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Programming and DSA

Learn to think like a programmer. Develop your problem-solving skills with essential data structures and algorithms.

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Programming and DSA

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Practice Compete Compiler
Home » Kaustubh Miglani
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Kaustubh Miglani

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  • 7★kira_1234
  •   India
  • Student
  • Indian Institute of Technology Madras
  • No Active Plan. View Details

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No. of Contests Participated: 55
2548 (-4)RatingProvisional
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Starters 181 (Rated for all)(2025-04-09 22:30:00)
Global Rank:   42
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Starters 69 Division 1 (Rated till 6-stars)(2022-12-20 00:00:00)
Global Rank:   65
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Practice Paths (2)

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Practice for ZCO and INOI

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Contests (55)

December Lunchtime 2019 Division 2

Stupid Machine, Check Algorithm, Guess the number

February Challenge 2020 Division 2

No Change Required, The Theatre Problem, School of Geometry, Hard Cash

March Challenge 2020 Division 2

XOR Engine, Ada Bishop 2, Pintu and Fruits

April Challenge 2020 Division 2

Strange Number, Squared Subsequences, Unit GCD, Sell All the Cars, Leaked Answers (Challenge), COVID Pandemic and Long Queue

May Challenge 2020 Division 1

Triple Sort, Coronavirus Spread, Isolation Centers

January Cook-Off 2020 Division 2

Chef Chick, Exam Cheating

March Cook-Off 2020 Division 2

Find Your Gift

April Cook-Off 2020 Division 2

Matrix Decomposition, Lift Requests, Simple Operations

May Cook-Off 2020 Division 1

Chef and Recipe, Chef, Chefina and Their Friendship, Roads in Chefland

February Lunchtime 2020 Division 2

At the Gates

March Lunchtime 2020 Division 2 (Unrated)

Chef Swaps Digits, Good Prefix

April Lunchtime 2020 Division 1

Another Birthday Present!, Positive Mex

May Lunchtime 2020 Division 1

Convert the String

June Challenge 2020 Division 1

Even Matrix, The Tom and Jerry Game!, Operations on a Tuple, Convenient Airports, Chef and Icecream, Covid Sampling (Challenge), Chef and String, Chef and Price Control

July Challenge 2020 Division 1

Ada King, Chefina and Swaps, Chef and Dragon Dens, Missing a Point, Doctor Chef, Chef and Card Game, Chef and Strings

August Challenge 2020 Division 1

Insanely Hard School Exams, Subsequence Frequency Counting, Chefina and Strange Tree, Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess, Smallest KMP, Chef and Wedding Arrangements

September Challenge 2020 Division 1

Chefina and Swap, A Problem on Sticks, Chef and Trump Cards, Find XOR, Rotate the Polyline, Divide Candies, Ada Matrix, Coronavirus Spread 2

July Cook-Off 2020 Division 1

What Is This, a Crossover Episode, Even-tual Reduction, OR-thodox Distinction, Path-etic Products

July Lunchtime 2020 Division 1

Golomb Sequence, Chef and Steps, Binary Concatenation

August Cook-Off 2020 Division 1

Polygon Relationship

August Lunchtime 2020 Division 1

Game on a Strip, Counting Graphs, Alien Invasion

June Cook-Off 2020 Division 1

Cache Hits, Per Capita Income, Max Mex, Checkpoints

June Lunchtime 2020 Division 1

Maximum AND

October Challenge 2020 Division 1

Inversions, Positive AND, Replace for X, D-Dimensional MST, Compress all Subsegments, Adding Squares, Covid Run, Chef and Easy Queries

December Lunchtime 2020 Division 1 (Unrated)

Even Sequence, Three Letters, One Zero Swaps

October Cook-Off 2020 Division 1

Path-etic Sums, Yet Another Crossover Episode

November Cook-Off 2020 Division 1

Flip the String, Chef and IPC Certificates, Graph Construction, Hiring Workers

October Lunchtime 2020 Division 1

Chef Likes Good Sequences, Chef Is Just Throwing Random Words, Cute Chef Gift

November Lunchtime 2020 Division 1

Gasoline, Fractions

Coders' Legacy (Rated for all)

