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Contests (135)
April Lunchtime 2021 Division 3
Equinox Strings, Coldplay
April CodeChef Starters 2021 Division 3 (Rated)
Chef On Island, Hiring Test
May Cook-Off 2021 Division 3
The Last Problem, Marathon, Vaccine Drive
May Lunchtime 2021 Division 3
Birthday Gifts, Hoop Jump, Tom And Jerry 1
May CodeChef Starters 2021 Division 3 (Rated)
Plagiarism, Lazy Chef, Correct Sentence
May Challenge 2021 Division 3 (Rated)
Solubility
June Challenge 2021 Division 3 (Rated)
Bitwise Tuples, Bella ciao, Summer Heat
June Cook-Off 2021 Division 3
ICPC Balloons, Chefland Visa
June Lunchtime 2021 Division 3
False Number, HTML Tags, Richie Rich
July Cook-Off 2021 Division 3
Shoe Fit
July Lunchtime 2021 Division 3
Chef and Spells, Beautiful Pairs, Red Alert
CodeChef Starters 7 Division 3 (Rated)
Chess Format, Food Chain
August Cook-Off 2021 Division 2
Equal Difference
August Lunchtime 2021 Division 3
K-th Maximum, Maximum Length Even Subarray, Programming Languages
CodeChef Starters 10 Division 3 (Rated)
Hardest Problem Bet, Odd Repeat, Maximise the Subsequence Sum
September Challenge 2021 Division 3 (Rated)
Airline Restrictions, Travel Pass
SnackDown 2021 - Online Qualifiers
Lucky Number
October Challenge 2021 Division 3 (Rated)
Which Mixture
CodeChef Starters 16 Division 3 (Rated)
Professor And Directions, Chef And Salary Pay, Pass or Fail
November Challenge 2021 Division 3 (Rated)
Weird Palindrome Making, Equal Coins, Which Fuel is Cheaper
CodeChef Starters 19 Division 3 (Rated)
Chef and Contest, Sleepy Chef, Indivisible Permutation
CodeChef Starters 20 Division 2 (Unrated)
Stable Sequence
FizzBuzz Division 3 (Rated)
Magical Planks, Can_Reach, Can You Eat It
November Lunchtime 2021 Division 3
Minimum Number of Pizzas, Chef and Stock Prices
December Lunchtime 2021 Division 2
Maximum Trio
CodeChef Starters 22 Division 3 (Rated)
An Interesting Sequence, Even Subset Xor, Equal Card Game, Elections in Chefland
Code Drive Division 3 (Rated)
Game between friends, Favourite String of Chef
January Cook-Off 2022 Division 3
Palindromes Not Allowed, Mean Maximization, Mask Policy, Hungry Ashish
CodeChef Starters 23 Division 3 (Rated)
Average of Three, Chef and Profits
January Lunchtime 2022 Division 3
Subarray permutations, Chef and Subset Additions, Chef and Lockout Draws
CodeChef Starters 24 Division 3 (Rated)
Avoid Contact, Badminton Serves, Yet Another Constructive Problem, EVM Hacking
CodeChef Starters 25 Division 3 (Rated)
Building Towers, Equal MEX, Points and Lines, Fit in Data Type, Chef and His Fruit Stand
May Lunchtime 2022 Division 2 (Rated)
Bucket and Water Flow , Maximum Pairwise Modular Sum
Starters 39 Division 2 (Rated)
Compress the Video, Closest Vowels
Starters 40 Division 2 (Unrated)
Infinity Staircase, Good Pairs
Starters 41 Division 2 (Rated)
Equal Integers, Is this priority or parity!, Path Parity
Starters 42 Division 2 (Rated)
Minimum or Maximum, Divisible by 3
Starters 44 Division 2 (Rated)
Dense Bracket Sequence
Starters 43 Division 2 (Rated)
The Optimal Pairs, Distinct Palindrome
June Lunchtime 2022 Division 2 (Rated)
Zero Ones Equal One Zeros, The Lost Array, Equal by XORing
June Long Two 2022 Division 3 (Rated)
Count the ACs, Make all equal using Pairs, Complementary Strand in a DNA, Strong Elements
Starters 45 Division 3 (Rated)
Even Equal Odd, Chef and his Apps, Retrieve the Array, Adjacent Sum Parity, Change Row and Column Both
Starters 47 Division 3 (Rated)
Similar Heights, Construct N, End Sorted, Minimum Coins
July Lunchtime 2022 Division 3 (Rated)
The Last Levels, Easy Pronunciation, Yet Another Palindrome Making Problem, Maximum Median Matching, Largest Family
Starters 48 Division 3 (Rated)
Buy Lamps, Fill The Grid, Make Palindrome 2, Positive array
Starters 50 Division 2 (Rated)
Permutation GCD, Sum Product Segments, Average Permutation
Starters 51 Division 2 (Rated)
Split N, Copy and Paste, Different Medians
Starters 54 Division 2 (Unrated)
Equal Distinct
Starters 55 Division 2 (Rated)
Balls and Boxes, Mean and Median, OR Tuples
Starters 56 Division 2 (Rated)
K-Subarrays, Binary Substitution, Maximize Colours
September Lunchtime 2022 Division 2 (Rated) (Based on EJOI)
Stick Break, Permutation Creation
Starters 57 Division 2 (Unrated)
Maximum Expression, Even Splits, Two Different Palindromes
Starters 58 Division 2 (Unrated)
Break the elements
Starters 59 Division 2 (Rated)
Maximum Subarray , Suspense String, Confusing Concatenations, Alternative Sufferings
Starters 60 Division 2 (Rated)
Distinct Numbers, Yet Another Palindrome Problem, Palindrome Flipping
Starters 61 Division 2 (Rated)
Minimise LCS, Weird Subarrays, Subarray Removal
Starters 62 Division 2 (Rated)
Sorted Substrings, Make Multiple, Final Sum
Starters 63 Division 2 (Rated)
Maximize 1s, One-XOR Deletions, Make Length 1, Minimum Absolute Score
Starters 64 Division 2 (Rated)
Luigi and Uniformity, Range Assign, Number of Distinct Elements Minimize, Distinct Neighbours
Starters 65 Division 2 (Rated)
Nahaane Jaa, Candies, Binod
Starters 66 Division 2 (Rated)
Palindrome by Splitting, Connect All Cities, Just Like Mob!
