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Codeforces Round 940 (Div. 2) and CodeCraft-23
43:18:18
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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
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
x41491
1369A
FashionabLee
geometry
,
math
800
x35472
1622A
Construct a Rectangle
geometry
,
math
800
x29400
1926B
Vlad and Shapes
geometry
,
implementation
800
x29151
1398A
Bad Triangle
geometry
,
math
800
x26941
1312A
Two Regular Polygons
geometry
,
greedy
,
math
,
number theory
800
x25239
1466A
Bovine Dilemma
brute force
,
geometry
,
math
800
x22250
1806A
Walking Master
geometry
,
greedy
,
math
800
x22057
1713A
Traveling Salesman Problem
geometry
,
greedy
,
implementation
800
x21621
1064A
Make a triangle!
brute force
,
geometry
,
math
800
x21604
1928A
Rectangle Cutting
geometry
,
math
800
x20881
1422A
Fence
geometry
,
math
800
x20601
1816A
Ian Visits Mary
constructive algorithms
,
geometry
,
number theory
800
x16889
1642A
Hard Way
geometry
800
x15890
1781A
Parallel Projection
geometry
,
math
800
x14828
1740B
Jumbo Extra Cheese 2
geometry
,
greedy
,
sortings
800
x13509
900A
Find Extra One
geometry
,
implementation
800
x13337
181A
Series of Crimes
brute force
,
geometry
,
implementation
800
x6677
1795B
Ideal Point
brute force
,
geometry
,
greedy
900
x21095
1845B
Come Together
geometry
,
implementation
,
math
900
x20774
6A
Triangle
brute force
,
geometry
900
x18989
1047B
Cover Points
geometry
,
math
900
x16864
706A
Beru-taxi
brute force
,
geometry
,
implementation
900
x14233
127A
Wasted Time
geometry
900
x10701
766B
Mahmoud and a Triangle
constructive algorithms
,
geometry
,
greedy
,
math
,
number theory
,
sortings
1000
x30862
1515B
Phoenix and Puzzle
brute force
,
geometry
,
math
,
number theory
1000
x24060
1539A
Contest Start
combinatorics
,
geometry
,
greedy
,
math
1000
x19553
1199B
Water Lily
geometry
,
math
1000
x19550
1620B
Triangles on a Rectangle
geometry
,
greedy
,
math
1000
x19464
1450B
Balls of Steel
brute force
,
geometry
,
greedy
1000
x14854
1248A
Integer Points
geometry
,
math
1000
x13744
157B
Trace
geometry
,
sortings
1000
x12816
859B
Lazy Security Guard
brute force
,
geometry
,
math
1000
x6729
270A
Fancy Fence
geometry
,
implementation
,
math
1100
x43252
224A
Parallelepiped
brute force
,
geometry
,
math
1100
x25220
1850E
Cardboard for Pictures
binary search
,
geometry
,
implementation
,
math
1100
x20552
1869B
2D Traveling
geometry
,
math
,
shortest paths
,
sortings
1100
x14214
1030B
Vasya and Cornfield
geometry
1100
x11783
842B
Gleb And Pizza
geometry
1100
x9964
667A
Pouring Rain
geometry
,
math
1100
x7774
596A
Wilbur and Swimming Pool
geometry
,
implementation
1100
x7592
667B
Coat of Anticubism
constructive algorithms
,
geometry
1100
x5448
1846D
Rudolph and Christmas Tree
constructive algorithms
,
geometry
,
math
1200
x18214
1495A
Diamond Miner
geometry
,
greedy
,
math
,
sortings
1200
x16633
1886B
Fear of the Dark
binary search
,
geometry
,
math
1200
x15028
1100C
NN and the Optical Illusion
binary search
,
geometry
,
math
1200
x9715
749B
Parallelogram is Back
brute force
,
constructive algorithms
,
geometry
1200
x8353
794B
Cutting Carrot
geometry
,
math
1200
x6304
9B
Running Student
brute force
,
geometry
,
implementation
1200
x5171
80B
Depression
geometry
,
math
1200
x4213
683A
The Check of the Point
*special problem
,
geometry
1200
x783
1307B
Cow and Friend
geometry
,
greedy
,
math
1300
x12881
1271C
Shawarma Tent
brute force
,
geometry
,
greedy
,
implementation
1300
x10239
750B
New Year and North Pole
geometry
,
implementation
1300
x9418
1942C1
Bessie's Birthday Cake (Easy Version)
geometry
,
greedy
,
math
1300
x9033
820B
Mister B and Angle in Polygon
constructive algorithms
,
geometry
,
math
1300
x5078
227A
Where do I Turn?
