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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
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
1791B
Following Directions
geometry
,
implementation
800
x41737
1369A
FashionabLee
geometry
,
math
800
x35569
1926B
Vlad and Shapes
geometry
,
implementation
800
x29574
1622A
Construct a Rectangle
geometry
,
math
800
x29453
1398A
Bad Triangle
geometry
,
math
800
x26970
1312A
Two Regular Polygons
geometry
,
greedy
,
math
,
number theory
800
x25318
1466A
Bovine Dilemma
brute force
,
geometry
,
math
800
x22264
1806A
Walking Master
geometry
,
greedy
,
math
800
x22235
1064A
Make a triangle!
brute force
,
geometry
,
math
800
x21690
1713A
Traveling Salesman Problem
geometry
,
greedy
,
implementation
800
x21652
1928A
Rectangle Cutting
geometry
,
math
800
x21085
1422A
Fence
geometry
,
math
800
x20621
1816A
Ian Visits Mary
constructive algorithms
,
geometry
,
number theory
800
x16922
1642A
Hard Way
geometry
800
x15980
1781A
Parallel Projection
geometry
,
math
800
x14847
1740B
Jumbo Extra Cheese 2
geometry
,
greedy
,
sortings
800
x13535
900A
Find Extra One
geometry
,
implementation
800
x13366
181A
Series of Crimes
brute force
,
geometry
,
implementation
800
x6697
1795B
Ideal Point
brute force
,
geometry
,
greedy
900
x21147
1845B
Come Together
geometry
,
implementation
,
math
900
x20839
6A
Triangle
brute force
,
geometry
900
x19059
1047B
Cover Points
geometry
,
math
900
x16890
706A
Beru-taxi
brute force
,
geometry
,
implementation
900
x14249
127A
Wasted Time
geometry
900
x10727
766B
Mahmoud and a Triangle
constructive algorithms
,
geometry
,
greedy
,
math
,
number theory
,
sortings
1000
x31076
1515B
Phoenix and Puzzle
brute force
,
geometry
,
math
,
number theory
1000
x24111
1199B
Water Lily
geometry
,
math
1000
x19641
1539A
Contest Start
combinatorics
,
geometry
,
greedy
,
math
1000
x19585
1620B
Triangles on a Rectangle
geometry
,
greedy
,
math
1000
x19547
1450B
Balls of Steel
brute force
,
geometry
,
greedy
1000
x14873
1248A
Integer Points
geometry
,
math
1000
x13751
157B
Trace
geometry
,
sortings
1000
x12844
859B
Lazy Security Guard
brute force
,
geometry
,
math
1000
x6738
270A
Fancy Fence
geometry
,
implementation
,
math
1100
x43425
224A
Parallelepiped
brute force
,
geometry
,
math
1100
x25345
1850E
Cardboard for Pictures
binary search
,
geometry
,
implementation
,
math
1100
x20752
1869B
2D Traveling
geometry
,
math
,
shortest paths
,
sortings
1100
x14349
1030B
Vasya and Cornfield
geometry
1100
x11856
842B
Gleb And Pizza
geometry
1100
x10046
667A
Pouring Rain
geometry
,
math
1100
x7781
596A
Wilbur and Swimming Pool
geometry
,
implementation
1100
x7594
667B
Coat of Anticubism
constructive algorithms
,
geometry
1100
x5453
1846D
Rudolph and Christmas Tree
constructive algorithms
,
geometry
,
math
1200
x18298
1495A
Diamond Miner
geometry
,
greedy
,
math
,
sortings
1200
x16660
1886B
Fear of the Dark
binary search
,
geometry
,
math
1200
x15118
1100C
NN and the Optical Illusion
binary search
,
geometry
,
math
1200
x9721
749B
Parallelogram is Back
brute force
,
constructive algorithms
,
geometry
1200
x8369
794B
Cutting Carrot
geometry
,
math
1200
x6328
9B
Running Student
brute force
,
geometry
,
implementation
1200
x5196
80B
Depression
geometry
,
math
1200
x4221
683A
The Check of the Point
*special problem
,
geometry
1200
x785
1307B
Cow and Friend
geometry
,
greedy
,
math
1300
x12926
1271C
Shawarma Tent
brute force
,
geometry
,
greedy
,
implementation
1300
x10253
750B
New Year and North Pole
geometry
,
implementation
1300
x9422
1942C1
Bessie's Birthday Cake (Easy Version)
geometry
,
greedy
,
math
1300
x9384
820B
Mister B and Angle in Polygon
constructive algorithms
,
geometry
,
math
1300
x5080
227A
Where do I Turn?
