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Pinely Round 4 (Div. 1 + Div. 2)
33:59:43
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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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Problems
#
Name
1599E
Two Arrays
data structures
,
matrices
3200
x67
1540E
Tasty Dishes
math
,
matrices
3500
x102
1266H
Red-Blue Graph
dp
,
graphs
,
math
,
matrices
,
meet-in-the-middle
3400
x102
1184D2
Parallel Universes (Hard)
math
,
matrices
3100
x104
1995E2
Let Me Teach You a Lesson (Hard Version)
bitmasks
,
data structures
,
dp
,
graphs
,
matrices
,
two pointers
x122
446E
DZY Loves Bridges
math
,
matrices
3100
x122
865G
Flowers and Chocolate
combinatorics
,
math
,
matrices
3300
x135
267C
Berland Traffic
math
,
matrices
2700
x160
177G2
Fibonacci Strings
matrices
,
strings
2600
x178
86E
Long sequence
brute force
,
math
,
matrices
2700
x180
1995E1
Let Me Teach You a Lesson (Easy Version)
data structures
,
dp
,
matrices
,
two pointers
x183
1402C
Star Trek
*special problem
,
combinatorics
,
dfs and similar
,
dp
,
games
,
graphs
,
matrices
,
trees
2600
x201
989E
A Trance of Nightfall
dp
,
geometry
,
matrices
,
probabilities
2700
x230
618G
Combining Slimes
dp
,
math
,
matrices
,
probabilities
3300
x232
1474F
1 2 3 4 ...
dp
,
math
,
matrices
3000
x243
1197F
Coloring Game
dp
,
games
,
matrices
2700
x245
472F
Design Tutorial: Change the Goal
constructive algorithms
,
math
,
matrices
2700
x250
1375I
Cubic Lattice
geometry
,
math
,
matrices
,
number theory
3500
x256
1864H
Asterism Stream
dp
,
math
,
matrices
3200
x277
497E
Subsequences Return
dp
,
matrices
2900
x284
1662C
European Trip
dp
,
graphs
,
math
,
matrices
x295
1698G
Long Binary String
bitmasks
,
math
,
matrices
,
meet-in-the-middle
,
number theory
2900
x308
832E
Vasya and Shifts
matrices
2600
x316
1672G
Cross Xor
constructive algorithms
,
graphs
,
math
,
matrices
3200
x319
60E
Mushroom Gnomes
math
,
matrices
2600
x321
193E
Fibonacci Number
brute force
,
math
,
matrices
2900
x327
93D
Flags
dp
,
math
,
matrices
2500
x342
51E
Pentagon
combinatorics
,
graphs
,
matrices
2400
x373
446D
DZY Loves Games
math
,
matrices
,
probabilities
2800
x388
917C
Pollywog
combinatorics
,
dp
,
matrices
2900
x390
107D
Crime Management
dp
,
graphs
,
matrices
2400
x402
1511F
Chainword
brute force
,
data structures
,
dp
,
matrices
,
string suffix structures
,
strings
2700
x424
923E
Perpetual Subtraction
fft
,
math
,
matrices
3100
x445
1344F
Piet's Palette
matrices
3200
x447
662A
Gambling Nim
bitmasks
,
math
,
matrices
,
probabilities
2400
x451
498E
Stairs and Lines
dp
,
matrices
2700
x454
736D
Permutations
math
,
matrices
2800
x455
453D
Little Pony and Elements of Harmony
dp
,
matrices
3000
x464
193C
Hamming Distance
constructive algorithms
,
greedy
,
math
,
matrices
2400
x508
1916H2
Matrix Rank (Hard Version)
combinatorics
,
dp
,
math
,
matrices
,
string suffix structures
2700
x519
946F
Fibonacci String Subsequences
combinatorics
,
dp
,
matrices
2400
x537
578F
Mirror Box
matrices
,
trees
3200
x542
351C
Jeff and Brackets
dp
,
matrices
2500
x543
1152F1
Neko Rules the Catniverse (Small Version)
bitmasks
,
dp
,
matrices
2800
x546
167E
Wizards and Bets
dfs and similar
,
graphs
,
math
,
matrices
2900
x556
1025E
Colored Cubes
constructive algorithms
,
implementation
,
matrices
2700
x562
1286D
LCC
data structures
,
math
,
matrices
,
probabilities
3100
x571
1970E3
Trails (Hard)
dp
,
matrices
2200
x577
385E
Bear in the Field
math
,
matrices
2300
x577
593E
Strange Calculation and Cats
dp
,
matrices
2400
x586
392C
Yet Another Number Sequence
combinatorics
,
math
,
matrices
x586
1616F
Tricolor Triangles
brute force
,
graphs
,
math
,
matrices
2900
x588
1916H1
