Aviroop Pal

Practice: 

Prime Generator, Transform the Expression, The Next Palindrome, Factorial, Small factorials, Marbles, Mixtures, Bytelandian gold coins, Ambiguous Permutations, Enormous Input Test, Sums in a Triangle, Turbo Sort, GCD2, ATM, Life, the Universe, and Everything, A Very Easy Problem!, Nuclear Reactors, The Lead Game, Permutation Cycles, Discrepancies in the Voters List, Array Transform, Yet Another Number Game, Flipping Coins, Multiples of 3, Cleaning Up, Decreasing String, Cutting Recipes, Number Game Revisited, Holes in the text, Three Way Communications, Open the Dragon Scroll, Ciel and A-B Problem, Lucky Long, Double Strings, Little Elephant and Alcohol, Little Elephant and Bombs, Arranging Cup-cakes, Music & Lyrics, Closing the Tweets, Racing Horses, Ciel and Receipt, Coin Flip, Carvans, Tourist Translations, Little Elephant and Permutations, Buying Sweets, Arithmetic Progressions, Expected Greatest Common Divisor, Root of the Problem, Packaging Cupcakes, Snape and Ladder, The Ball And Cups, Maximum Weight Difference, Your Name is Mine, Lapindromes, Furik and Rubik and Sub Array, Subtraction Game 1, Chopsticks, Number of Factors, Sereja and Graph, Prime Distance On Tree, Splitting Candies, Pairwise AND sum, Chef and The Right Triangles, Uncle Johny, Number Mirror, Lucy and Question Marks, Magic Pairs, Please like me, Chef and Feedback, Farmer Feb, Chef and Functions, Chef and Remissness, XOR Minimization, Chef-jumping, Little Elephant and T-Shirts, Dividing Stamps, Chef and Subarray, Little Chefs Team, Divide the Cake, Guessing Game, Game of Numbers, Coprime Triples, The Smallest Pair, And Operation, Copy-Paste, Tanu and Head-bob, Chef and medium problem 2, Walk on the Axis, XOR with Subset, Chef and Churu, Mangalyaan-2, Covering Sets, Chef and Keyboard, Sereja and Votes, One Dimensional Kingdoms, Xor Queries, Fit Squares in Triangle, Lucky Four, Andrash and Stipendium, Another Fibonacci, Ankit, Srijan and a game of stone piles, Add Two Numbers, Find Remainder, First and Last Digit, Smallest Numbers of Notes, Sum of Digits, Reverse The Number, Helping Chef, Valid Triangles, GCD and LCM, Second Largest, Small Factorial, Primality Test, Finding Square Roots, The Block Game, Chef and Bitwise OR Operation, Puppy and GCD, Jump mission, Simple Sum, Chef and digits of a number, Strange Functions, Faded Palindromes, Chef and Socks, Chef and Tic-Tac-Toe, Chef and Three Dogs, Cats and Dogs, Evaluate the polynomial, VCake, Range Minimum Queries , Coloring A Tree, Chef and Bike, Break the tree, Watson asks Does Permutation Exist, Sherlock Counts Ways, ChefWatson uses Social Network, Help Lost Robot!, Beautiful Arrays, Watson and Digit Sums, Colorful Grids, To add or to multiply game, Chef and Subset, Chef and Subarrays, Optimal Partition, Tim and BSTs, Currency trouble, Mr X and Challenge, (CH) Bear and Sorted Rows, Bear and Ladder, Bear and Species, Pishty and tree, Gotham PD, Little Chef and Cake, Chang and Perfect Quadruples, Bipartite Graph from Trees, Find the Maximum Value, Good Pairs, Mathison and the Dynamo shuffle, Matrix and Chef, Mathison and pangrams, Subsequence Equality, Vertex Cover, Four Friends, Chef Counts Semi-BSTs, Simplify the Square Root, Queries with GCD, Vamsi the MasterMind, Chef and odd queries, (Challenge) Biased Committee, Series Sum, High Interview, Partitions, Difficult Choice, Best Cake Ever, Masha and Minions, Sonya and Segments, Apun Hi Bhagwan Hai !, Learning Dishes, A Family of Bipartite Graphs, Game of numbers, Yet another shortest path problem, Bitsetbaba and Power Grid, Binary XOR, Binomial Fever, C - Recover Array, Direct Segments, Maximize Diversity of an Array, Joined Subarrays on Tree, Dot Time, Triangle Query, Jumping Fever, Danya and Different Values, Venkatesh is bored, Drawing, Kuroni and the Cowsheds, Maximise Subsequence Value