Starters 67 Division 2 (Rated)
Maximum Angriness, Musical Rods, Expensive Steps , Counting Problem, Existence Of X
Starters 68 Division 2 (Rated)
Boring String, XOR Product, Expense List, Make Money
Starters 69 Division 2 (Rated)
Akash and Dinner, Distinct Sequence
Starters 70 Division 2 (Rated)
Minimum distance between 1s, Prime Reversal, Frequency Array Retrieval
Starters 71 Division 2 (Rated)
Pet Store, Flip the Prefix, Maximizing LCS
Starters 72 Division 2 (Rated)
N Triplets
February Cook-Off 2023 Division 2 (Rated)
Take Not Less, Alice Potter And Dumbledore Army, Permutation and Modulus, Minimum Beauty
Starters 77 Division 2 (Rated)
Concat Palindrome, K Increment Palindrome, Three Numbers
Starters 78 Division 2 (Rated)
Bitwise Equation, Valid Expression
Starters 79 Division 2 (Rated)
Mountain, One Stone or Two Stones, Add smallest prime factor, Distinct Opposite Sums
Starters 80 Division 2 (Rated)
Permutation Subsequence, c8kbf and Tree, Prefix Permutation, Equal Elements
Starters 84 Division 2 (Rated)
SUM OR, Max count of 1, Digit Operation, Max Binary, Chef And Adjacent Sums
Starters 85 Division 2 (Rated)
Crazy Bishops on Chessboard, Efficient PAN Linking, Inside The Stadium, TripTastic
Starters 86 Division 2 (Rated)
String Game , Largest Y, Maximise Score
Starters 83 Division 2 (Rated)
Construct String, Order by XOR
Starters 88 Division 2 (Rated)
Maximum And Or, Chef and Asteroids, Unstable Subarray
Starters 89 Division 2 (Rated)
Plus 2 or Minus 1, Positive or Negative Subarrays, Subarray Removal
Starters 90 Division 2 (Rated)
Crushed Apples and a Balance Scale, Sum of Goodness, Printing Binary Array, Anti Palindrome
Starters 92 Division 2 (Rated)
Rectangular Tiling, Dividing into Groups, Beautification of array, Distance Coloring, Dotify Playlist
Starters 93 Division 2 (Rated)
Break Free, NASA, Problem
Starters 94 Division 2 (Rated)
CodeChef Streak, Possible or Not, Search for 404, The Vowel Matrix
Starters 95 Division 2 (Rated)
Boxes, Transfusion Chain, EVacuate to Moon
Starters 97 Division 1 (Rated till 6 Stars)
Make It Special, No Palindrome, Triplets Min
Starters 98 Division 1 (Rated till 6 Stars)
3-Blast Palindrome, Ball Distribution
Starters 99 Division 1 (Rated till 6 Stars)
Exclusion-Inclusion
Starters 100 Division 2 (Rated)
Prime Permutation, Stamps 100
Starters 101 Division 2 (Rated)
Minimize Xor Difference, Warrior Chef, Lockpicking Chef
Starters 102 Division 1 (Rated till 6 Stars)
Parity Permutation, Bit Play
Starters 103 Division 2 (Rated)
Unique xor, Divisible By 8, Dice Number
Starters 106 Division 2 (Rated)
Playing with OR, Save People, Guess the winner!, Count Possibilities
Starters 107 Division 1 (Rated till 6 Stars)
Maximal Expression, Adjacent Flips, OR Permutation
Starters 108 Division 1 (Rated till 6 Stars)
Palindromic Prime Numbers, Fair Distribution
Starters 109 Division 1 (Rated till 5 Stars)
Minimum XOR, Chef Lost an Array, Alter Ego, Chroma Swap
Starters 110 Division 1 (Rated till 5-stars)
Marbles, Am I Lucky!, Monsters, Tetris
Starters 111 Division 1 (Rated till 6 Stars)
LCM Mania, Prefixing, Prime Range Game, Beautiful Strings
Starters 112 Divison 1 (Rated till 6 Stars)
Cursed Indices, 3 Logicians Walk into a Bar, Yet Another Array Game, Permutation Construction
Starters 113 Division 1 (Rated)
Count Distinct Arrays, Minimise Maximum Subarray Sum, Make All Equal, Maximum Score
