Aeren
- 7★flowerofsorrow
South Korea- Other
- No Active Plan. View Details
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Ratings System Update
(2025-08-20 23:00:00)Ratings System Update
(2022-12-20 00:00:00)Learning Paths (0)
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Practice Paths (0)
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Contests (51)
February Challenge 2020 Division 2
No Change Required, The Theatre Problem, School of Geometry, Hard Cash
March Challenge 2020 Division 2
Chef and DAG, XOR Engine, Ada Bishop 2, Lasers Everywhere, Lasers Everywhere Alternative, Pintu and Fruits
May Cook-Off 2020 Division 1
Chef, Chefina and Their Friendship, Chefina on a Trip, Roads in Chefland
April Lunchtime 2020 Division 2
Dot Time, Triangle Query, Another Birthday Present!, Positive Mex, Chef in Fantasy League
July Challenge 2020 Division 1
LCM Constraints, Chefina and Swaps, Chef and Dragon Dens, Missing a Point, Doctor Chef, Expected Repetitions
August Challenge 2020 Division 1
Insanely Hard School Exams, Subsequence Frequency Counting, Smallest KMP, Chef and Wedding Arrangements
July Cook-Off 2020 Division 1
What Is This, a Crossover Episode, The In-XOR-able Task, Even-tual Reduction, OR-thodox Distinction, Path-etic Products
July Lunchtime 2020 Division 1
Profitable Paths 2, Golomb Sequence, Binary Concatenation
August Lunchtime 2020 Division 1
Game on a Strip, Counting Graphs, Alien Invasion , Elevator
June Cook-Off 2020 Division 1
Per Capita Income, Checkpoints, Banned Quotient
June Lunchtime 2020 Division 1
Maximum AND, Gold Mining, Square Submatrices
October Challenge 2020 Division 1
Inversions, Positive AND, Replace for X, D-Dimensional MST, Compress all Subsegments, Adding Squares
December Cook-Off 2020 Division 1
Mysterious Sequence, Self-Destructing Strings, Sed Passwords, Circle of Chaos, Carry All Fruits
January Cook-Off 2021 Division 1
Mex Subsequence, Not Too Colourful, Prefix And, Common Ancestors
December Lunchtime 2020 Division 1 (Unrated)
K-Tuple Tree, Three Letters, One Zero Swaps
January Lunchtime 2021 Division 1 (Unrated)
Good Grid, Shifting Spoons, Dreams of Divisibility, Even Sum
October Cook-Off 2020 Division 1
Path-etic Sums, The In-XOR-able Task, Yet Another Crossover Episode
November Cook-Off 2020 Division 1
Flip the String, Chef and IPC Certificates, Hiring Workers
October Lunchtime 2020 Division 1
Chef Likes Good Sequences, Chef Is Just Throwing Random Words, Counting Spaghetti, Cute Chef Gift
November Lunchtime 2020 Division 1
Gasoline
Coders' Legacy (Rated for all)
Chef vs Doof, Doof on Cartesian, Doof fires Brackets, Jeremy gets a gift
September Cook-Off 2020 Division 1
Joined Subarrays on Tree, Maximise Subsequence Value, Minimum Insertions
September Lunchtime 2020 Division 1
Permutation Split, Root the Tree, Robot Detector
February Challenge 2021 Division 1
Team Name, Another Tree with Number Theory, Prime Game, Multiple Games, XOR Sums, Bash Matrix, Cell Shell
March Cook-Off 2021 Division 1
Consecutive Deletions, Water Transfer, Sort String, Chef and Sorting
February Lunchtime 2021 Division 1
Average Sorting, Sed Max, Chef and Reordering, Independent Set
April Cook-Off 2021 Division 1
Array and Operations, Tree Distances, OR of ANDs, Valet Parking, Deletion Sort
May Lunchtime 2021 Division 1
Tokens On A Tree, Interactive MST, Total Components, K-Subarrays
June Cook-Off 2021 Division 1
Binary String on Steroids, Battle Royale, Polynomial Root
June Lunchtime 2021 Division 1
From Rational to Binary, HTML Tags, Richie Rich, Node Marking, Tic Tac Toe
July Cook-Off 2021 Division 1
Beautiful Subsequence, Mod Equality, Hidden Colored Graph, Make the Matrix Beautiful
July Lunchtime 2021 Division 1
