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Pinely Round 4 (Div. 1 + Div. 2)
39:10:54
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Difficulty:
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geometry
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
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number theory
probabilities
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sortings
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strings
ternary search
trees
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Problems
#
Name
1517H
Fly Around the World
dp
,
geometry
3500
x68
1427H
Prison Break
binary search
,
games
,
geometry
,
ternary search
3500
x73
1326G
Spiderweb Trees
dp
,
geometry
,
trees
3500
x75
1726H
Mainak and the Bleeding Polygon
binary search
,
geometry
,
implementation
,
math
3500
x83
1628F
Spaceship Crisis Management
binary search
,
data structures
,
geometry
,
sortings
3500
x86
1746G
Olympiad Training
binary search
,
data structures
,
dp
,
flows
,
geometry
,
implementation
,
sortings
3500
x92
1641F
Covering Circle
geometry
3500
x97
1740I
Arranging Crystal Balls
data structures
,
divide and conquer
,
divide and conquer
,
dp
,
geometry
,
graphs
,
number theory
3500
x111
799G
Cut the pie
binary search
,
data structures
,
geometry
3500
x114
1503F
Balance the Cards
constructive algorithms
,
data structures
,
divide and conquer
,
geometry
,
graphs
,
implementation
3500
x137
1071E
Rain Protection
binary search
,
geometry
3500
x138
1375I
Cubic Lattice
geometry
,
math
,
matrices
,
number theory
3500
x256
1220G
Geolocation
geometry
3400
x50
853E
Lada Malina
data structures
,
geometry
3400
x65
1045F
Shady Lady
geometry
,
math
3400
x99
1912I
Innovative Washing Machine
geometry
,
math
,
two pointers
3300
x56
949F
Astronomy
geometry
,
probabilities
3300
x58
1578I
Interactive Rays
geometry
,
interactive
3300
x59
1936F
Grand Finale: Circles
binary search
,
geometry
3300
x75
771F
Bear and Isomorphic Points
geometry
,
two pointers
3300
x80
1949A
Grove
brute force
,
dfs and similar
,
dp
,
geometry
,
probabilities
3300
x98
696F
...Dary!
binary search
,
geometry
,
two pointers
3300
x120
1984H
Tower Capturing
combinatorics
,
dp
,
geometry
3300
x144
1381E
Origami
geometry
,
math
,
sortings
3300
x150
1787H
Codeforces Scoreboard
binary search
,
data structures
,
dp
,
geometry
3300
x209
1548D2
Gregor and the Odd Cows (Hard)
brute force
,
geometry
,
math
,
number theory
3300
x240
607E
Cross Sum
binary search
,
geometry
3300
x250
1696G
Fishingprince Plays With Array Again
brute force
,
data structures
,
geometry
,
math
3300
x269
704E
Iron Man
data structures
,
geometry
,
trees
3300
x279
1534G
A New Beginning
data structures
,
dp
,
geometry
,
sortings
3300
x547
645G
Armistice Area Apportionment
binary search
,
geometry
3200
x112
744D
Hongcow Draws a Circle
geometry
3200
x119
1045E
Ancient civilizations
constructive algorithms
,
geometry
3200
x176
1584G
Eligible Segments
geometry
3200
x205
1446F
Line Distance
binary search
,
data structures
,
geometry
3200
x327
1368G
Shifting Dominoes
data structures
,
geometry
,
graphs
,
trees
3200
x590
269E
String Theory
geometry
,
math
,
strings
3100
x108
780H
Intranet of Buses
binary search
,
geometry
,
implementation
,
two pointers
3100
x118
388E
Fox and Meteor Shower
geometry
3100
x120
1666G
Global Warming
geometry
,
math
3100
x136
1167G
Low Budget Inception
brute force
,
geometry
3100
x149
442E
Gena and Second Distance
geometry
3100
x172
792F
Mages and Monsters
data structures
,
geometry
3100
x202
528E