Chef vs Doof, Doof on Cartesian, Doof fires Brackets

September Cook-Off 2020 Division 1

Maximise Subsequence Value, Minimum Insertions

September Lunchtime 2020 Division 1

GCD operations, Root the Tree, Robot Detector, Watermelon

Code Ensemble (Rated for Division 2)

Cherry and Bits, Priya and AND, Traversing Trees, Help Martha

UWCOI 2021 (Rated for all)

Organisation, Array Swaps, Efficient Delivery, Hidden Numbers, Binary Puzzle

CodeChef Div 3 Rated Contest 2021 Division 1 (Unrated)

Maximum Size Hollow Square, Rectangle, Chef and Patients, Total Overlap, Body Mass Index, Total Score

International Coding Marathon 2021 Division 1 (Unrated)

Suffix Sort, Infinite polygons, Stack Of Rectangles, Team Divisions, Lucky Boundaries

May Challenge 2021 Division 1 (Unrated)

Xor Equality, Tic Tac Toe, Golf, Solubility

July Challenge 2021 Division 1 (Unrated)

XxOoRr, Chef vs Bharat, Optimal Denomination, Maximum Production, Chef and Pairs, Relativity, Dakimakura Distribition, K Path Query

AlgoManiac - Code For Future Division 1 (Unrated)

Planetary Path, Two Shades Of A Tree, Say No To Drugs, The Rumbling, The Old Saint And Three Questions, Meet In The Median

September Challenge 2021 Division 1 (Unrated)

XOR Equal, Shuffling Parities, Minimize Digit Sum, Treasure Hunt, 2-D Point Meeting, Airline Restrictions, Travel Pass, Covaxin vs Covishield, Minimum Digit Sum 2

SnackDown 2021 - Online Qualifiers

Lucky Number, Maximum Number Of Distinct Elements, Minimise Difference

CodeChef Starters 12 Division 1 (Unrated)

K - balanced string, Good Weather, Make it Divisible, Another Shortest Paths Problem, Maximum Points, The Minimum Game

CodeChef Starters 14 Division 1 (Unrated)

Odd GCD, Task Times, Diagonal movement, FIXFIX, Counting Tuples, RCB and Playoffs

CodeChef Starters 16 Division 1 (Unrated)

Professor And Directions, Chef And Salary Pay, K - Magical String, Chef and Magical Steps, Subarray Sum, Pass or Fail

SnackDown 2021 - Online Round 1A

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

SnackDown 2021 - Online Round 1B

Yet Another Flipping Problem 2, Insider Subsequences, Queens Placement , Largest Laddu, Help Nishant

SnackDown 2021 - Online Pre-Elimination

Non-Decreasing Subsequence of size K, Product Pain

CodeChef Starters 20 Division 1 (Unrated)

Finding Pairs, Stable Sequence, Weird Values, Genes, Brutal-Xors, Chef and Pal

FizzBuzz Division 1 (Unrated)

Magical Planks, Clean The Sequence, Lucky Ali, Substring Minimum Function, Kingdom Attack

November Lunchtime 2021 Division 1

Min-Max Rotations, Permutation Pairs, Subarray Jumps

December Challenge 2021 Division 1 (Unrated)

Increasing String , Yet Another Tree Problem, Check Mate, Valleys and Hills, Rock Paper Scissors, Pyramid Traversal, List of Lists, Min Manhattan Distance, Utkarsh and Placement tests, Squares Counting

SnackDown 2021 - Elimination Parallel (Rated for Div 1)

Yet another subarray problem, Remove Element, Balance Zeroes and Ones, Car Range, Graduate Work Matters, Sorting Segments

December Lunchtime 2021 Division 1

Optimal Sorting, Romantic Reversals, Sleep Technique

CodeChef Starters 21 Division 1 (Unrated)

ChefWM, And Or Union, Mean equals Median, The Melancholy of Problem Setter

Infinity 2k21 Division 1 (Unrated)

