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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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Programming and DSA

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

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Practice Compete Compiler
Home » Yiming Li
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Yiming Li

Diamond League Diamond League
  • 7★lympanda
  •   China
  • Professional
  • Google
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No. of Contests Participated: 36
2741 (+24)RatingProvisional
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Starters 181 (Rated for all)(2025-04-09 22:30:00)
Global Rank:   11
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Starters 65 Division 1 (Rated for 5 & 6 stars)(2022-12-20 00:00:00)
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Contests (36)

December 2009 (Contest XI)

Park tour, The N Queens Puzzle Revisited, Effective Sets, Palindromic Numbers, Maze of Digits, Plant Location

January 2010 (Contest XII)

Lost Primes

March 2010 Contest

Treasure Hunting, K-important Strings, Tri-Hexagonal Puzzle, Traffic jam

April 2010 Contest

Adding Fractions

July Challenge 2013

Chef and Walking on the rectangle , Count K-Primes

August Challenge 2013

Little Elephant and Lemonade, Hello Hello, Save The Princess, Splitting Candies

August Lunchtime 2013

Pairwise AND sum, Matrix, Sorting

September Challenge 2013

Little Elephant and Exams, Merciless Chef, Cool Guys, Chef and Integers , Project Spoon, CAO Stage-1, CAO Stage-2, Sereja and Snake

September Cook-Off 2013

Strange Matrix, Game, Code, Big Number

October Cook-Off 2013

Polo the Penguin and the Lucky String, Polo the Penguin and the Numbers, Polo the Penguin and the Test, Polo the Penguin and the XOR, Polo the Penguin and the Tree

September Lunchtime 2013

Chef and Magic Numbers , Chef and Gift, Chef and Pie, Chef and Science

October Challenge 2013

Little Elephant and Bamboo, Helping Lira, Maxim and Dividers, Sereja and Transformation, CAO Stage-3, Yet Another Nice Girl, Kamehameha

October Lunchtime 2013

Girl Friend and String Gift, Combinatorial Numbers, Exponential Game, Chefs in Queue

November Challenge 2013

Chef Game, Superpowers of 2, Yet Another Cute Girl, Sereja and Vectors, Uncle Johny, Square Digit Squares, Missing some chairs

November Lunchtime 2013

Lucy and the Number Game, Lucy and the Math Analysis

December Challenge 2013

Cube Cakes, Chef and Codes, Funny Marbles, Magic Pairs, Reign, Rectangular Queries

January Challenge 2014

Magic Trick, Bon Appetit, Please like me, Chef and Feedback

January Cook-off 2014

Chef and the Cake I, Subtraction Game, Interrogating Gangsters

February Cook-Off 2014

Chef and Remissness, Chef and Kingship, Chef and Reunion

February Challenge 2014

Little Elephant and Movies, Draughts, Make Him Happy, Chef and Favourite Sequence, Longest Common Pattern, Little Elephant and Subarrays, Colored Array

January Lunchtime 2014

Chef and Shop, Chef and String, Chef and Numbers, Chef and Way

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

May Lunchtime 2022 Division 1 (Rated)

Balanced 0-1 Tree, Equal After And

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

Get the Segment, Strange BST, 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, One-XOR Deletions, Packing Books, Make Length 1, Minimum Absolute Score, Tasty Decisions, Greedy Grid Moves, Avoid Squares Please

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

Coordinate Points, Nahaane Jaa, Paisa Double, Parity, Candies, Binod, Gormint Aunty, Hackerman, Haha, Potato to Gold, Lazy Ancestors

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, Just Like Mob!, Binary Battles, Squats, Minimum value of special tables, Monopoly in Chefland

Starters 72 Division 1 (Rated till 5-Stars)

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

February Cook-Off 2023 Division 1 (Rated)

Take Not Less, Alice Potter and OWL, Alice Potter And Dumbledore Army

Starters 77 Division 1 (Rated till 5 Stars)

