Rahin Vadsariya

Practice: 

Discount on crackers, Chef and Round Run, Rectangle, Campus Drive, Chef and Easy Problem, Mussadi lal and stairs, Magician versus Chef, Chef and Eid, Chef and Serves, Qualifying to Pre-Elimination, Chef and Interactive Contests, Camp Or Not, Print Pattern, Age Calculator, Rooks, Chef and Secret Ingredients, Appy and Contest, Deputy Chef, Chef and Number Game, Average Number, Meera and Her Closet, Maximum Remaining, Testing Robot, Danny Wants To Know, CHEF AND THE DRUNKARD, Matches, Chef and Good Subsequences, Attendance, Chain Reaction, CV, Hard Sequence, Large Gcd (Keteki), Playing with Strings, Up & Down Cipher, Chef and Pepperoni Pizza, Precious Pots of LPU, Chef Drinks Coke, Playing with Matches, Straight lines, Cakewalk, Divide and Rule, Bharath and his strings, Counting Inversions Revisited, Beautiful View, Magnificient Desolation, Safe Robots, Chef and Rotation, Chef Chick, Exam Cheating, Aabra Ka Daabra, Eddy Wants Admission, Reach The Temple, BOX INSIDE ANOTHER BOX, At the Gates, Another Birthday Present!, SIMPLE MODIFICATION, Queries with Bags, Hanuman and Tree, Convert the String, The king of snakes, Cherry and Bits, Cosmic Temple, Perfect Trees, Binod And Subarray, MonkeyPower, Chef and Subtree MEXs, Good Array, HAPPY NEW YEAR, TWO SACKS OF HAPPINESS, City Travelling, Chef and String Conversion, Chef and Travel , A Special Tree, Total Correct Submissions, Girlfriend Problem, Double Burgers, Meet In The Median, Sardar and GCD, Chef and Magical Steps, Drunk Alcoholic, Cool Name, Fixed Points, Silent People, Clever Theft, Maximum Trio, Romantic Reversals, Akash and Grid, And Or Union, Merging Binary Strings

Past INOI Problems: 

Department Strengths

June Challenge 2019 Division 2: 

Road Signs, Chef and Proxy, Guddu on a Date

June Cook-Off 2019 Division 2: 

Multiple Choice Exam, Eat Twice

June Lunchtime 2019 Division 2: 

Ping Paja Pong

July Challenge 2019 Division 2: 

Parity Again, Minimum and Maximum, Chef and Mean

July Lunchtime 2019 Division 2: 

Easy Math

August Challenge 2019 Division 2: 

Dilemma, Football, Distribute Apples, Zombie and the Caves

September Challenge 2019 Division 2: 

Easy Fibonacci, Chef and Interesting Subsequences

October Challenge 2019 Division 2: 

Array Modification, Operations on a Matrix, Phone Prices

October Lunchtime 2019 Division 2: 

Khaled in HIT, Counting Inversions Revisited

December Challenge 2019 Division 2: 

Plus Multiply, Binary XOR, Easy Subsequence Selection, That Is My Score!, Addition

February Challenge 2020 Division 2: 

No Change Required, The Theatre Problem, School of Geometry, Hard Cash, (Challenge) Raisins, Long Contest and Cook Off Overlaps

March Challenge 2020 Division 2: 

XOR Engine, Ada Bishop 2, Pintu and Fruits

Fall for Code 1.0: 

Walk on Mars

Keteki Power Match: 

Common Words (Keteki)

ProCon Junior: 

Walter White and His Crystals

InfInITy 2k19: 

The Fallen Knight

Codex 19.0: 

Ashwin and Candy

ICPC Asia-Amritapuri Onsite Replay Contest 2019: 

Usain Bolt vs Tiger, Sufficiently different string

Aarambh 2020: 

Straight lines, Xor Segment, Jolites

Code Wars 1.0: 

An AC for you

Encoding January'20: 

Chefu and Tiles, Triangle Love , Chef and Candies

CodeJam Quark 2020: 

Popping Balloons, Distinct Sums

Code Invicta: 

Divide them all

DSA Learning Series - Contest 1: 

Multiple of 3

DSA Learning Series - Week 2: 

Compilers and parsers, Penalty Shoot-Out II

Cook the Code: 

