors, Visit the cities, Piyush and Bitwise-operation, Rising population
Mindsweepers 2015:
Nitesh and Moving Train, Mr IDC and his Love, Mr IDC and his Message, Codathon, Jovians from Jupiter, Alien Numbers
CodeCraft 2015 Replay:
Count Palindromes, 3 Sorted Arrays, Count Permutations, Count Paths, Laughing Out Loud, Find P-th Number, Police Catching Thief
Code Marathon 2015:
BIRTHDAY PARTY, SUBARRAY GCD, CHEF AND AUCTION, FUN WITH TREES, CHEF AND INCREASING SUBSEQUENCES
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
February Challenge 2016:
Sereja and Two Lines, Chef and Strange Operations, Devu and a light discussion, Rectangles of Love, Chef-Detective, Matrix Maximum Sum
March Challenge 2016:
Sereja and Two Strings 2, Chef And Hungry Birds, Palindromic substrings, Chef and Number Guessing, maximize the sum, Parity tree, Chef And Special Dishes
April Challenge 2016:
Amazing Experiment, Help Watson Escape, Fibonacci Queries, Chef and Ballons, Devu and good strings, Chef And Magical Path, Chef And Coloring, Game of snakes on a grid
June Challenge 2016:
Chef And The Hiring Event, Chef and Rectangle Array, Chef and New Game, Chef and Array and K, Chef And Binary Operation, Chef and Coins Game, Chef and cities, Devu and an Array, Chef and Sad Pairs
July Challenge 2016:
Andrash and Stipendium, Chef and Segments, Chef and Tetris, Chef and special numbers, Chef and Robots Competition, Chefland and Electricity
August Challenge 2016:
Chef and His Garden, Fighting Ebola, Chef and Circle Run, Chef and Chocolate, Chef and Round Run, Funny gnomes, Maximum Grid
September Challenge 2016:
Chef and Friends, Dividing Machine, Chef and Matrix Division, Chef and digits of a number, Faded Palindromes, JosephLand, Chef and calculation
October Challenge 2016:
Sereja and Progressions, Chef and Keyboard, Big Queries, Fenwick Iterations, Chef and Three Dogs, Power Sums, Chef and Two String, Bear and Shuffled Points
November Challenge 2016:
Count Permutations, Friends Meeting, Urban Development, Gift and Chef, Kirito in Memeland, Chef and squares, Sereja and Ways in the Cube, Task for Alexey
December Challenge 2016:
Train Partner, Kth Max Subarray, Chef and Finding Direction, Sereja and Increasing subsequence, Kirito in labyrinth, Edit Distance Revisited, Roses for Alexey, Our Base is Under Attack, Bear and Three Colours
October Cook-Off 2016:
Sherlock and the Ugly Flower, Watson asks Does Permutation Exist, ChefWatson uses Social Network
November Lunchtime 2016:
Chef and his Students, Chef and Square Set, Chef and Balanced Polygons, Tom & Jerry
Procon 2015:
Graph Sum, An Unfair Fair Game, Little Red Riding Hood and Convolutions, Little Red Riding Hood and Candy Factory, Range Queries
Procon Junior 2015:
N Boy and Palingrams, Age of Ultron, Carol and Skrulls, Painting Logs, N Boy and Sum, Wolverine and XOR, Stockholm Encryption
Divide by zero:
Utkarsh and Tree Labeling, Same Old Matrix Problem, Utkarsh and Random Trees, Utkarsh and Sub Array Sum, Shil Loves Exclusive Or, Shil and Rasenshuriken
Alkhwarizm 2016:
Ilya and Sleep disorder, Naruto and Konahamaru, Vasya And Vanya Reunite, Polycarp And Love For Optics, Next Simple Task, Peter the Crazy Maths Teacher, Vasya and Little Bear, Deeply Rooted Tree in Vitaly Garden, Celebrating Brithday, Love for Strings, Vasya Loves Divisors
BIT Mesra Overnight Coding:
Team Tryouts, Dhoni and Milk, King of Cricket, Ashwin and Kumble, The Victory Party
January Challenge 2017:
Capital Movement, Cats and Dogs, Sereja and Circles, Sereja and BOX, Coprime 6-tuples, Chef and Circle, Fantastic Four, Digits Cannot Separate, Reservior, Tourists in Mancunia
February Challenge 2017:
Chef and Yoda, Eugene and big number, Primitive Queries, Interval Game, Sereja and Inversions, Chef and Triangles, Chef and his Best Friend, Chef and His Apartment Dues, Most Frequent Element, Gerrymander
March Challenge 2017:
Cooking Schedule, Completing favorite game, Xenny and Alternating Tasks, Pishty and birthday, Bear and Extra Number, (CH) Bear and Sorted Rows, Bandwidth of a matrix
February Lunchtime 2017:
Bear and House Queries, Bear and Milky Cookies, Bear and Bribing Tree, Bear and Oveflow Points
Past INOI Problems:
Triathlon, Table Sum, Calvins Game, Sequence Land, Highway Bypass, Special Sums, Periodic Strings, Free ticket
April Challenge 2017:
Chef and Digits, (CH) Serejs and Billiards, Bear and Random Grid, Chef and Divisor Tree, Stable market, Heavy-Light Decomposition, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes
May Challenge 2017:
Chef and Sub Array , Gotham PD, Chef and his daily routine, Courses in an university, Blocked websites, Median of adjacent maximum numbers, Chef and Subsequences
June Challenge 2017:
Persistent oak, Chef and Prime Queries, Saboteur (Challenge), Euler Sum, A Good Set, Cloning, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets
July Challenge 2017:
Chef and Sign Sequences, Pishty and tree, Tree Expectancy, Whats in the Name, Servers (Challenge), Calculator , IPC Trainers, Two Coins
August Long Challenge 2017:
Chef and Rainbow Array, Chef And Fibonacci Array, Chef and Mover, Hill Jumping, Walks on the binary tree, Palindromic Game, Mathison and the Data Warehouse (Challenge), Greedy Candidates, Strings and Graphs, Flower Pots
September Challenge 2017:
Sereja and Commands, Sereja and Functions (Challenge), Chef and Pick Digit, Minimum Good Permutation, Sum of Cubes, Querying on a Grid, Weasel does Xor on Tree, Weasel finds Staircase, Fill The Matrix, Little Chef and Sums
October Challenge 2017:
Chef and Magic Arrays, Chef and a great voluntary Program, Chef and Cycled Cycles, Shooting on the array, Max Mex, Chef and Horcrux, Counter Test For CHEFSUM, A Balanced Contest, (Challenge) Connecting computers, Lucky Edge
March Cook-Off 2017:
Rainbow Graph, Meeting location, Yet Another Card Game, Increasing Xor Sequence, Safe Robot
July Cook-Off 2017:
Chang and Bitwise OR, Chang and the Perfect Function, Chang and Perfect Quadruples, Bipartite Graph from Trees
Alkhwarizm 2017 (Rated):
Logan and his XOR debacle, Charles and the BRUTAL subsequences, Laura and her QUERIES On Tree, Deadpool and his COOLEST Problem Ever, Professor X and Grouping of Numbers, Logan and DIGIT IMMUNE numbers
Learning Paths (0):
None
Practice Paths (0):
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