| Contest | Problem |
|---|---|
| JAN16 | DMCS |
| COOK70 | P1Z2S |
| EURO | |
| EZNO | |
| TANDEM | |
| MAZE | |
| NOV16 | BIKE |
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China- Student
- Tsinghua University
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Submissions Heat Map
Learning Paths (3)
Practice Paths (17)
Binary Search
Practice R Programming
Practice Java
Heaps
Practice PHP
Practice C++
Practice Python
500 difficulty rating
Arrays, Strings & Sorting
2D Array / Matrices
Projects using HTML / CSS
Practice JavaScript
Number theory
Python Interview Questions
Practice C
Practice Basic Math
Practice for ZCO and INOI
Contests (22)
September Challenge 2012
Kisses & Hugs, Chef World, Racing Horses, Queries About Numbers, ChefTown Parade, Three is Crowd
October Challenge 2012
Little Elephant and Order, Fierce Battles, Event Organizer, The New Scheme, Need More Diamonds
October Cook-Off 2012
Buying Sweets, Equalization, Tennis Tournament
November Challenge 2012
Lucky Balance, A Wonderful Chocolate, Delicious Dishes, Candy Collecting Game, Coin Flip, Jam Board, Sridhar Likes Travelling
December Challenge 2012
Granama Recipes, Magic Rankings, Pizza Delivery
February 2013 Challenge
Little Elephant and Cards, Buy1-Get1, Climbing Stairs
August Challenge 2013
Little Elephant and Lemonade, Music & Lyrics, Hello Hello, Save The Princess, The Number Of Solutions, Chef and Segments, Sereja and Ballons, Deleting numbers, Prime Distance On Tree, Splitting Candies
January Long Challenge 2016
Dai Ma Chu Shi
February Challenge 2016
Chef and Strange Operations, Devu and a light discussion, Rectangles of Love, Chef-Detective
September Challenge 2016
Chef and Friends, Dividing Machine, Chef and Matrix Division, Chef and digits of a number, Faded Palindromes, JosephLand, Chef and calculation
April Cook-Off 2016
Movie Weekend, Odd Divisors, Queries on a Binary Tree
June Challenge 2017
Chef and Prime Queries, A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
November Cook-Off 2017
Hasan and boring classes, Skiing, Online Chess, Random Pair
October Lunchtime 2017
Buggy Calculator, Maximum Number
February Lunchtime 2020 Division 1
At the Gates, Swapping to Palindrome, Not All Flavours, Monsters Battle, Secret Mission
July Cook-Off 2021 Division 1
Mod Equality
April Long Two 2022 Division 1 (Unrated)
Geometric Mean Inequality, Sasta Shark Tank, Antipodal Points, Akash and Equal Mean, Flip to Invert, Chef And Division, Six Friends, Best Coupon, Pseudo Sorted Array
May Cook-Off 2022 Division 1 (Rated)
Split Powers Of 2, Different Subarrays Rearrange, Triple Inversions
Starters 37 Division 1 (Unrated)
Prefix XORs
May Long One 2022 Division 1 (Unrated)
Mystical Numbers, Pushpa , The Magical Stone, Alternating Diameter, Four Arrays, Sugarcane Juice Business, The Attack of Queen, Football Cup, Miami GP
Starters 42 Division 1 (Unrated)
Sorting Array, Maximise Set Bits , Minimum or Maximum, Divisible by 3, How Many Maximums, Age Limit, Equal Distribution, Minimum number of Flips
June Long One 2022 Division 1 (Unrated)
Full Path Eraser, Expected move, Reduce to zero, Add By Permutation, Chairs Requirement, Subscriptions, Divisible by i , Possible GCD, Alternate Additions, Equal Strings
July Long Two 2022 Division 1 (Unrated)
Sum of Product 2
September Long 2022 Division 1 (Unrated)
Speed Limit Test, Bob at the Bank, Chef and Wire Frames, Interesting Subarray, Good Pairs
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 158 (Rated till 6 stars)
Make a Tree, Index Compression (Easy Version), Index Compression (Hard Version), Global Warming, Largest Subsequence, XOR Smaller, Buying Game, Multiply 2 to Minimize, Diwali Discount, Even vs Odd Divisors
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, Temporary Temperature, Red-Blue Sort, Moneymaking, The XOR Machine, Selling Donuts, One To Three, Two Cards, 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)
New-Pro Coder, Itz Simple, Karthikeya Numbers, Fill the Blanks, Halloween Array, Construct Permutation, Swap and Flip, Connecting Wells
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)