Starters 114 Division 1 (Rated till 6 Stars)
Yet another Matrix problem, Chef and Tag, Rock-Paper-Scissors
Starters 115 Division 1 (Rated)
Greedy LIS Algorithm, Binary Grid Forces, Make All Zero
Starters 116 Divison 1 (Rated till 6-Stars)
Chef Product, ORST
Starters 117 Division 1 (Rated till 5-Stars)
Not Prime Permutation
Starters 118 Division 1 (Rated till 5-Stars)
Join States, Is it uniquely decodable, Xorry 2, Xorry 1
Starters 119 Division 1 (Rated till 6-Stars)
K Odd Sum, Unalike Gcd & Lcm
Starters 120 Division 1 (Rated till 6 Stars)
Find Permutation , Count Subarrays, Count Arrays
Starters 121 Division 1 (Rated till 6-Stars)
Frequal, Split And Maximize, Caesar Cipher Lite
Starters 122 Division 1 (Rated till 6-Stars)
Arya In Grid, Transformation Cost
Starters 124 Division 2 (Rated)
Binary Parity, Table Strength, Swap and Unite, Make It One, How many arrays
Starters 125 Division 1 (Rated till 6-Stars)
Bucket Game, Operating on A, Binary Minimal
Starters127 Division 1
ABC Conjecture, Anti-Triangle
Starters 128 Division 1 (Rated till 6-Stars)
Binary Substring, XOR And Multiply
Starters 130 Division 2 (Rated)
Updating A, Make Equal, Alternating Binary String, Good Binary String
Starters 133 Division 1 (Rated till 6-Star)
ABC Conjecture 3, Powered Parameters, Too Far For Comfort (Easy Version)
Starters 134 Division 1 (Rated till 6-Stars)
Origin, Prison Escape, 3out1in
Starters 136 Division 1 ( Rated till 6-Stars )
Lexicographically Maximal Prefix AND, Sum of Modes
Starters 137 Division 1 (Rated till 5-Stars)
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 140 Division 1 (Rated till 5-Stars)
Split Permutation, Trick Or Treat, Break The String, Tree Removal
Starters 141 Division 1 (Rated till 5-Stars)
Amphibian Escape, Perfect Prefixes
Starters 143 Division 1 (Rated till 5-Stars)
Non-Divisor Array, Max Min and Length
Starters 144 Division 1 (Rated)
Find P, Minimise Inversions, Largest K
Starters 147 Division 1 (Rated till 5 stars)
K Subsequence 101, Truth Teller And Liars 101, Independence Day 101, Non-Primes 101, Gold Coins 101
Starters 149 (Rated till 5 stars)
Kill Monsters (Hard Version), Maximise Sum, Chef Loves Beautiful Strings (Easy Version)
Starters 151 (rated till 5 stars)
Ball Game, Sequence Search
Starters 152 (Rated till 6 stars)
Maximize Hamming Distance
Starters 155 (Rated till 5 stars)
GCD to 1 (Hard), Replace With First, Prefix Suffix Min Max
Starters 159 (Rated till 5 stars)
Crafty Coloring (Easy), Super Hero, Chess Colouring, Elections
Starters 160 (Rated)
Palindrome Love, Buying Order (Easy), Equate S and T
Starters 163 (Rated)
Tree Sum is Fun !, Nice Array, Minimum Types, Sort Them, Lexio Swap
Starters 166 (Rated till 6 stars)
Distinct Power, Divisors Array (Easy Version), Costly Permutations, Chefland Library
Starters 167 (Rated till 5 stars)
Temperature Balance, Lottery Tickets, Grid Construction (Even), Grid Construction (Odd)
Starters 168 (Rated till 6 stars)
No Two Alike, Binary Removals, Equate XOR
Starters 169 (Rated till 5 stars)
Constant Subsequence, Hamming equivalent
Starters 170 (Rated till 6 star)
Crazy Jumping Frogs, qUiRkY qUesTs (Easy)
Starters 171 (Rated till 5 star)
White Wall, Volcanic Eruption
Starters 174 (Rated upto 2700)
Mystic Slimes
Starters 175 (Rated till 5 stars)
Alternate It!
Weekend Dev Challenge 08: React Projects
Tab Switch, Live crypto update, Fix the render