Yet Another XOR Sort, Sort a String, K Forests, Spreading Charges, Tekken, Tom and Jerry Chase, Codechef Airlines, Concat Palindrome, K Increment Palindrome, Three Numbers

Starters 78 Division 1 (Rated till 6 stars)

Yet Another XOR Sort 2, MinAdd, Bitwise Equation, Balanced Suffix, Valid Expression, Passing Marks, Candy Store, Good Turn, Solve More Problems!, Divisible Subarray Counting

Starters 79 Division 1 (Rated till 5 Stars)

Love Squares Hate Cubes, K-Beautiful Subarrays, Mountain, One Stone or Two Stones, Split or Decrease

Starters 80 Division 1 (Rated till 5 stars)

Permutation Subsequence, c8kbf and Tree, Prefix Permutation, Eat Rock!, Matrix Pain

Starters 81 Division 1 (Unrated)

Beautiful Strings, Horde Chess, Unimodal Subsets, Good XOR, Distinct Matrix, Divide Pages, Maximum Capacity, Sunny Day, Arrange the array, Binary Ternary

Starters 82 Division 1 (Rated till 6 stars)

Mode!, Tree Game, Make Them Alike, Find eX, Good Permutations, Difference Matrix

Starters 84 Division 1 (Rated till 6 Stars)

MEX Sequences, 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 87 Division 1 (Rated till 6 Stars)

Count the Permutations (always), Checkpoint, Inversions of subsequences, AB plus C, One or All

Starters 88 Division 1 (Rated till 6 Stars)

Maximum And Or, Chef and Asteroids, Good Operations, Minimize the Bits, Chef and Good Array, Minimum OR Spanning Tree

Starters 89 Division 1 (Rated till 5 Stars)

Positive or Negative Subarrays, Subarray Removal, Two Averages, Evil Infection

Starters 90 Division 1 (Rated till 6 Stars)

Chef And Partytions, Crushed Apples and a Balance Scale, Minimum Ugliness, Sum of Goodness, Finding Sum, Learning SQL, AP Free Sequences, Printing Binary Array, Favourite Numbers, Anti Palindrome

Starters 91 Division 1 (Rated till 6 Stars)

Cheapest Office, XOR & Sum, Odd GCD Permutation, More Inversions, Chef Odd, Maximum Sum Permutation

Starters 92 Division 1 (Rated till 6 Stars)

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

Starters 93 Division 1 (Rated for All)

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

Starters 94 Division 1 (Rated till 5 Stars)

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

Starters 95 Division 1 (Rated till 6 Stars)

Chef and Moves of GCD, 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 99 Division 1 (Rated till 6 Stars)

Segment Three, Maximize Ones, Musical Chairs, Two Piles, Yet Another Bitwise Problem, Exclusion-Inclusion

Starters 100 Division 1 (Rated)

Prime Permutation, Stamps 100, Concussive Sequence, Interesting Swap, Ant

Starters 101 Division 1 (Unrated)

Minimize Xor Difference, Split and ADD, Snakes on a Grid, Partially Increasing Array Queries, Warrior Chef, Work Smarter, Not Harder, Lockpicking Chef, Off By One

Starters 103 Division 1 (Rated till 6 Stars)

Squarified, Unique xor, Divisible By 8

Starters 104 Division 1 (Rated till 6 Stars)

Find Diameter, Longest Non Decreasing Subsequence, Lexicographically Largest , Construct An Array, Maximise Sum

Starters 105 Division 1 (Rated till 6 Stars)

Ghoul-icious Goodies, Reaper Reaps, Racing Dead, Spooky Sequences, Dull Operation, Wishcraft

Starters 106 Division 1 (Rated till 5 Stars)

Fan Poll, Chef Fantasy 11, Playing with OR, Save People, Guess the winner!, Count Possibilities, Smallest Excluded LCM, Reach Anywhere, Summing the values, Is it Obvious, Survival Time

Starters 108 Division 1 (Rated till 6 Stars)

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

August Long 2023 Division 1 (Unrated)

Codechef Copy, Spiritual Chef, All New CodeChef, Maximum Deliciousness, I Can Use Both Hands!