geometry
1300
x4037
40A
Find Color
constructive algorithms
,
geometry
,
implementation
,
math
1300
x3841
507B
Amr and Pins
geometry
,
math
1400
x23815
514B
Han Solo and Lazer Gun
brute force
,
data structures
,
geometry
,
implementation
,
math
1400
x20161
1354C1
Simple Polygon Embedding
binary search
,
geometry
,
math
,
ternary search
1400
x15318
650A
Watchmen
data structures
,
geometry
,
math
1400
x15050
1805C
Place for a Selfie
binary search
,
data structures
,
geometry
,
math
1400
x11999
1648A
Weird Sum
combinatorics
,
data structures
,
geometry
,
math
,
matrices
,
sortings
1400
x11721
1156A
Inscribed Figures
geometry
1400
x8097
279A
Point on Spiral
brute force
,
geometry
,
implementation
1400
x5469
851B
Arpa and an exam about geometry
geometry
,
math
1400
x5430
141B
Hopscotch
geometry
,
math
1400
x5133
1486B
Eastern Exhibition
binary search
,
geometry
,
shortest paths
,
sortings
1500
x15211
1616C
Representative Edges
brute force
,
geometry
,
implementation
,
math
1500
x11960
1850G
The Morning Star
combinatorics
,
data structures
,
geometry
,
implementation
,
math
,
sortings
1500
x11180
908C
New Year and Curling
brute force
,
geometry
,
implementation
,
math
1500
x6667
659D
Bicycle Race
geometry
,
implementation
,
math
1500
x6141
18A
Triangle
brute force
,
geometry
1500
x5694
1725G
Garage
binary search
,
geometry
,
math
1500
x5595
100I
Rotation
*special problem
,
geometry
,
math
1500
x340
1730B
Meeting on the Line
binary search
,
geometry
,
greedy
,
implementation
,
math
,
ternary search
1600
x11817
559A
Gerald's Hexagon
brute force
,
geometry
,
math
1600
x10281
1096C
Polygon for the Angle
brute force
,
geometry
1600
x6667
407A
Triangle
brute force
,
geometry
,
implementation
,
math
1600
x4744
935C
Fifa and Fafa
geometry
1600
x4633
1028C
Rectangles
geometry
,
implementation
,
sortings
1600
x4314
618C
Constellation
geometry
,
implementation
1600
x4169
231D
Magic Box
brute force
,
geometry
1600
x4032
593B
Anton and Lines
geometry
,
sortings
1600
x3941
993A
Two Squares
geometry
,
implementation
1600
x3878
849B
Tell Your World
brute force
,
geometry
1600
x3495
135B
Rectangle and Square
brute force
,
geometry
,
math
1600
x2296
958E1
Guard Duty (easy)
brute force
,
geometry
,
greedy
,
math
1600
x1469
1550C
Manhattan Subarrays
brute force
,
geometry
,
greedy
,
implementation
1700
x9930
1451D
Circle Game
games
,
geometry
,
math
1700
x9258
1216C
White Sheet
geometry
,
math
1700
x8765
1598D
Training Session
combinatorics
,
data structures
,
geometry
,
implementation
,
math
1700
x8397
1916D
Mathematical Problem
brute force
,
constructive algorithms
,
geometry
,
math
1700
x7869
498A
Crazy Town
geometry
1700
x6336
1292B
Aroma's Search
brute force
,
constructive algorithms
,
geometry
,
greedy
,
implementation
1700
x6021
1934C
Find a Mine
binary search
,
constructive algorithms
,
geometry
,
greedy
,
interactive
,
math
1700
x6006
1237C1
Balanced Removals (Easier)
constructive algorithms
,
geometry
,
greedy
1700
x5860
1942C2
Bessie's Birthday Cake (Hard Version)
geometry
,
greedy
,
math
1700
x5421
1670D
Very Suspicious
binary search
,
brute force
,
geometry
,
greedy
,
implementation
,
math
1700
x4949
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