geometry
1300
x4033
40A
Find Color
constructive algorithms
,
geometry
,
implementation
,
math
1300
x3834
507B
Amr and Pins
geometry
,
math
1400
x23764
514B
Han Solo and Lazer Gun
brute force
,
data structures
,
geometry
,
implementation
,
math
1400
x20089
1354C1
Simple Polygon Embedding
binary search
,
geometry
,
math
,
ternary search
1400
x15297
650A
Watchmen
data structures
,
geometry
,
math
1400
x15012
1805C
Place for a Selfie
binary search
,
data structures
,
geometry
,
math
1400
x11953
1648A
Weird Sum
combinatorics
,
data structures
,
geometry
,
math
,
matrices
,
sortings
1400
x11659
1156A
Inscribed Figures
geometry
1400
x8031
279A
Point on Spiral
brute force
,
geometry
,
implementation
1400
x5463
851B
Arpa and an exam about geometry
geometry
,
math
1400
x5416
141B
Hopscotch
geometry
,
math
1400
x5109
1486B
Eastern Exhibition
binary search
,
geometry
,
shortest paths
,
sortings
1500
x15162
1616C
Representative Edges
brute force
,
geometry
,
implementation
,
math
1500
x11922
1850G
The Morning Star
combinatorics
,
data structures
,
geometry
,
implementation
,
math
,
sortings
1500
x11095
908C
New Year and Curling
brute force
,
geometry
,
implementation
,
math
1500
x6656
659D
Bicycle Race
geometry
,
implementation
,
math
1500
x6133
18A
Triangle
brute force
,
geometry
1500
x5673
1725G
Garage
binary search
,
geometry
,
math
1500
x5569
100I
Rotation
*special problem
,
geometry
,
math
1500
x337
1730B
Meeting on the Line
binary search
,
geometry
,
greedy
,
implementation
,
math
,
ternary search
1600
x11749
559A
Gerald's Hexagon
brute force
,
geometry
,
math
1600
x10272
1096C
Polygon for the Angle
brute force
,
geometry
1600
x6658
407A
Triangle
brute force
,
geometry
,
implementation
,
math
1600
x4737
935C
Fifa and Fafa
geometry
1600
x4626
1028C
Rectangles
geometry
,
implementation
,
sortings
1600
x4311
618C
Constellation
geometry
,
implementation
1600
x4160
231D
Magic Box
brute force
,
geometry
1600
x4024
593B
Anton and Lines
geometry
,
sortings
1600
x3938
993A
Two Squares
geometry
,
implementation
1600
x3872
849B
Tell Your World
brute force
,
geometry
1600
x3469
135B
Rectangle and Square
brute force
,
geometry
,
math
1600
x2289
958E1
Guard Duty (easy)
brute force
,
geometry
,
greedy
,
math
1600
x1466
1550C
Manhattan Subarrays
brute force
,
geometry
,
greedy
,
implementation
1700
x9913
1451D
Circle Game
games
,
geometry
,
math
1700
x9229
1216C
White Sheet
geometry
,
math
1700
x8748
1598D
Training Session
combinatorics
,
data structures
,
geometry
,
implementation
,
math
1700
x8370
1916D
Mathematical Problem
brute force
,
constructive algorithms
,
geometry
,
math
1700
x7802
498A
Crazy Town
geometry
1700
x6328
1292B
Aroma's Search
brute force
,
constructive algorithms
,
geometry
,
greedy
,
implementation
1700
x6006
1934C
Find a Mine
binary search
,
constructive algorithms
,
geometry
,
greedy
,
interactive
,
math
1700
x5898
1237C1
Balanced Removals (Easier)
constructive algorithms
,
geometry
,
greedy
1700
x5853
1942C2
Bessie's Birthday Cake (Hard Version)
geometry
,
greedy
,
math
1700
x5228
1670D
Very Suspicious
binary search
,
brute force
,
geometry
,
greedy
,
implementation
,
math
1700
x4935
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