Marbles, Ddakji, Tug of War, Escape Plan, Hopscotch, Dalgona Treat

January Long 2022 - I, Division 1 (Unrated)

Keplers Law, Sequence Master, Prime in a binary string, Retrieve back the Array, Covid Spread, Chef and Riffles

January Cook-Off 2022 Division 1

Subsegment Divisibility , Merged LIS, Boring Trip, Prime Graph, Erase All But One

CodeChef Starters 23 Division 1 (Unrated)

Average of Three, Chef and Profits, Subarray Mex, Maximise the Minimum, Maximising Vacations, Non Zero Subarray Xor

January Lunchtime 2022 Division 1

Permutation XOR Sum

CodeChef Starters 24 Division 1 (Unrated)

Anti Palindrome, Palindrome Love, Special String, Divisors and Reciprocals

February Long 2022 - I, Division 1 (Unrated)

Digit Multiplication By K, Binary Base Basics, Bitwise Blend, N Queens Puzzle Solved !, Chef and the Hair Salon

CodeChef Starters 25 Division 1 (Unrated)

Building Towers, Equal MEX, K Distinct Array

February Cook-Off 2022 Division 1

Xor Becoming Uncanny, Perfect Permutation, PerMEXuation , Mango Market

CodeChef Starters 26 Division 1 (Unrated)

Stone Game, Array Division, Careless Chef, Car or Bike, Valentine is Coming, Count the Notebooks, Hostel Room, Control the Pollution

CodeChef Starters 31 Division 1 (Unrated)

Pile Partition, XOR and AND, Mexy Array, The Unchanging OR

CodeChef Starters 32 Division 1 (Unrated)

Maximize the Minimum, LR Shirts, Finding Shoes, Training Plans, Two Merchants, Flip Sorting

May Long Two 2022 Division 1 (Unrated)

Subarray Weight, Practice makes us perfect, Subsequence-Numbers Divisible by 7, Not Tree Again!, Xor Palindrome, Subarrays with length, Score High, Total Prize Money, Make them Zero, Degree of Polynomial

June Cook-Off 2022 Division 1 (Rated)

Throw and Take, Simple XOR, Prefix Suffix Distinct, Split AND Sum

Starters 49 Division 1 (Unrated)

Students-Far From Hostel, Split The String, High Frequency, Monks

Starters 51 Division 1 (Unrated)

Chef & Cook Game, Differentiation, Prefix Suffix And Or, Adjacent Xors, Split N, Copy and Paste, Different Medians

August Long 2022 Division 1 (Unrated)

Angled Flip, Tree of Trees, XOR with smallest element, Hello Equation

August Lunchtime 2022 Division 1 (Rated)

Sort the Array, Tree Coloring, Subtract 12 Operation

Starters 53 Division 1 (Unrated)

Black&White Ring Game, Make A and B equal, Queen Blocks

Starters 55 Division 1 (Unrated)

Disgust Minimization, Non Zero Xor, Ball Sequence, Balls and Boxes, OR Tuples

Starters 58 Division 1 (Unrated)

Equivalent Numbers, Good Arrays, Add to Subsequence

Starters 60 Division 1 (Unrated)

Distinct Numbers, Expert Setter, Maximum Sum, Red Green Grids, Yet Another Palindrome Problem, Tax in Chefland, Tri XOR, Paper Cutting, Palindrome Flipping, Card Removal

Starters 62 Division 1 (Rated for 5 & 6 stars)

Get the Segment, Joint XOR, Disjoint XOR, Sorted Substrings, Make Multiple, Pythagorean Pair

Starters 63 Division 1 (Rated for 5 & 6 stars)

Distinct Neighbours , Maximize 1s, Count Partitions , GCD Sort, Make Length 1, Minimum Absolute Score, Greedy Grid Moves

Starters 65 Division 1 (Rated for 5 & 6 stars)

Nahaane Jaa, Paisa Double, Binod, Gormint Aunty, Potato to Gold

Starters 66 Division 1 (Rated till 5-stars)

