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Pinely Round 4 (Div. 1 + Div. 2)
16:04:52
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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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Status
Standings
Custom test
Problems
#
Name
1750F
Majority
combinatorics
,
dp
,
math
,
strings
2700
x886
1750E
Bracket Cost
binary search
,
data structures
,
divide and conquer
,
dp
,
greedy
,
strings
2400
x1384
1749F
Distance to the Path
data structures
,
dfs and similar
,
trees
2800
x491
1749E
Cactus Wall
constructive algorithms
,
dfs and similar
,
graphs
,
shortest paths
2400
x1662
1748F
Circular Xor Reversal
bitmasks
,
constructive algorithms
3000
x328
1747E
List Generation
combinatorics
,
dp
,
math
2900
x491
1746G
Olympiad Training
binary search
,
data structures
,
dp
,
flows
,
geometry
,
implementation
,
sortings
3500
x92
1746F
Kazaee
data structures
,
hashing
,
probabilities
2800
x1631
1746E2
Joking (Hard Version)
dp
,
interactive
3200
x384
1746E1
Joking (Easy Version)
binary search
,
constructive algorithms
,
interactive
,
ternary search
2500
x1407
1743G
Antifibonacci Cut
bitmasks
,
combinatorics
,
constructive algorithms
,
data structures
,
dp
,
hashing
,
math
3000
x250
1743E
FTL
binary search
,
dp
2400
x1518
1740I
Arranging Crystal Balls
data structures
,
divide and conquer
,
divide and conquer
,
dp
,
geometry
,
graphs
,
number theory
3500
x111
1740H
MEX Tree Manipulation
data structures
,
trees
3300
x209
1740G
Dangerous Laser Power
constructive algorithms
,
dsu
,
sortings
3100
x184
1740F
Conditional Mix
combinatorics
,
dp
,
math
2600
x781
1739F
Keyboard Design
bitmasks
,
data structures
,
dp
,
string suffix structures
,
strings
2600
x520
1739E
Cleaning Robot
bitmasks
,
dp
2400
x1202
1738H
Palindrome Addicts
data structures
,
strings
3300
x232
1738G
Anti-Increasing Addicts
constructive algorithms
,
dp
,
greedy
,
math
2900
x418
1738F
Connectivity Addicts
constructive algorithms
,
dsu
,
graphs
,
greedy
,
interactive
,
shortest paths
,
trees
2400
x1202
1737G
Ela Takes Dancing Class
binary search
,
data structures
3500
x113
1737F
Ela and Prime GCD
constructive algorithms
,
math
,
number theory
3300
x123
1737E
Ela Goes Hiking
combinatorics
,
dp
,
math
,
probabilities
2500
x910
1736E
Swap and Take
dp
,
greedy
2600
x676
1736C2
Good Subarrays (Hard Version)
binary search
,
data structures
,
dp
,
two pointers
2400
x1264
1735F
Pebbles and Beads
data structures
,
geometry
2900
x219
1735E
House Planning
constructive algorithms
,
data structures
,
graph matchings
,
greedy
2400
x1035
1734F
Zeros and Ones
bitmasks
,
divide and conquer
,
dp
,
math
2500
x782
1733E
Conveyor
constructive algorithms
,
dp
,
math
2700
x1123
1732E
Location
data structures
,
dp
,
math
,
number theory
2800
x422
1732D2
Balance (Hard version)
brute force
,
data structures
,
number theory
2400
x1382
1731F
Function Sum
brute force
,
combinatorics
,
dp
,
fft
,
math
2500
x677
1730F
Almost Sorted
bitmasks
,
data structures
,
dp
2700
x515
1730E
Maximums and Minimums
combinatorics
,
data structures
,
divide and conquer
,
number theory
2700
x630
1728G
Illumination
binary search
,
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
two pointers
2700
x440
1728F
Fishermen
flows
,
graph matchings
,
greedy
3100
x419
1726H
Mainak and the Bleeding Polygon
binary search
,
geometry
,
implementation
,
math
3500
x83
1726G
A Certain Magical Party
combinatorics
,
data structures
,
greedy
,
sortings
3300
x288
1726F
Late For Work (submissions are not allowed)
data structures
,
greedy
,
schedules
,
shortest paths
2900
x131
1726E
Almost Perfect
combinatorics
,
fft
,
math
2400
x1382
1725L
Lemper Cooking Competition
data structures
2400
x893
1725K
Kingdom of Criticism
data structures
,
dsu
2500
x650
1725J
Journey
dp
,
trees
2500
x370
1725I
Imitating the Key Tree
combinatorics
,
dsu
,
trees
2800
x193
1725E
Electrical Efficiency
combinatorics
,
data structures
,
dp
,
math
,
number theory
,
trees
2500
x453
1725D
Deducing Sortability
binary search
,
bitmasks
,
math
2900
x119
1721F
Matching Reduction
brute force
,
constructive algorithms
,
dfs and similar
,
flows
,
graph matchings
,
graphs
,
interactive
2800
x385
1720E
Misha and Paintings
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
2700
x753
1720D2
Xor-Subsequence (hard version)
bitmasks
,
data structures
,
dp
,
strings
,
trees
2400
x1785
1718F
Burenka, an Array and Queries
data structures
,
math
,
number theory
3300
x152
