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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
28:08:28
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Difficulty:
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matrices
combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
meet-in-the-middle
number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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Custom test
Problems
#
Name
1375I
Cubic Lattice
geometry
,
math
,
matrices
,
number theory
3500
x75
1540E
Tasty Dishes
math
,
matrices
3500
x96
1266H
Red-Blue Graph
dp
,
graphs
,
math
,
matrices
,
meet-in-the-middle
3400
x97
865G
Flowers and Chocolate
combinatorics
,
math
,
matrices
3300
x129
618G
Combining Slimes
dp
,
math
,
matrices
,
probabilities
3300
x214
1599E
Two Arrays
data structures
,
matrices
3200
x64
1344F
Piet's Palette
matrices
3200
x247
1864H
Asterism Stream
dp
,
math
,
matrices
3200
x251
1672G
Cross Xor
constructive algorithms
,
graphs
,
math
,
matrices
3200
x307
578F
Mirror Box
matrices
,
trees
3200
x521
1184D2
Parallel Universes (Hard)
math
,
matrices
3100
x101
446E
DZY Loves Bridges
math
,
matrices
3100
x117
923E
Perpetual Subtraction
fft
,
math
,
matrices
3100
x425
1286D
LCC
data structures
,
math
,
matrices
,
probabilities
3100
x543
1474F
1 2 3 4 ...
dp
,
math
,
matrices
3000
x231
453D
Little Pony and Elements of Harmony
dp
,
matrices
3000
x456
1152F2
Neko Rules the Catniverse (Large Version)
bitmasks
,
dp
,
matrices
3000
x579
1844G
Tree Weights
bitmasks
,
constructive algorithms
,
data structures
,
dfs and similar
,
implementation
,
math
,
matrices
,
number theory
,
trees
3000
x627
506E
Mr. Kitayuta's Gift
combinatorics
,
dp
,
matrices
,
strings
3000
x665
891E
Lust
combinatorics
,
math
,
matrices
3000
x818
497E
Subsequences Return
dp
,
matrices
2900
x280
1698G
Long Binary String
bitmasks
,
math
,
matrices
,
meet-in-the-middle
,
number theory
2900
x297
193E
Fibonacci Number
brute force
,
math
,
matrices
2900
x319
917C
Pollywog
combinatorics
,
dp
,
matrices
2900
x367
167E
Wizards and Bets
dfs and similar
,
graphs
,
math
,
matrices
2900
x536
1616F
Tricolor Triangles
brute force
,
graphs
,
math
,
matrices
2900
x572
446D
DZY Loves Games
math
,
matrices
,
probabilities
2800
x366
736D
Permutations
math
,
matrices
2800
x438
1152F1
Neko Rules the Catniverse (Small Version)
bitmasks
,
dp
,
matrices
2800
x501
1919F2
Wine Factory (Hard Version)
data structures
,
dp
,
flows
,
greedy
,
matrices
2800
x712
267C
Berland Traffic
math
,
matrices
2700
x152
86E
Long sequence
brute force
,
math
,
matrices
2700
x177
989E
A Trance of Nightfall
dp
,
geometry
,
matrices
,
probabilities
2700
x226
1197F
Coloring Game
dp
,
games
,
matrices
2700
x232
472F
Design Tutorial: Change the Goal
constructive algorithms
,
math
,
matrices
2700
x247
1511F
Chainword
brute force
,
data structures
,
dp
,
matrices
,
string suffix structures
,
strings
2700
x410
498E
Stairs and Lines
dp
,
matrices
2700
x432
1916H2
Matrix Rank (Hard Version)
combinatorics
,
dp
,
math
,
matrices
,
string suffix structures
2700
x485
1025E
Colored Cubes
constructive algorithms
,
implementation
,
matrices
2700
x544
1916H1
Matrix Rank (Easy Version)
brute force
,
combinatorics
,
dp
,
math
,
matrices
2700
x567
1411G
No Game No Life
bitmasks
,
games
,
math
,
matrices
2700
x570
113D
Museum
math
,
matrices
,
probabilities
2700
x642
575A
Fibonotci
data structures
,
math
,
matrices
2700
x750
1458C
Latin Square
math
,
matrices
2700
x1188
576D
Flights for Regular Customers
dp
,
matrices
2700
x1278
177G2
Fibonacci Strings
matrices
,
strings
2600
x166
1402C
Star Trek
*special problem
,
combinatorics
,
dfs and similar
,
dp
,
games
,
graphs
,
matrices
,
trees
2600
x195
832E
Vasya and Shifts
matrices
2600
x270
60E
Mushroom Gnomes
math
,
matrices
2600
x313
1895F
Fancy Arrays
combinatorics
,
dp
,
math
,
matrices
2600
x604
1681E
Labyrinth Adventures
data structures
,
dp
,
matrices
,
shortest paths
2600
x693
1380F
Strange Addition
data structures
,
dp
,
matrices
2600
x746
917D
Stranger Trees
dp
,
math
,
matrices
,
trees
2600
x984
750E
New Year and Old Subsequence
data structures
,
divide and conquer
,
dp
,
matrices
2600
x1459
93D
Flags
dp
,
math
,
matrices
2500
x326
351C
Jeff and Brackets
dp
,
matrices
2500
x535
1808E2
Minibuses on Venus (medium version)
combinatorics
,
divide and conquer
,
dp
,
matrices
2500
x627
147B
Smile House
binary search
,
graphs
,
matrices
2500
x738
1701F
Points
combinatorics
,
data structures
,
implementation
,
math
,
matrices
2500
x875
696D
Legen...