September Short 2023 Division 1 (Unrated)

GCD Discount, Ultimate Fencing, Lucky Seven, Slow Start, Mixing Extraordinaire

Starters 110 Division 1 (Rated till 5-stars)

Marbles,  Am I Lucky!, Tom and Jerry, Monsters, Tetris

Starters 112 Divison 1 (Rated till 6 Stars)

Maximise Sum, Cursed Indices, Food Costs, Fair Share Settlement, 3 Logicians Walk into a Bar, Yet Another Array Game, Minimization Game, Subtree Coloring, Permutation Construction, Max Nutrition

Starters 113 Division 1 (Rated)

Count Distinct Arrays, Maximise The Minimum, Minimise Maximum Subarray Sum, Make All Equal, Score Sum, Maximum Score

Starters 114 Division 1 (Rated till 6 Stars)

Yet another Matrix problem, Game on Array, Chef and Tag, Rock-Paper-Scissors

Starters 115 Division 1 (Rated)

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

Starters 117 Division 1 (Rated till 5-Stars)

Equality Etiquette, Spread Spree, Stingy Arrays, Go Away, Goose!, Not Prime Permutation, Roads and Flights, Weapon Choice, Spell Shortening, Yearly Phone

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, Xorred, Unalike Gcd & Lcm, Guess Who Delivers

Starters 120 Division 1 (Rated till 6 Stars)

Find Permutation , Minimum Operations, Construct Permutation, Count Subarrays, Count Arrays

Starters 121 Division 1 (Rated till 6-Stars)

Frequal, Colourful Balls, Split And Maximize, Caesar Cipher Lite, Magic Palindrome

Starters 122 Division 1 (Rated till 6-Stars)

Arya In Grid, Transformation Cost, Matrix Modulo, Cursed, Elf on the Shelf

Starters 124 Division 1 (Rated till 5-Stars)

Swap and Unite, Make It One, How many arrays, It is a tree

Starters 125 Division 1 (Rated till 6-Stars)

Bucket Game, Lazy Rescue, Manhattan Xor, Operating on A, Binary Minimal

Starters 126 Division 1 (Rated till 6 Stars)

Remove the Peaks, Tree Distance Set, AC Please, Dice Game 3, Freedom, Sale, Uncommon Cycles, LCD, Permutation Disturbance, Triangular Swaps

Starters127 Division 1

Array Operations, Expected Components, Curse of Damyaan, Purify It, ABC Conjecture, The Ides of March, Superincreasing, Extreme Basketball, Anti-Triangle

Starters 128 Division 1 (Rated till 6-Stars)

Binary Substring, XOR And Multiply, Counting Problem

Starters 129 Division 1 (Rated till 5-Stars)

Palindromic Substrings, Red Blue Decomposition, ConstructXor, SumXor, Cake Cutting

Starters 130 Division 1 ( Rated till 6-Stars)

Updating A, Make Equal, Minimize the Difference, Append Array, Good Binary String

Starters 131 Division 1 (Rated till 5 Stars)

ABC Conjecture 2, K-Closeness, Digit Space, Encrypt Value, T-Perm

Starters 132 Division 1 (Rated till 6 Stars)

ALIEN-OR, Optimal Flip, Random Array, MEX QUERIES , Prime Query

Starters 133 Division 1 (Rated till 6-Star)

ABC Conjecture 3, Powered Parameters, Too Far For Comfort, Fireworks, Too Far For Comfort (Easy Version)

Starters 134 Division 1 (Rated till 6-Stars)

Count Good RBS, Permutation Cycle Queries, Origin, Prison Escape, 3out1in

Starters 135 Division 1 (Rated till 5-Stars)

Milky-Dark Chocolates, Envious Pile, Graph Cost, Invert And Equalize, Limit of MEX, Change A to B, Football Ties, RCB vs CSK

