risujiroh
- 7★risujiroh
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Ratings System Update
(2024-11-20 22:30:00)Ratings System Update
(2022-12-20 00:00:00)Learning Paths (0)
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Contests (39)
February Lunchtime 2020 Division 2
Painter Problem, At the Gates, Swapping to Palindrome, Not All Flavours, Monsters Battle, Secret Mission
July Challenge 2020 Division 2
Ada King, Chefina and Swaps, Chef and Dragon Dens, Missing a Point, Doctor Chef, Chef and Card Game, Chef and Strings
July Lunchtime 2020 Division 1
Profitable Paths 2, Golomb Sequence, Coloured Pairings, Binary Concatenation , Pairs of Pairs
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
Coders' Legacy (Rated for all)
Chef vs Doof, Doof on Cartesian, Doof fires Brackets, Jeremy gets a gift
September Lunchtime 2020 Division 1
Root the Tree, Robot Detector
UWCOI 2021 (Rated for all)
Organisation, City Mapping 2, Array Swaps, Efficient Delivery, Hidden Numbers, Binary Puzzle
April Cook-Off 2021 Division 1
Tree Distances, OR of ANDs, Valet Parking, Deletion Sort
April Lunchtime 2021 Division 1
A Special Tree, Magical Coins
May Lunchtime 2021 Division 1
Tokens On A Tree, Similar Arrays, 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, Hidden Cell, Node Marking, Tic Tac Toe
July Cook-Off 2021 Division 1
Beautiful Subsequence, Mod Equality, Hidden Colored Graph, Make the Matrix Beautiful
August Cook-Off 2021 Division 1
Odd Array, Different String, Maximum Tree Jumps, Chef 2 Chef, Interactive Equivalency, Clear the Array, Construct a String
August Lunchtime 2021 Division 1
Bunny Hops, Min-Max Path, Just a Graph, Longest Spanning Substrings, Chef and Deque
SnackDown 2021 - Online Qualifiers
Lucky Number
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, Find the Modulus, Chef Up, Permutation Sorting Game
SnackDown 2021 - Online Round 1A
Round Robin Ranks , Dance Moves, Min Max LCM
SnackDown 2021 - Online Round 1B
Queens Placement , Largest Laddu, Help Nishant
SnackDown 2021 - Online Pre-Elimination
Non-Decreasing Subsequence of size K, Good ranking, Product Pain, Guests like slippers, Mega mu - 1
SnackDown 2021 - Online Elimination Round (Rated for all)
Random Convex Hull, Graduate Work Matters, Sorting Segments, Sorter Prodigy
November Lunchtime 2021 Division 1
Min-Max Rotations, Permutation Pairs, Subarray Jumps
SnackDown 2021 - Final Round
Ones Guessing, Finally, Non Ad-Hoc Problem, AND of Maximums
December Cook-Off 2021 Division 1
Binary String Game, Destructive Nim, RGB Construction, Break the Balance
December Lunchtime 2021 Division 1
In-tree-active Node Coloring, Optimal Sorting, Romantic Reversals, Sleep Technique , Point constraints
January Lunchtime 2022 Division 1
Circular Permutation Recovery, Permutation XOR Sum
February Cook-Off 2022 Division 1
Xor Becoming Uncanny, Perfect Permutation, PerMEXuation , Mango Market, Slingshot
February Lunchtime 2022 Division 1
Permutation Xor, Chef Cooks Permutation, Visit Them All, Magical Modulo, Magnet Sort
March Cook-Off 2022 Division 1
Secret Tree, Dragonado And XOR, Flippable Points, Oh I Dont Care, Alternating Divisibility
March Lunchtime 2022 Division 1
Subsequence, Mathology, Sussy Rooks, Winter, Adjacency Love, Separate Them All
April Lunchtime 2022 Division 1(Rated)
Modular Circular Permutations, Do Not Touch the MEX!!!, Secret Machine Mania
May Cook-Off 2022 Division 1 (Rated)
Split Powers Of 2, Different Subarrays Rearrange, Triple Inversions
May Lunchtime 2022 Division 1 (Rated)
Balanced 0-1 Tree, Equal After And, Rearrange Ranges
June Lunchtime 2022 Division 1 (Rated)
The Lost Array, Max Shift After XOR, XOR Times 2 Is Sum, Minimum Xor On Segment, XOR, The Detective, SPLIT With XOR Not X, Increase to Zero
July Lunchtime 2022 Division 1 (Rated)
Tree Interval Queries, Tree Retrieval, Binary String Happiness, Consecutive XOR, Largest Family
February Cook-Off 2023 Division 1 (Rated)
Take Not Less, Alice Potter and OWL, Alice Potter And Dumbledore Army
Starters 100 Division 1 (Rated)
Prime Permutation, Stamps 100, Concussive Sequence, Ant
Starters 113 Division 1 (Rated)
Count Distinct Arrays, Minimise Maximum Subarray Sum, Make All Equal, Score Sum, Maximum Score
Starters 115 Division 1 (Rated)
Delete The Array, Subtraction Sequence I, Subtraction Sequence II, Greedy LIS Algorithm, Binary Grid Forces, Make All Zero
Starters 130 Division 1 ( Rated till 6-Stars)
Updating A, Make Equal, Costly Swapping, Append Array, Good Binary String
Starters 131 Division 1 (Rated till 5 Stars)
Chef needs to return some videotapes, 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, Goodness Over Good, MEX QUERIES , Prime Query
Starters 133 Division 1 (Rated till 6-Star)
ABC Conjecture 3, Powered Parameters, Too Far For Comfort, Too Far For Comfort (Easy Version)
Starters 134 Division 1 (Rated till 6-Stars)
Count Good RBS
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, Concat Lexmax Substrs, 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, Distinct Substring
Starters 140 Division 1 (Rated till 5-Stars)
Lucky Matrix, Split Permutation, Trick Or Treat, Break The String, Tree Removal
Starters 142 Division 1 (Rated till 5-Stars)
Sum of Xors, Pairs Sum with Length x, The Cards Machine, Array Removal, Number Hunt
Starters 144 Division 1 (Rated)
Counting Is Fun, 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
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)
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), Not Equal On Tree, Replacing Game
Starters 154 (Rated till 6 stars)
Min Max Paths, Tree Cut Xor, Count Winning Subarrays, GCD and XOR, Triangle Count (Hard), Triangle Count (Easy)
Starters 156 (Rated till 6 stars)
Keep Magnets Separated, Expected Value Problem, Balance Difficulties, Interval Cliques, Partition Score
Starters 158 (Rated till 6 stars)
Make a Tree, Index Compression (Easy Version), Index Compression (Hard Version), 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 161 (Rated)
Easy Constructive Problem, Min-Max Game, Red-Blue Sort, The XOR Machine, One To Three, Quick Exit
Starters 165 (Rated till 6 stars)
Different Replacement, A to B, Stable Array, Sum Operations (Easy), Reverse and Alternate (Count)