data structures
,
dp
,
matrices
,
strings
2500
x1203
1427E
Xum
bitmasks
,
constructive algorithms
,
math
,
matrices
,
number theory
2500
x1251
348D
Turtles
dp
,
matrices
2500
x1537
51E
Pentagon
combinatorics
,
graphs
,
matrices
2400
x359
593E
Strange Calculation and Cats
dp
,
matrices
2400
x394
107D
Crime Management
dp
,
graphs
,
matrices
2400
x397
662A
Gambling Nim
bitmasks
,
math
,
matrices
,
probabilities
2400
x424
193C
Hamming Distance
constructive algorithms
,
greedy
,
math
,
matrices
2400
x493
946F
Fibonacci String Subsequences
combinatorics
,
dp
,
matrices
2400
x521
837F
Prefix Sums
binary search
,
brute force
,
combinatorics
,
math
,
matrices
2400
x726
226C
Anniversary
data structures
,
implementation
,
math
,
matrices
,
number theory
2400
x838
1106F
Lunar New Year and a Recursive Sequence
math
,
matrices
,
number theory
2400
x935
1924C
Fractal Origami
geometry
,
math
,
matrices
2400
x1001
632F
Magic Matrix
brute force
,
divide and conquer
,
graphs
,
matrices
,
trees
2400
x1005
780F
Axel and Marston in Bitland
bitmasks
,
dp
,
graphs
,
matrices
2400
x1014
1713E
Cross Swapping
2-sat
,
data structures
,
dsu
,
greedy
,
matrices
2400
x1500
1761E
Make It Connected
binary search
,
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
matrices
,
trees
,
two pointers
2400
x1700
1609E
William The Oblivious
bitmasks
,
data structures
,
dp
,
matrices
2400
x1809
959F
Mahmoud and Ehab and yet another xor task
bitmasks
,
dp
,
math
,
matrices
2400
x1912
385E
Bear in the Field
math
,
matrices
2300
x551
1151F
Sonya and Informatics
combinatorics
,
dp
,
matrices
,
probabilities
2300
x1124
1814E
Chain Chips
data structures
,
dp
,
matrices
2300
x1189
1743F
Intersection and Union
data structures
,
dp
,
matrices
,
probabilities
2300
x1391
1101G
(Zero XOR Subset)-less
math
,
matrices
2300
x1589
1182E
Product Oriented Recurrence
dp
,
math
,
matrices
,
number theory
2300
x2505
718C
Sasha and Array
data structures
,
math
,
matrices
2300
x3329
1188B
Count Pairs
math
,
matrices
,
number theory
,
two pointers
2300
x4182
514E
Darth Vader and Tree
dp
,
matrices
2200
x1347
1335F
Robots on a Grid
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
matrices
2200
x1946
954F
Runner's Problem
dp
,
matrices
,
sortings
2100
x966
821E
Okabe and El Psy Kongroo
dp
,
matrices
2100
x1401
551D
GukiZ and Binary Operations
combinatorics
,
implementation
,
math
,
matrices
,
number theory
2100
x1713
1252K
Addition Robot
data structures
,
math
,
matrices
2100
x1774
1023E
Down or Right
constructive algorithms
,
interactive
,
matrices
2100
x1944
1538E
Funny Substrings
data structures
,
hashing
,
implementation
,
matrices
,
strings
2100
x2778
1332E
Height All the Same
combinatorics
,
constructive algorithms
,
math
,
matrices
2100
x3540
1117D
Magic Gems
dp
,
math
,
matrices
2100
x3979
852B
Neural Network country
dp
,
matrices
2000
x1341
696C
PLEASE
combinatorics
,
dp
,
implementation
,
math
,
matrices
2000
x2037
621E
Wet Shark and Blocks
dp
,
matrices
2000
x2694
717D
Dexterina’s Lab
games
,
matrices
,
probabilities
1900
x1319
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