Sorting the Binary String, Good Binary Strings, Palindrome by Splitting, Connect All Cities, Palindrome In Making, Chef and Spice Grid, Minimum value of special tables

Starters 68 Division 1 (Rated till 5-stars)

Guess All, Boring String, Restore the Permutation, XOR Product, Interesting Array, Make Money

Starters 69 Division 1 (Rated till 6-stars)

Distinct Sequence, Longest Subarray

Starters 70 Division 1 (Rated till 6-stars)

X AND Y Tree, Two Counters, Prime Reversal, Frequency Array Retrieval

Starters 71 Division 1 (Unrated)

Pet Store, Flip the Prefix, Unique Mode, Instagram, Snapchat, Expected Sum, Perfect Trio, Maximizing LCS, Smallest Difference

Starters 72 Division 1 (Rated till 5-Stars)

N Triplets, Good Sequence, No sequence, Base or Bias, XOR Tree

Starters 73 Division 1 (Rated till 6-Stars)

Minimum OR Path, Find an integer, Consecutive Xor, First To Last, Hamiltonian Tree, Elevators

Starters 74 Division 1 (Rated till 6-Stars)

Candies, Maximum Xor Sum, Distinct Values, Power Tree, Lcm hates Gcd, Medicine Strength, Minimal Inversions

Starters 75 Division 1 (Rated till 6-Stars)

Sum of range distinct queries, Chefs Favourite Function, Minimum Replacement, Equal Hamming Distance, Prefix Ones

Starters 78 Division 1 (Rated till 6 stars)

MinAdd, Bitwise Equation, Balanced Suffix, Solve More Problems!, Divisible Subarray Counting

Starters 84 Division 1 (Rated till 6 Stars)

SUM OR, Max count of 1, Digit Operation, Chef And Adjacent Sums

Starters 86 Division 1 (Rated for All)

Least Size, Minimum Operation, String Game , Largest Y

Starters 88 Division 1 (Rated till 6 Stars)

Maximum And Or, Chef and Asteroids, Minimize the Bits, Chef and Good Array

Starters 89 Division 1 (Rated till 5 Stars)

Positive or Negative Subarrays, Subarray Removal, Two Averages

Starters 90 Division 1 (Rated till 6 Stars)

Crushed Apples and a Balance Scale, Minimum Ugliness, Sum of Goodness, Printing Binary Array, Anti Palindrome

Starters 92 Division 1 (Rated till 6 Stars)

Rectangular Tiling, Dividing into Groups, A Peculiar Arrangement, Chef and Polygons, Beautification of array, Distance Coloring

Starters 93 Division 1 (Rated for All)

Thank U, Next, Why Try, NASA, Greedy, Bloodline, Motive

Starters 94 Division 1 (Rated till 5 Stars)

Strange Sort, Place The Number, Possible or Not, Search for 404, Special Operation, The Vowel Matrix, Rank Queries

Starters 95 Division 1 (Rated till 6 Stars)

Guess Game, Chef and Moves of GCD, Partition and Maximize, Boxes, Transfusion Chain, Break This Array

Starters 96 Division 1 (Rated till 5 Stars)

Swap the numbers, Remove Stones, Zero Array, Mex Array, Absolute Differences

Starters 101 Division 1 (Unrated)

Minimize Xor Difference, Split and ADD, Snakes on a Grid, Partially Increasing Array Queries, Warrior Chef

Starters 103 Division 1 (Rated till 6 Stars)

Cost Distribution, Squarified, X-Ray Grid, Chandelier, Unique xor, Divisible By 8

Starters 105 Division 1 (Rated till 6 Stars)

Spooky Sequences, Dull Operation

Starters 108 Division 1 (Rated till 6 Stars)

Palindromic Prime Numbers, Fair Distribution, Continuous Subarrays, Multiple of 9, Move Negative Stones

Starters 109 Division 1 (Rated till 5 Stars)