1718E
Impressionism
constructive algorithms
,
graphs
,
implementation
,
math
3500
x106
1718D
Permutation for Burenka
data structures
,
graph matchings
,
greedy
,
math
,
trees
3300
x298
1718C
Tonya and Burenka-179
data structures
,
greedy
,
math
,
number theory
2400
x1554
1717F
Madoka and The First Session
constructive algorithms
,
flows
,
graph matchings
,
graphs
,
implementation
2500
x525
1716F
Bags with Balls
combinatorics
,
dp
,
math
,
number theory
2500
x1018
1716E
Swap and Maximum Block
bitmasks
,
data structures
,
dfs and similar
,
divide and conquer
,
dp
2500
x1046
1715F
Crop Squares
constructive algorithms
,
geometry
,
interactive
,
math
2700
x511
1715E
Long Way Home
data structures
,
divide and conquer
,
dp
,
geometry
,
graphs
,
greedy
,
shortest paths
2400
x1668
1713F
Lost Array
bitmasks
,
combinatorics
,
constructive algorithms
,
dp
,
math
2900
x524
1713E
Cross Swapping
2-sat
,
data structures
,
dsu
,
greedy
,
matrices
2400
x1550
1712F
Triameter
binary search
,
data structures
,
dfs and similar
,
trees
3200
x309
1712E2
LCM Sum (hard version)
brute force
,
data structures
,
math
,
number theory
,
two pointers
2500
x1238
1710E
Two Arrays
binary search
,
games
,
graph matchings
2400
x489
1710D
Recover the Tree
constructive algorithms
,
trees
3400
x415
1710C
XOR Triangle
bitmasks
,
brute force
,
constructive algorithms
,
dp
,
greedy
,
math
2500
x1324
1709F
Multiset of Strings
bitmasks
,
brute force
,
dp
,
fft
,
flows
,
graphs
,
math
,
meet-in-the-middle
,
trees
2500
x539
1709E
XOR Tree
bitmasks
,
data structures
,
dfs and similar
,
dsu
,
greedy
,
trees
2400
x2571
1707F
Bugaboo
bitmasks
,
constructive algorithms
,
dp
,
number theory
3500
x148
1707E
Replace
binary search
,
data structures
3500
x578
1707D
Partial Virtual Trees
combinatorics
,
dfs and similar
,
dp
,
math
,
trees
3000
x598
1707C
DFS Trees
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2400
x1461
1706D2
Chopping Carrots (Hard Version)
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
2400
x1678
1705F
Mark and the Online Exam
bitmasks
,
constructive algorithms
,
interactive
,
probabilities
2900
x589
1704H2
Game of AI (hard version)
combinatorics
,
fft
,
math
3500
x80
1704H1
Game of AI (easy version)
combinatorics
,
constructive algorithms
,
dp
,
fft
,
math
3200
x177
1704G
Mio and Lucky Array
constructive algorithms
,
fft
,
math
,
strings
3500
x103
1704F
Colouring Game
constructive algorithms
,
dp
,
games
2600
x951
1701F
Points
combinatorics
,
data structures
,
implementation
,
math
,
matrices
2500
x910
1701E
Text Editor
brute force
,
dp
,
greedy
,
strings
2500
x1093
1700F
Puzzle
constructive algorithms
,
dp
,
greedy
2600
x872
1700E
Serega the Pirate
brute force
,
constructive algorithms
2600
x841
1699E
Three Days Grace
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
2600
x1120
1698G
Long Binary String
bitmasks
,
math
,
matrices
,
meet-in-the-middle
,
number theory
2900
x308
1698F
Equal Reversal
constructive algorithms
,
graphs
,
implementation
,
math
2800
x608
1697F
Too Many Constraints
2-sat
,
constructive algorithms
,
graphs
,
implementation
2800
x547
1697E
Coloring
brute force
,
combinatorics
,
constructive algorithms
,
dp
,
geometry
,
graphs
,
greedy
,
implementation
,
math
2400
x1166
1696H
Maximum Product?
brute force
,
combinatorics
,
dp
,
greedy
,
implementation
,
math
,
two pointers
3500
x159
1696G
Fishingprince Plays With Array Again
brute force
,
data structures
,
geometry
,
math
3300
x269
1696F
Tree Recovery
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
trees
2600
x864
1695E
Ambiguous Dominoes
constructive algorithms
,
dfs and similar
,
graphs
2700
x440
1693F
I Might Be Wrong
binary search
,
greedy
,
two pointers
3400
x391
1693E
Outermost Maximums
data structures
,
greedy
3400
x411
1693D
Decinc Dividing
brute force
,
data structures
,
divide and conquer
,
dp
,
greedy
2800
x800
1691F
K-Set Tree
combinatorics
,
dfs and similar
,
dp
,
math
,
trees
2500
x942
1689E
ANDfinity
bitmasks
,
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
2500
x1186
1687F
Koishi's Unconscious Permutation
fft
,
math
3500
x82
1687E
Become Big For Me
combinatorics
,
constructive algorithms
,
greedy
,
math
,
number theory
3500
x222
1687D
Cute number
binary search
,
brute force
,
data structures
,
dsu
,
implementation
,
math
2900
x567
1687C
Sanae and Giant Robot
binary search
,
brute force
,
data structures
,
dsu
,
greedy
,
sortings
2500
x1357
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