November Challenge 2016: 

Count Permutations, Task for Alexey

December Challenge 2016: 

Train Partner

Past ZCO Problems: 

Matched Brackets, Tournament, Chewing, Video Game, SUPW, Smart Phone, IPL, Variation, Covering

January Challenge 2017: 

Capital Movement, Cats and Dogs, Reservior, Tourists in Mancunia

February Challenge 2017: 

Eugene and big number, Chef and Triangles, Chef and His Apartment Dues, Gerrymander

March Challenge 2017: 

Xenny and Alternating Tasks, Pishty and birthday, Bear and Extra Number, (CH) Bear and Sorted Rows, Bandwidth of a matrix

Past INOI Problems: 

Free ticket

May Challenge 2017: 

Chef and Sub Array , Long Sandwich , Gotham PD, Chef and his daily routine, Courses in an university, Blocked websites, Median of adjacent maximum numbers, Chef and Subsequences

June Challenge 2017: 

Chef and Prime Queries, Euler Sum, A Good Set, 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, Calculator , IPC Trainers, Two Coins

September Challenge 2017: 

Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, 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, Counter Test For CHEFSUM, A Balanced Contest, (Challenge) Connecting computers

December Challenge 2017: 

Chef and Universe, Total Diamonds, Chef And his Cake, Chef, Leonardo And Queries, Chef And Easy Xor Queries, Penalty Shoot-out, Red and blue points, Chef and Hamming Distance of arrays

July Cook-Off 2017: 

Chang and Bitwise OR, Chang and the Perfect Function

August Cook-Off 2017: 

Real obtuse, From heaven to earth

December Lunchtime 2017: 

Days in Month, Strange Function

International Coding League (Rated): 

Cards Game, Worst Case Analysis

January Challenge 2018: 

Killing Monsters, K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers

LoC Aug 2017: 

Princess and Beauty , Tree GCD , Poo Poo , Always Late

January Lunchtime 2018: 

Chef and Game with Sequence, Chef and Escaping from the Labyrinth

February Challenge 2018: 

Broken Clock, Lucas Theorem, Chef And Land Labeling, Chef And His Characters, Chef And The Patents, Akanksha and End of Semester, Chef and odd queries, Points Inside A Polygon, Car-pal Tunnel, (Challenge) Biased Committee, Permutation and Palindrome

International Coding League (Rated): 

Matrix Game, Stingy Strings, Maze Love

March Challenge 2018 DIV 1: 

Pishty and Triangles, Chef and Easy Problem, Chef and Gcd Queries, Mix the Colors, Minions and Voting

March Cook-off 2018 Division 1: 

Chef Goes to the Cinema, Chef Restores a Matrix

June Cook-Off 2018 Division 1: 

Good Permutations

July Cook-Off 2018 Division 1: 

OR Matrix, Chef and Queries on a Tree, Chef and GCD Game

September Mega Cook-Off 2018 Division 1: 

Make a Permutation

October Mega Cook-Off 2018 Division 1: 

Binary Nim 2, Pumping Water

May Lunchtime 2018 Division 2: 

Trace of Matrix, Count Substrings, Shifted Palindrome, Weak in the Middle, Maximum Plus

May Challenge 2018 Division 2: 

S-T Mincut, Mighty Friend, Change the Signs, Minimum Deletions, Xor Again, Fake Binary Search, Dibs on Fibs