Minimum XOR, Chef Lost an Array, Alter Ego, Chroma Swap, Rigged Game

Starters 112 Divison 1 (Rated till 6 Stars)

Cursed Indices, 3 Logicians Walk into a Bar, Yet Another Array Game, Subtree Coloring, Permutation Construction

Starters 115 Division 1 (Rated)

Delete The Array, Subtraction Sequence I, Greedy LIS Algorithm, Binary Grid Forces, Make All Zero

Starters 116 Divison 1 (Rated till 6-Stars)

Chile, Expected Diameter, Chef Product, ORST , Permutation Sort, Exact Savings

Starters 118 Division 1 (Rated till 5-Stars)

Count Substrings, Join States, Is it uniquely decodable, Xorry 2, Xorry 1

Starters 119 Division 1 (Rated till 6-Stars)

K Odd Sum

Starters 123 Division 1 (Rated till 6-Stars)

Minimum And Maximum I, Yet Another Alice Bob Game, Trial of the Conqueror, Minimum And Maximum II

Starters 125 Division 1 (Rated till 6-Stars)

Binary Minimal

Starters 126 Division 1 (Rated till 6 Stars)

Tree Distance Set, Freedom, Uncommon Cycles, LCD, Triangular Swaps

Starters 129 Division 1 (Rated till 5-Stars)

Palindromic Substrings, ConstructXor, Cake Cutting

Starters 134 Division 1 (Rated till 6-Stars)

Count Good RBS, Origin, Prison Escape, 3out1in

Starters 135 Division 1 (Rated till 5-Stars)

Milky-Dark Chocolates, Envious Pile, Graph Cost, Limit of MEX, Change A to B

Starters 136 Division 1 ( Rated till 6-Stars )

Game On Rectangle, Lexicographically Maximal Prefix AND, Sum of Max K Subarray, Sum of Modes

Starters 137 Division 1 (Rated till 5-Stars)

Coprime Subarrays, Speedrun, Double Trouble, Unusual Queries

Starters 138 Division 1 (Rated till 6-Stars)

A power B mod C , TRIPLE PRIMES, K Subarray Products, Prefix Suffix Inequality, Breezy Mode Problem, Distinct Substring

Starters 139 Division 1 (Rated till 5-Stars)

Sort Perm, Sum of N, Counting in Base B, Skill Game, Destroying Bridges Part 2

Starters 141 Division 1 (Rated till 5-Stars)

Amphibian Escape, Perfect Prefixes

Starters 142 Division 1 (Rated till 5-Stars)

Pairs Sum with Length x, The Cards Machine, Array Removal, Number Hunt

Starters 143 Division 1 (Rated till 5-Stars)

Non-Divisor Array, Max Min and Length, Spread of Ratism

Starters 144 Division 1 (Rated)

Counting Is Fun, Sort Lexicographically , Find P, Minimise Inversions, Largest K

Starters 145 Division 1 (Rated till 6-Stars)

Beautiful Array, Make Bob Win , Querified, Token Passing on Tree, Square String

Starters 146 Division 1 (Rated till 5 stars)

Bouncing Ball, Permutation Construction

Starters 147 Division 1 (Rated till 5 stars)

Counting Triangles 101, K Subsequence 101, Counting is Fun 101, Truth Teller And Liars 101, Independence Day 101, Non-Primes 101, Gold Coins 101

Starters 148 Division 1 (Rated till 6 stars)

Double Trouble, The Undisappearance

Starters 150 (Rated till 6 stars)

Equal Pairs (Hard), Min Ops (Easy), Min Ops (Hard), Replacing Game

Starters 151 (rated till 5 stars)

Ball Game, Sequence Search

Starters 152 (Rated till 6 stars)

Completion (Hard), Maximize Hamming Distance, Completion (Easy), Anti-Palindrome Queries

Starters 153 (Rated till 5 stars)

Another Game, Colorful Tree (Easy Version), Xometry (Easy Version), Xometry (Hard Version)

Starters 154 (Rated till 6 stars)

Tree Cut Xor, Count Winning Subarrays, GCD and XOR, Triangle Count (Easy)