Starters 136 Division 1 ( Rated till 6-Stars )

Game On Rectangle, Lexicographically Maximal Prefix AND, Sum of Max K Subarray, Sum of Modes, Non-Zero XOR

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, Cyclopian Edges, Breezy Mode Problem, Heat Wave, Long Drive, Distinct Substring

Starters 139 Division 1 (Rated till 5-Stars)

Sort Perm, Sum of N, Maximum Distance Permutations, Counting in Base B, Skill Game, Distribute Cookies, Destroying Bridges Part 2, Television Channels

Starters 140 Division 1 (Rated till 5-Stars)

Lucky Matrix, Make Permutation, Split Permutation, Trick Or Treat, Yoga Day, Break The String, Yoga Class, Tree Removal

Starters 141 Division 1 (Rated till 5-Stars)

Possible Contender, Amphibian Escape, Perfect Prefixes

Starters 142 Division 1 (Rated till 5-Stars)

Sum of Xors, Pairs Sum with Length x, Ratist Behaviour, The Cards Machine, Chef loves Pizza Chef loves halfs, Writing Speed, Penalty Shoot-out, Array Removal, Number Hunt

Starters 143 Division 1 (Rated till 5-Stars)

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

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)

Back Front, Connect The Chains, Bouncing Ball, Permutation Construction, Binary Strings Yet Again, Knockout tournament, No Winner, Olympics 2024

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, Shortest Distances 101, Gold Coins 101

Starters 148 Division 1 (Rated till 6 stars)

Xor Minimization (Easy), Double Trouble, Beautiful Flip, The Undisappearance, Xor Minimization (Hard), ZigZag Tree Sequences (Easy)

Starters 149 (Rated till 5 stars)

Kill Monsters (Hard Version), Maximise Sum, Chef Loves Beautiful Strings (Hard Version), Chef Loves Beautiful Strings (Easy Version)

Starters 150 (Rated till 6 stars)

Equal Pairs (Hard), Min Ops (Hard), Tree Requirements (Easy), Not Equal On Tree, Replacing Game

Starters 151 (rated till 5 stars)

Ball Game, Shooting (Hard), RGB Grid (Hard), Sequence Search, Convert string, Shooting (Easy), International Gym Day, RGB Grid (Easy), RGB Grid (Medium), Weightlifting

Starters 152 (Rated till 6 stars)

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

Starters 153 (Rated till 5 stars)

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

Starters 154 (Rated till 6 stars)

Min Max Paths, Tree Cut Xor, Count Winning Subarrays, GCD and XOR, Triangle Count (Hard), Triangle Count (Easy), Add 1 or 2 Game, Calorie Limit, Coldplay Tickets

Starters 155 (Rated till 5 stars)

Numismatics, Chef and Parole, GCD to 1 (Easy), GCD to 1 (Hard), Replace With First, Replace With First Literally, Prefix Suffix Min Max, Array Concatanation, Rectangled

Starters 156 (Rated till 6 stars)

Count Triplets, Keep Magnets Separated, Expected Value Problem, Balance Difficulties, Interval Cliques, Partition Score, Sweets Shop, Long Queue, Even Numbers Hate

Starters 157 (Rated till 5 stars)

Small, Smaller, Smallest, MEXtreme Divisibility, Normal is Good, Unmedian, Saturated Subarrays, Not-too-far Replacement, Glass Prices, Non-matching Name, Normal is Good (Easy)

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), Icecream and Cone, Glass Bridge (Hard), Super Hero, Random Nim, Glass Bridge (Easy), Chess Colouring, Elections, Card Game

Starters 160 (Rated till 5 stars)

Too Many Oranges, Movie Snacks, Palindrome Love, Modindrome, Unstable Elections, Buying Order (Easy), Buying Order (Hard), Equate S and T

Starters 161 (Rated)

Min-Max Game, Red-Blue Sort, The XOR Machine, One To Three, Quick Exit

Starters 162 (Rated till 5 stars)

