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Pinely Round 4 (Div. 1 + Div. 2)
00:11:10
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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
1080F
Katya and Segments Sets
data structures
,
interactive
,
sortings
2400
x693
1080E
Sonya and Matrix Beauty
strings
2400
x1059
1080D
Olya and magical square
constructive algorithms
,
implementation
,
math
2000
x1535
1078E
Negative Time Summation
constructive algorithms
3400
x87
1077F2
Pictures with Kittens (hard version)
data structures
,
dp
2100
x3197
1076G
Array Game
data structures
,
games
3000
x497
1076F
Summer Practice Report
dp
,
greedy
2500
x629
1073G
Yet Another LCP Problem
data structures
,
string suffix structures
2600
x898
1073F
Choosing Two Paths
dfs and similar
,
dp
,
greedy
,
trees
2500
x530
1073E
Segment Sum
bitmasks
,
combinatorics
,
dp
,
math
2300
x2503
1071E
Rain Protection
binary search
,
geometry
3500
x141
1070M
Algoland and Berland
constructive algorithms
,
divide and conquer
,
geometry
3000
x66
1070L
Odd Federalization
constructive algorithms
2600
x293
1070J
Streets and Avenues in Berhattan
dp
2300
x684
1070I
Privatization of Roads in Berland
flows
,
graph matchings
,
graphs
2400
x644
1070G
Monsters and Potions
brute force
,
dp
,
greedy
,
implementation
2300
x824
1070E
Getting Deals Done
binary search
,
data structures
2100
x1373
1070C
Cloud Computing
data structures
,
greedy
2000
x2011
1070B
Berkomnadzor
data structures
,
greedy
2400
x596
1070A
Find a Number
dp
,
graphs
,
number theory
,
shortest paths
2200
x2293
1067E
Random Forest Rank
dp
,
graph matchings
,
math
,
trees
2800
x434
1067D
Computer Game
dp
,
greedy
,
math
,
probabilities
3100
x377
1067C
Knights
constructive algorithms
2600
x617
1066F
Yet another 2D Walking
dp
2100
x2011
1065G
Fibonacci Suffix
strings
2700
x244
1065F
Up and Down the Tree
dfs and similar
,
dp
,
trees
2500
x1152
1065E
Side Transmutations
combinatorics
,
strings
2300
x1041
1065D
Three Pieces
dfs and similar
,
dp
,
shortest paths
2200
x1289
1063F
String Journey
data structures
,
dp
,
string suffix structures
3300
x827
1063E
Lasers and Mirrors
constructive algorithms
,
math
3000
x343
1063D
Candies for Children
brute force
,
math
2600
x428
1062F
Upgrading Cities
dfs and similar
,
graphs
2900
x572
1062E
Company
binary search
,
data structures
,
dfs and similar
,
greedy
,
trees
2300
x1746
1061F
Lost Root
interactive
,
probabilities
2400
x723
1061E
Politics
flows
,
graphs
2600
x526
1061D
TV Shows
data structures
,
greedy
,
implementation
,
sortings
2000
x2311
1060H
Sophisticated Device
constructive algorithms
3300
x212
1060G
Balls and Pockets
data structures
3400
x145
1060F
Shrinking Tree
combinatorics
,
dp
2900
x583
1060E
Sergey and Subway
dfs and similar
,
dp
,
trees
2000
x3098
1059E
Split the Tree
binary search
,
data structures
,
dp
,
greedy
,
trees
2400
x1374
1059D
Nature Reserve
binary search
,
geometry
,
ternary search
2200
x2720
1057C
Tanya and Colored Candies
*special problem
,
dp
2000
x892
1056H
Detect Robots
data structures
,
strings
3200
x154
1056G
Take Metro
brute force
,
data structures
,
graphs
2900
x247
1056F
Write The Contest
binary search
,
dp
,
math
2500
x518
1056E
Check Transcription
brute force
,
data structures
,
hashing
,
strings
2100
x2204
1055G
Jellyfish Nightmare
3500
x79
1055F
Tree and XOR
strings
,
trees
2900
x453
1055E
Segments on the Line
binary search
,
dp
2500
x721
1055D
Refactoring