Tricky Remainder, Mystric Balls

July Challenge 2020 Division 1: 

Chefina and Swaps, Missing a Point, Doctor Chef

June Lunchtime 2020 Division 1: 

Maximum AND, Gold Mining

Encoding April'20: 

Chef and the Swimming Pool, Chef learns Statistics, Greedy DD, Shortest Palindromic Substring

October Challenge 2020 Division 1: 

Positive AND, Replace for X

January Challenge 2021 Division 2: 

Fair Elections

December Lunchtime 2020 Division 1 (Unrated): 

Three Letters, One Zero Swaps

January Lunchtime 2021 Division 2 (Unrated): 

Dreams of Divisibility, Binary Subsequence, Even Differences, Even Sum

November Cook-Off 2020 Division 1: 

Flip the String, Chef and IPC Certificates

DSA Learning Series - Contest 6: 

Little Chef and Sums

DSA Learning Series - Contest 7: 

Count K-Primes, Chef and Frogs, Count Subarrays, Chef and Good Subsequences

Programming Contest #1 (Chapter 'Ramayan'): 

Laxman and Maths, Raavan and Sub-Array, Lord Ram and XorOrXorOr Power

DSA Learning Series - Contest 8: 

Fire Escape Routes, Discount on crackers, Department Strengths

Project Code 1.0: 

More Cake, Punish Alex, Lord of the Rings, Love Polygons

Encoding August'20: 

Chef And His House , Angry Delta, Delta and Jumps, Chef Loves Cakes, Chef Learns BST

Any Body Can Code: 

Password Hacking

CodeFusion 20.9: 

INCREASE YOUR SKILLS, JUST FIND IT

CODEZEN 2.0: 

Alien New Challenge, Neha and Special Number, Zenny and Simple Sum, Sports Championship

Coding for Fun: 

FRIENDS PARTY, Save Parrots, Equal Chocolates, Even Odd

TECHWEED: 

Guruji ka Pyaar, BINOD

Codex 2.0: 

Best Friends, Bus Routes , Potholes, Justice League

The Algo Way 1.0: 

The Largest Palindrome, Mia and the Breakfast Diner, Persons in Lift, Ring a Ring o Roses

LogiCode: 

MATRIXMIN, FIZZA and MAGICIAN

iiitv.str(): 

Agents on mission, Tricky Path, Chef And Dogs, Factors and Function

APOC 2.0 Round 1: 

HALLOWEEN EVE

Educational Competitive Programming Contest (ECPC 1.0): 

Tree and unwanted leaves, Brute force, Constructive, Cake and Precision

InfInITy 2k20 Division 1 (Unrated): 

Empire Business

CodeKombat Wildcard Round (CodeFusion 20.11): 

SOLVE IT!!

CodeSprint: 

PRO BARGAINER, 3 Friends and GOA trip, Stock Scam, Find index number

push_back(0): 

ODD IT IS, Decode Pattern, Occurrence Game

push_back(1): 

IGNORE IT, DECODE IT, CRACK IT, FIND IT

Code-o-Fiesta: 

Finding the Medius

UWCOI 2021 (Rated for all): 

Array Swaps, Hidden Numbers

Code Starter: 

Subtraction, Find the imposter, Electric Circuit, Theatre Square

Breaking Bugs: 

Find The Number

Inferno Numero IIT BHU: 

Jewel Mine, CHRISTMAS EVE, Couple In Ruiz Land

CodeMate Round 1: 

Digit Last, El Professor, Zebra Jungle

CODEOVERFLOW #1.4: 

NO KARSHI, Miser gifts his date, Navnit And Friends

CodeMate: 

Protect Computers , BUY CHOCOLATES, ROHIT LOVES PRIMES, VALENTINES DAY

Chef Dynasty: 

Chef in Dilemma, Defective Item

Bit by Bit The Coding Culture: 

Republic Day Parade

Clash Wildcard: 

Oliver, Money Heist

Beginner Special 20: 

Easy Dissy, Exam Time, Uchiha Clan

Republic of Coders: 

My XOR, Triplet Groups, Road Trip, Diffuse, Plus Minus Game, Smallest Absolute Difference, Can you find prime pattern

AC Run: 