Starters 155 (Rated till 5 stars)

GCD to 1 (Hard), Replace With First, Prefix Suffix Min Max

Starters 156 (Rated till 6 stars)

Keep Magnets Separated, Balance Difficulties, Interval Cliques, Partition Score

Starters 157 (Rated till 5 stars)

Small, Smaller, Smallest, MEXtreme Divisibility, Normal is Good, Unmedian

Starters 158 (Rated till 6 stars)

Make a Tree, Global Warming, Buying Game, Multiply 2 to Minimize

Starters 159 (Rated till 5 stars)

Crafty Coloring (Hard), Crafty Coloring (Easy), Glass Bridge (Hard), Super Hero, Random Nim, Glass Bridge (Easy), Chess Colouring, Elections

Starters 160 (Rated till 5 stars)

Palindrome Love, Modindrome, Buying Order (Easy), Buying Order (Hard)

Starters 161 (Rated)

Red-Blue Sort, One To Three, Quick Exit

Starters 162 (Rated till 5 stars)

Empty the String, MEX of XOR, Sum of Empty the String, Permutation Mod K

Starters 163 (Rated till 5 stars)

Tree Sum is Fun !, Nice Array, Permutation Pair, Sort Them, Lexio Swap

Starters 165 (Rated till 6 stars)

A to B, Stable Array

Starters 166 (Rated till 6 stars)

All Equal, Distinct Power, Divisors Array (Hard Version), Divisors Array (Easy Version), Costly Permutations, Chefland Library

Starters 167 (Rated till 5 stars)

Alternate Universe, Temperature Balance, Lottery Tickets, Sum Over Subarrays, Grid Construction (Even), Grid Construction (Odd)

Starters 168 (Rated till 6 stars)

No Two Alike, Binary Removals, Xoperations, Equate XOR

Starters 169 (Rated till 5 stars)

Hamming equivalent

Starters 170 (Rated till 6 star)

Crazy Jumping Frogs, qUiRkY qUesTs (Easy)

Starters 171 (Rated till 5 star)

Advitiya Security Vault, Strange Nim Game, White Wall, Volcanic Eruption

Starters 172 (Rated till 5 stars)

Transform String, AndOr, Tactical Removal

Starters 173 (Rated upto < 2700)

Cool Subsequences, Postman and LLM, Introverts, Cool Checker, Time Penalty, Overwrite

Starters 175 (Rated till 5 stars)

Alternate It!, Multiplexer

Starters 176 (Rated till 4 star)

Same And, Friendly Binary Strings, Mex-P Tree (Hard), Costly Summit, Mex-P Tree (Easy)

Starters 178 (Rated till 6 star)

Smoothly Increasing , Big Difference, Minimum Colours (Easy), Minimum Colours (Hard)

Starters 179 (Rated till 5 star)

Station Allocation, Can you reach

Starters 181 (Rated for all)

Costly Swapping, The Best Matrix, Tree Colouring (Hard), Flip Prefix

Starters 182 (Rated till 5 star)

MasterChef, Minimize the Sum, Palindromic Score

Starters 183 (Rated till 6 star)

Complete MST, S to T

Starters 185 (Rated till 5 star)

GCD Summation, Asymmetric Cookies, Array Deletion Game, Range Maximum Deconstruction (Easy)

Starters 186 (Rated till 6 star)

Distinct Arrays , Mod and Make Y

Starters 187 (Rated till 6 star)

Anti-Subarray Sum, Major Infection, OR What, Distinct Representations

Starters 188 (Rated till 6 star)

K Boxes, Yet Another Monsters Problem

Starters 190 (Rated till 5 star)

Parry It! (Hard), Subsequence Sort, Min-Max Deletion, Parry It! (Easy)

Total Problems Solved: 1086

2548
(Div 1)
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CodeChef Rating (Highest Rating 2564)
  • 68 Global Rank
  • 5 Country Rank

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Received for participating in 50 Contests

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Received for maintaining a streak of 5 days

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