Longest Good Segment
August Cook-Off 2021 Division 1
Odd Array, Different String, Chef 2 Chef, Interactive Equivalency, Clear the Array
September Cook-Off 2021 Division 1
Chess Kings Chasing Game, Chef and Pairwise Distances, Permutation and GCD Set, Half Sequence, Fake Swaps
SnackDown 2021 - Online Qualifiers
Prefix as a Substring 2, Lucky Number, Maximum Number Of Distinct Elements, Minimise Difference
September Lunchtime 2021 Division 1
Range Array, Interesting Representation, Subsequence LCS, Alice vs Bob Faceoff
October Cook-Off 2021 Division 1
Can You Reach The End, Chef Up
October Lunchtime 2021 Division 1
Median Rearrangement, Tree Upshot
SnackDown 2021 - Online Round 1A
Yet Another Flipping Problem, Round Robin Ranks , Dance Moves, Equal Beauty, Min Max LCM
SnackDown 2021 - Online Pre-Elimination
Non-Decreasing Subsequence of size K, Good ranking, Product Pain, Guests like slippers
SnackDown 2021 - Online Elimination Round (Rated for all)
Random Convex Hull, Graduate Work Matters, Sorting Segments
December Lunchtime 2021 Division 1
Optimal Sorting, Romantic Reversals, Sleep Technique
SnackDown 2021 - Final Round Parallel Contest (Unrated)
Ones Guessing, AND of Maximums
February Cook-Off 2022 Division 1
Xor Becoming Uncanny, Perfect Permutation, PerMEXuation , Mango Market, Slingshot
April Lunchtime 2022 Division 1(Rated)
Modular Circular Permutations, Do Not Touch the MEX!!!, Secret Machine Mania
July Cook-Off 2022 Division 1 (Rated)
Partition Queries, Segmentation Fault, Subsequence LCM
June Lunchtime 2022 Division 1 (Rated)
Chef And Lost Array, The Lost Array, Max Shift After XOR, XOR Times 2 Is Sum, Minimum Xor On Segment
Starters 115 Division 1 (Rated)
Subtraction Sequence I, Greedy LIS Algorithm, Binary Grid Forces, Make All Zero
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, Escape, Caesar Cipher Lite, Magic Palindrome
Starters 123 Division 1 (Rated till 6-Stars)
Minimum And Maximum I, Making Stars, Yet Another Alice Bob Game, Trial of the Conqueror, Minimum And Maximum II, XOR Partition Sort
Starters 126 Division 1 (Rated till 6 Stars)
Remove the Peaks, Tree Distance Set, Freedom, Uncommon Cycles, LCD, Triangular Swaps
Starters 128 Division 1 (Rated till 6-Stars)
Binary Substring, XOR And Multiply, Counting Problem, Defeating Monsters
Starters 134 Division 1 (Rated till 6-Stars)
Count Good RBS, Chef and Bit Tree, Origin, Prison Escape, 3out1in
Starters 144 Division 1 (Rated)
Find P, Minimise Inversions, Largest K
Starters 152 (Rated till 6 stars)
Alien Operation, Completion (Hard), Maximize Hamming Distance, Completion (Easy), Anti-Palindrome Queries
Starters 161 (Rated)
Min-Max Game, Red-Blue Sort, One To Three, Quick Exit
Starters 173 (Rated upto < 2700)
Cool Subsequences, Postman and LLM, Introverts, Cool Checker, Time Penalty, Overwrite
Starters 174 (Rated upto 2700)
GCD Add Size, Meximal Sum, Mystic Slimes, Graph Monsters
Starters 178 (Rated till 6 star)
Smoothly Increasing , Big Difference, Count Disjoint Arrays, Reduce to Palindrome, Minimum Colours (Hard)
Starters 186 (Rated till 6 star)
XOR with Add X, Distinct Arrays , Segment Tree Reconstruction, Mod and Make Y
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
Starters 193 (Rated for all)
Mex Tree (Min), Mex Tree (Max), Shop Game (Easy), Add Permutation
Starters 194 (Rated for all)
Terminal States, Munchys Modulo, Polygon (Subtasks Here), Good Arrays (Cyclic), Good Arrays (Not Cyclic)
Starters 200 (Rated for all)
Permutation Counting (Easy), Lexicographic Matching, Minimum Set, Restrict Palindromes
Starters 201 (Rated till 6 star)
Compare and Connect, Permutation Cost Sum, Huge Grid (Hard Version), Tuple Slimes, Huge Grid (Easy Version), Delete Maximum