Yet Another GCD Problem

February Lunchtime 2021 Division 2: 

Palpal Strings, Coprime Range

Break-The-Server (Unrated): 

PCM Dilemma, Memcached Service, Chef and Laddus For Children, Students, heights and their IQs

ACM CodeFest 2.0: 

Play With Strings, Minimum Pair

International Coding Marathon 2021 Division 2 (Rated): 

Suffix Sort, Lucky Boundaries

April Cook-Off 2021 Division 2: 

Tree Distances, OR of ANDs, Chocolate Monger

April Lunchtime 2021 Division 2: 

Chef in Heaven , Bench Press, Array Rotation

SPYBITS IIT BHU Division 2 (Rated): 

B - Valentine Couples, D - Pilgrims Destination, A - Save Water Save Life

Spider AlgoCup: 

Hope you get it, Check The Constraints

May Cook-Off 2021 Division 2: 

The Last Problem, Chef and Subarrays

May Lunchtime 2021 Division 2: 

Charges, Tom And Jerry 1, Total Components

June Cook-Off 2021 Division 2: 

The Wave

June Lunchtime 2021 Division 2: 

From Rational to Binary, False Number, Unpleasant Ones

Carnival Finale: 

B for Bitwise, Find Least immune, Best Enemies, L for LCM, N for Number

CodeChef Starters 6 Division 2 (Unrated): 

Joker and Batman, Even tuples, Three Dices, Cricket Ranking

AlgoManiac - Code For Future Division 2 (Unrated): 

Say No To Drugs, The Old Saint And Three Questions

September Cook-Off 2021 Division 2: 

Zebra Crossing, Fake Swaps, Adjacency Hatred

SnackDown 2021 - Online Qualifiers: 

Lucky Number, Maximum Number Of Distinct Elements

CodeChef Starters 11 Division 2 (Rated): 

Positive Spewing, The Grid Fill Problem, Obtain the Sum

CodeChef Starters 13 Division 2 (Rated): 

Chef in Vaccination Queue, Maximum Light Up, Magical Doors

September Lunchtime 2021 Division 2: 

Prefix Sums, Yet another SOD problem

CodeChef Starters 15 Division 2 (Rated): 

Division , Minimise the Size, Nice Pairs

October Cook-Off 2021 Division 2: 

Odd Sum, 01 Subsequence

October Lunchtime 2021 Division 2: 

Chef and Water Car, Exactly N plus 1 Values

SnackDown 2021 - Online Round 1A: 

Round Robin Ranks , Dance Moves, Equal Beauty, Min Max LCM

Code Senso Division 2 (Rated): 

Maximum Damage, Games of Wasseypur

CP WORLD: 

Even Chairs, Reach Zero, Maximum Binary String

CodeChef Starters 17 Division 2 (Rated): 

Binary Inversion, GCD of Prefixes, Partition It, New Piece

FizzBuzz Division 2 (Rated): 

Magical Planks, Clean The Sequence, Can_Reach

CodeChef Starters 22 Division 2 (Rated): 

An Interesting Sequence, Even Subset Xor, Equal LIS

Infinity 2k21 Division 2 (Rated): 

Marbles

Code Drive Division 2 (Rated): 

Again XOR problem, Maximum Factors Problem, Count Number of Peaks

January Cook-Off 2022 Division 2: 

Palindromes Not Allowed, Mean Maximization

CodeChef Starters 27 Division 2 (Rated): 

Distinct Binary Strings, Non Coprime Neighbours, The product mystery

February Lunchtime 2022 Division 2: 

Parallel Processing

CodeChef Starters 28 Division 2 (Rated): 

Permutation Xority, Count the Holidays

CodeChef Starters 29 Division 2 (Rated): 

String protocol, Plusle and Minun on Array, Decomposition Reaction

April Cook-Off 2022 Division 2: 

Sticks and Rectangles

CodeChef Starters 33 Division 2 (Rated): 

Distinct Dilemma, Broken Life, Non Adjacent Flips, Make Them Equal

Starters 39 Division 2 (Rated): 

Compress the Video, Closest Vowels

June Lunchtime 2022 Division 2 (Rated): 

Zero Ones Equal One Zeros, The Lost Array, Max Shift After XOR, XOR Times 2 Is Sum, Equal by XORing

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