June Challenge 2018 Division 1: 

Two Flowers, Vision, Ways to Work, Expected Buildings

July Challenge 2018 Division 1: 

Pizza Delivery, Picking Fruit for Chefs, Reach Equilibrium, No Minimum No Maximum, Gears

October Challenge 2018 Division 1: 

Appy and Balloons , Beautiful Bricks, Minimize Digitsum, Chef and Surprise Chessboard

Samsung Hiring Challenge: 

The Largest Good Subarray, Matrix Counting, Maximum Partitioning of Array

Encoding August '18: 

Playing With Numbers, Chef and Sequence

ICPC Asia: Kolkata-Kanpur Onsite Replay Contest 2018: 

Yet another shortest path problem

January Challenge 2019 Division 1: 

Yet Another Problem About Sequences, Different Neighbours, Partition the Graph, Distinct Pairs, Party, A Pizza Slice

January Lunchtime 2019 Division 1: 

Distances, Wanderer, Rooks

February Challenge 2019 Division 1: 

Manhattan Rectangle, Guess It Right, Chef and Secret Ingredients, Xor Decomposition, Yet Another Tree Problem, (Challenge) Chef with Orchestra in the Kitchen, Art of Balance, Maximize the Tax

March Challenge 2019 Division 1: 

Chef and Soccer, Cheating on Queue, Perfect Tree Problem, Treasure Hunt, Yet Again a Subarray Problem, Matchable Permutations, (Challenge) Interleaving Strings

April Challenge 2019 Division 1: 

Offer for Chef, Kira Loves Palindromes, Mininum XOR over Tree, Playing with Numbers, Subtree Removal

ICM Technex 2019: 

Pika-Pika, Array got some moves, Bob and his strict mom

September Challenge 2019 Division 1: 

Biladerim Icin, Fuzzy Linear Combinations, Expected GCD, Doofish Set, Dodgers, Power Sum, Chef Designed a Network, (Challenge) Sebi and CPU Design

International Coding League 2019 (Rated for Division 2): 

Helping Dustin

February Challenge 2020 Division 1: 

Chef and Railway Stations, No Change Required

May Cook-Off 2020 Division 1: 

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

March Lunchtime 2020 Division 1 (Unrated): 

Maximize LCM, Strip in a Tree!

April Lunchtime 2020 Division 1: 

Xor Jar Muluk Tar, Positive Mex

June Challenge 2020 Division 1: 

The Tom and Jerry Game!, Operations on a Tuple, The Delicious Cake, Convenient Airports, Guessing Game, Perfect Partitions, Covid Sampling (Challenge), Danya and Different Values

July Cook-Off 2020 Division 1: 

The In-XOR-able Task, Even-tual Reduction, OR-thodox Distinction, Path-etic Products

July Lunchtime 2020 Division 1: 

Profitable Paths 2, Golomb Sequence, Coloured Pairings, Binary Concatenation , Pairs of Pairs

CodeJunk: 

Zaikia and sticks, Uttu at war with Gangwar

Coders' Legacy (Rated for all): 

Chef vs Doof, Doof on Cartesian, Doof fires Brackets, Jeremy gets a gift, Unique Substring

September Cook-Off 2021 Division 1: 

Chess Kings Chasing Game, Chef and Pairwise Distances, Half Sequence, Fake Swaps

SnackDown 2021 - Online Qualifiers: 

Prefix as a Substring 2, Lucky Number, Maximum Number Of Distinct Elements, Minimise Difference

SnackDown 2021 - Online Round 1A: 

Yet Another Flipping Problem, Round Robin Ranks , Dance Moves, Equal Beauty, Lazy Machine, Min Max LCM

SnackDown 2021 - Online Pre-Elimination: 

Non-Decreasing Subsequence of size K, Product Pain, Guests like slippers

Problems Authored (3)

Problems Tested (0)

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Editorials Contributed (2)