greedy
,
implementation
,
strings
2400
x619
1054H
Epic Convolution
chinese remainder theorem
,
fft
,
math
,
number theory
3500
x177
1054G
New Road Network
constructive algorithms
,
greedy
,
math
3300
x272
1054F
Electric Scheme
flows
,
graph matchings
2700
x310
1054E
Chips Puzzle
constructive algorithms
,
implementation
,
math
2400
x481
1053E
Euler tour
constructive algorithms
,
trees
3500
x199
1051G
Distinctification
data structures
,
dsu
,
greedy
2900
x383
1051F
The Shortest Statement
graphs
,
shortest paths
,
trees
2400
x2774
1051E
Vasya and Big Integers
binary search
,
data structures
,
dp
,
hashing
,
strings
2600
x918
1046I
Say Hello
geometry
2300
x358
1045J
Moonwalk challenge
data structures
,
strings
,
trees
2600
x169
1045H
Self-exploration
math
2400
x366
1045G
AI robots
data structures
2200
x1598
1045F
Shady Lady
geometry
,
math
3400
x99
1045E
Ancient civilizations
constructive algorithms
,
geometry
3200
x176
1045D
Interstellar battle
math
,
probabilities
,
trees
2200
x664
1045C
Hyperspace Highways
dfs and similar
,
graphs
,
trees
2300
x683
1045B
Space Isaac
hashing
,
number theory
2400
x507
1045A
Last chance
data structures
,
flows
,
graph matchings
,
graphs
,
trees
2500
x389
1044F
DFS
data structures
2700
x552
1044E
Grid Sort
implementation
3100
x116
1044D
Deduction Queries
data structures
,
dsu
2400
x990
1044C
Optimal Polygon Perimeter
dp
,
geometry
2100
x1335
1043G
Speckled Band
data structures
,
divide and conquer
,
hashing
,
string suffix structures
,
strings
3500
x223
1043F
Make It One
bitmasks
,
combinatorics
,
dp
,
math
,
number theory
,
shortest paths
2500
x2301
1042F
Leaf Sets
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2400
x1257
1042E
Vasya and Magic Matrix
dp
,
math
,
probabilities
2300
x1719
1041F
Ray in the tube
data structures
,
divide and conquer
,
dp
,
math
2500
x1465
1039E
Summer Oenothera Exhibition
data structures
3400
x269
1039D
You Are Given a Tree
data structures
,
dp
,
trees
2800
x1717
1039C
Network Safety
dfs and similar
,
dsu
,
graphs
,
math
,
sortings
2200
x1316
1039B
Subway Pursuit
binary search
,
interactive
,
probabilities
2100
x2337
1039A
Timetable
constructive algorithms
,
data structures
,
greedy
,
math
2300
x773
1038F
Wrap Around
dp
,
strings
2900
x317
1038E
Maximum Matching
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
2400
x963
1037H
Security
data structures
,
string suffix structures
3200
x1006
1037G
A Game on Strings
games
3200
x299
1037F
Maximum Reduction
combinatorics
,
data structures
,
math
2500
x990
1037E
Trips
graphs
2200
x2855
1036G
Sources and Sinks
bitmasks
,
brute force
,
dfs and similar
2700
x367
1036F
Relatively Prime Powers
combinatorics
,
math
,
number theory
2400
x1574
1036E
Covered Points
fft
,
geometry
,
number theory
2400
x1624
1034E
Little C Loves 3 III
bitmasks
,
dp
,
math
3200
x620
1034D
Intervals of Intervals
binary search
,
data structures
,
two pointers
3500
x447
1034C
Region Separation
combinatorics
,
dp
,
number theory
,
trees
2700
x867
1034B
Little C Loves 3 II
brute force
,
constructive algorithms
,
flows
,
graph matchings
2200
x2097
1033G
Chip Game
games
3500
x381
1033F
Boolean Computer
bitmasks
,
brute force
,
fft
,
math
2800
x369
1033E
Hidden Bipartite Graph
binary search
,
constructive algorithms
,
dfs and similar
,
graphs
,
interactive
2800
x592
1033D
Divisors
interactive
,
math
,
number theory
2000
x2367
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