Triangles 3000
geometry
,
sortings
3100
x216
1070M
Algoland and Berland
constructive algorithms
,
divide and conquer
,
geometry
3000
x66
1218B
Guarding warehouses
data structures
,
geometry
3000
x70
223D
Spider
geometry
,
graphs
3000
x70
142E
Help Greg the Dwarf 2
geometry
3000
x80
154E
Martian Colony
geometry
3000
x92
852H
Bob and stages
dp
,
geometry
3000
x150
372E
Drawing Circles is Fun
combinatorics
,
geometry
3000
x170
223E
Planar Graph
flows
,
geometry
,
graphs
3000
x191
666D
Chain Reaction
brute force
,
geometry
3000
x276
1572E
Polygon
binary search
,
dp
,
geometry
3000
x283
1920F2
Smooth Sailing (Hard Version)
binary search
,
data structures
,
dsu
,
geometry
,
graphs
,
trees
3000
x434
1175G
Yet Another Partiton Problem
data structures
,
divide and conquer
,
dp
,
geometry
,
two pointers
3000
x448
1508D
Swap Pass
constructive algorithms
,
geometry
,
sortings
3000
x546
1571H
Laser Beams
*special problem
,
geometry
,
probabilities
2900
x48
68E
Contact
geometry
2900
x71
73F
Plane of Tanks
brute force
,
geometry
2900
x77
128E
Birthday
geometry
,
math
2900
x97
1402B
Roads
*special problem
,
geometry
,
sortings
2900
x110
1386B
Mixture
*special problem
,
data structures
,
geometry
,
math
,
sortings
2900
x121
1578F
Framing Pictures
geometry
2900
x148
1901F
Landscaping
binary search
,
geometry
,
two pointers
2900
x149
1735F
Pebbles and Beads
data structures
,
geometry
2900
x219
497D
Gears
brute force
,
geometry
,
math
2900
x226
886F
Symmetric Projections
geometry
2900
x266
1860F
Evaluate RBS
data structures
,
geometry
,
implementation
,
math
,
sortings
2900
x268
603D
Ruminations on Ruminants
geometry
,
math
2900
x340
598F
Cut Length
geometry
2900
x362
611G
New Year and Cake
geometry
,
two pointers
2900
x431
1359F
RC Kaboom Show
binary search
,
brute force
,
data structures
,
geometry
,
math
2900
x533
1444D
Rectangular Polyline
constructive algorithms
,
dp
,
geometry
2900
x563
1146H
Satanic Panic
dp
,
geometry
2900
x596
28E
DravDe saves the world
geometry
,
math
2800
x87
1906D
Spaceship Exploration
binary search
,
geometry
2800
x104
887E
Little Brother
binary search
,
geometry
,
sortings
2800
x163
962G
Visible Black Areas
data structures
,
dsu
,
geometry
,
trees
2800
x177
717I
Cowboy Beblop at his computer
geometry
2800
x203
575E
Spectator Riots
geometry
2800
x282
568D
Sign Posts
brute force
,
geometry
,
math
2800
x306
1826F
Fading into Fog
geometry
,
interactive
,
math
,
probabilities
2800
x346
77E
Martian Food
geometry
2800
x370
776F
Sherlock's bet to Moriarty
constructive algorithms
,
data structures
,
divide and conquer
,
geometry
,
graphs
,
implementation
,
trees
2800
x429
559D
Randomizer
combinatorics
,
geometry
,
probabilities
2800
x430
377E
Cookie Clicker
dp
,
geometry
2800
x449
815D
Karen and Cards
binary search
,
combinatorics
,
data structures
,
geometry
2800
x606
44F
BerPaint
geometry
,
graphs
2700
x66
1423E
5G Antenna Towers
geometry
2700
x76
107E
Darts
geometry
,
probabilities
2700
x128
549E
Sasha Circle
geometry
,
math
2700
x147
309D
Tennis Rackets
brute force
,
geometry
2700
x174
958E3
Guard Duty (hard)
geometry
2700
x182
54E
Vacuum Сleaner
geometry
2700
x189
243D
Cubes
data structures
,
dp
,
geometry
,
two pointers
2700
x211
592E
BCPC
binary search
,
geometry
,
two pointers
2700
x213
989E
A Trance of Nightfall
dp
,
geometry
,
matrices
,
probabilities
2700
x230
293D
Ksusha and Square
geometry
,
math
,
probabilities
,
two pointers
2700
x236
460E
Roland and Rose
brute force
,
geometry
,
math
,
sortings
2700
x340
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