Empty the String, Adjacent Sum Array, MEX of XOR, Sum of Empty the String, Permutation Mod K, Calorie Intake, Assignment Score, And Sort

Starters 163 (Rated till 5 stars)

Tree Sum is Fun !, Nice Array, Permutation Pair, Chef and Socks, Binary Sum, Minimum Types, Sort Them, Lexio Swap

Starters 164 (Rated till 5 stars)

Karthikeya Numbers, Fill the Blanks, Halloween Array, Construct Permutation, Connecting Wells

Starters 165 (Rated till 6 stars)

Different Replacement, A to B, Stable Array, Sum Operations (Easy), Reverse and Alternate (Count)

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)

GCD Partition, No Two Alike, Can You Bench, Binary Removals, Xoperations, Equate XOR, Make Odd, Big Achiever, Chef Loves Maths

Starters 169 (Rated till 5 stars)

No Palindromes, Constant Subsequence, Hamming equivalent

Starters 170 (Rated till 6 star)

Array Compression, Crazy Jumping Frogs, qUiRkY qUesTs (Easy), Simultaneous Robots, Stabilize Warwick

Starters 173 (Rated upto < 2700)

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

Starters 174 (Rated upto 2700)

GCD Add Size, Meximal Sum, Mystic Slimes, Graph Monsters

Starters 175 (Rated till 5 stars)

Alternate It!, Build Sum, Multiplexer

Starters 176 (Rated till 4 star)

Same And, Friendly Binary Strings, Mex-P Tree (Hard), Clothing Store, Run for Fun, Costly Summit, Mex-P Tree (Easy)

Starters 177 (Rated till 5 star)

Blocks on a Tree, Matching Arrays, Sum By OR, Flip or Reverse, Increasing XOR Queries, Counting 01 and 10, Ordered Distances, Triangle Checking, 2 Boxes

Starters 178 (Rated till 6 star)

Smoothly Increasing , Big Difference, Count Disjoint Arrays, Reduce to Palindrome, Minimum Colours (Hard)

Starters 179 (Rated till 5 star)

Max Swap And, Lost in the Fest!!, Set Major, Product Path, Station Allocation, Unlock The Safe, Conquer the Fest!!, Can you reach, Set Major (Prefix)

Starters 180 (Rated till 6 star)

Shall we play a game, Huh, Easy, Counting Problem

Starters 181 (Rated for all)

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

Starters 182 (Rated till 5 star)

MasterChef, Minimize the Sum, Palindromic Score

Starters 183 (Rated till 6 star)

Swap Permutation 1, Swap Permutation 2, Arbitrary Shuffling, Complete MST, S to T

Starters 184 (Rated till 5 star)

Second MEX, Adjacent OR, Front or Back, Double or Append

Starters 185 (Rated till 5 star)

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

Starters 186 (Rated till 6 star)

Lighthouses, Distinct Arrays , Segment Tree Reconstruction, Mod and Make Y

Starters 187 (Rated till 6 star)

Anti-Subarray Sum, Major Infection, OR What, Minimize Tree GCD, Distinct Representations

Starters 188 (Rated till 6 star)

GCD and XOR 2 (Easy), GCD and XOR 2 (Hard), Swaps in a String, K Boxes, Inversion Queries, Yet Another Monsters Problem, Red and Blue Gems, Subset Sum 3, Train Even or Odd

Starters 189 (Rated till 5 star)

Number Walks, Blocks in a String, Sortable Subarrays (Hard), Nutrition Cost, Create Binary String, Distinct 2 Subarray, Pizza Party, Avoid Primes, Sortable Subarrays (Easy)

Starters 190 (Rated till 5 star)

Subsequence Sort, 1-2 Reorder, Min-Max Deletion, Parry It! (Easy)

Total Problems Solved: 1010

2741
(Div 1)
★★★★★★★
CodeChef Rating (Highest Rating 2741)
  • 19 Global Rank
  • 1 Country Rank

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