Matrix Rank (Easy Version)
brute force
,
combinatorics
,
dp
,
math
,
matrices
2700
x600
1152F2
Neko Rules the Catniverse (Large Version)
bitmasks
,
dp
,
matrices
3000
x624
1411G
No Game No Life
bitmasks
,
games
,
math
,
matrices
2700
x646
113D
Museum
math
,
matrices
,
probabilities
2700
x659
1808E2
Minibuses on Venus (medium version)
combinatorics
,
divide and conquer
,
dp
,
matrices
2500
x672
1844G
Tree Weights
bitmasks
,
constructive algorithms
,
data structures
,
dfs and similar
,
implementation
,
math
,
matrices
,
number theory
,
trees
3000
x690
1895F
Fancy Arrays
combinatorics
,
dp
,
math
,
matrices
2600
x707
506E
Mr. Kitayuta's Gift
combinatorics
,
dp
,
matrices
,
strings
3000
x711
147B
Smile House
binary search
,
graphs
,
matrices
2500
x766
1681E
Labyrinth Adventures
data structures
,
dp
,
matrices
,
shortest paths
2600
x774
575A
Fibonotci
data structures
,
math
,
matrices
2700
x774
1380F
Strange Addition
data structures
,
dp
,
matrices
2600
x775
1919F2
Wine Factory (Hard Version)
data structures
,
dp
,
flows
,
greedy
,
matrices
2800
x786
226C
Anniversary
data structures
,
implementation
,
math
,
matrices
,
number theory
2400
x853
837F
Prefix Sums
binary search
,
brute force
,
combinatorics
,
math
,
matrices
2400
x867
891E
Lust
combinatorics
,
math
,
matrices
3000
x898
1701F
Points
combinatorics
,
data structures
,
implementation
,
math
,
matrices
2500
x910
1106F
Lunar New Year and a Recursive Sequence
math
,
matrices
,
number theory
2400
x962
1970E2
Trails (Medium)
dp
,
matrices
2000
x1011
780F
Axel and Marston in Bitland
bitmasks
,
dp
,
graphs
,
matrices
2400
x1033
632F
Magic Matrix
brute force
,
divide and conquer
,
graphs
,
matrices
,
trees
2400
x1056
1924C
Fractal Origami
geometry
,
math
,
matrices
2400
x1098
917D
Stranger Trees
dp
,
math
,
matrices
,
trees
2600
x1108
1151F
Sonya and Informatics
combinatorics
,
dp
,
matrices
,
probabilities
2300
x1177
954F
Runner's Problem
dp
,
matrices
,
sortings
2100
x1185
696D
Legen...
data structures
,
dp
,
matrices
,
strings
2500
x1259
1458C
Latin Square
math
,
matrices
2700
x1272
1814E
Chain Chips
data structures
,
dp
,
matrices
2300
x1297
576D
Flights for Regular Customers
dp
,
matrices
2700
x1338
1427E
Xum
bitmasks
,
constructive algorithms
,
math
,
matrices
,
number theory
2500
x1363
717D
Dexterina’s Lab
games
,
matrices
,
probabilities
1900
x1389
514E
Darth Vader and Tree
dp
,
matrices
2200
x1403
852B
Neural Network country
dp
,
matrices
2000
x1410
821E
Okabe and El Psy Kongroo
dp
,
matrices
2100
x1444
1743F
Intersection and Union
data structures
,
dp
,
matrices
,
probabilities
2300
x1455
750E
New Year and Old Subsequence
data structures
,
divide and conquer
,
dp
,
matrices
2600
x1528
1713E
Cross Swapping
2-sat
,
data structures
,
dsu
,
greedy
,
matrices
2400
x1549
1101G
(Zero XOR Subset)-less
math
,
matrices
2300
x1657
348D
Turtles
dp
,
matrices
2500
x1661
1761E
Make It Connected
binary search
,
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
matrices
,
trees
,
two pointers
2400
x1771
1252K
Addition Robot
data structures
,
math
,
matrices
2100
x1829
551D
GukiZ and Binary Operations
combinatorics
,
implementation
,
math
,
matrices
,
number theory
2100
x1949
1609E
William The Oblivious
bitmasks
,
data structures
,
dp
,
matrices
2400
x1977
1023E
Down or Right
constructive algorithms
,
interactive
,
matrices
2100
x2001
959F
Mahmoud and Ehab and yet another xor task
bitmasks
,
dp
,
math
,
matrices
2400
x2019
696C
PLEASE
combinatorics
,
dp
,
implementation
,
math
,
matrices
2000
x2072
1335F
Robots on a Grid
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
matrices
2200
x2166
691E
Xor-sequences
matrices
1900
x2462
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