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Codeforces Round (Div. 3)
37:21:21
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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
18A
Triangle
brute force
,
geometry
1500
x5690
659D
Bicycle Race
geometry
,
implementation
,
math
1500
x6140
908C
New Year and Curling
brute force
,
geometry
,
implementation
,
math
1500
x6663
1850G
The Morning Star
combinatorics
,
data structures
,
geometry
,
implementation
,
math
,
sortings
1500
x11151
1616C
Representative Edges
brute force
,
geometry
,
implementation
,
math
1500
x11950
1486B
Eastern Exhibition
binary search
,
geometry
,
shortest paths
,
sortings
1500
x15202
141B
Hopscotch
geometry
,
math
1400
x5126
851B
Arpa and an exam about geometry
geometry
,
math
1400
x5428
279A
Point on Spiral
brute force
,
geometry
,
implementation
1400
x5469
1156A
Inscribed Figures
geometry
1400
x8097
1648A
Weird Sum
combinatorics
,
data structures
,
geometry
,
math
,
matrices
,
sortings
1400
x11703
1805C
Place for a Selfie
binary search
,
data structures
,
geometry
,
math
1400
x11983
650A
Watchmen
data structures
,
geometry
,
math
1400
x15037
1354C1
Simple Polygon Embedding
binary search
,
geometry
,
math
,
ternary search
1400
x15314
514B
Han Solo and Lazer Gun
brute force
,
data structures
,
geometry
,
implementation
,
math
1400
x20144
507B
Amr and Pins
geometry
,
math
1400
x23804
40A
Find Color
constructive algorithms
,
geometry
,
implementation
,
math
1300
x3839
227A
Where do I Turn?
geometry
1300
x4035
820B
Mister B and Angle in Polygon
constructive algorithms
,
geometry
,
math
1300
x5079
1942C1
Bessie's Birthday Cake (Easy Version)
geometry
,
greedy
,
math
1300
x9330
750B
New Year and North Pole
geometry
,
implementation
1300
x9421
1271C
Shawarma Tent
brute force
,
geometry
,
greedy
,
implementation
1300
x10251
1307B
Cow and Friend
geometry
,
greedy
,
math
1300
x12925
683A
The Check of the Point
*special problem
,
geometry
1200
x785
80B
Depression
geometry
,
math
1200
x4218
9B
Running Student
brute force
,
geometry
,
implementation
1200
x5188
794B
Cutting Carrot
geometry
,
math
1200
x6324
749B
Parallelogram is Back
brute force
,
constructive algorithms
,
geometry
1200
x8362
1100C
NN and the Optical Illusion
binary search
,
geometry
,
math
1200
x9718
1886B
Fear of the Dark
binary search
,
geometry
,
math
1200
x15095
1495A
Diamond Miner
geometry
,
greedy
,
math
,
sortings
1200
x16655
1846D
Rudolph and Christmas Tree
constructive algorithms
,
geometry
,
math
1200
x18277
667B
Coat of Anticubism
constructive algorithms
,
geometry
1100
x5452
596A
Wilbur and Swimming Pool
geometry
,
implementation
1100
x7594
667A
Pouring Rain
geometry
,
math
1100
x7780
842B
Gleb And Pizza
geometry
1100
x10044
1030B
Vasya and Cornfield
geometry
1100
x11852
1869B
2D Traveling
geometry
,
math
,
shortest paths
,
sortings
1100
x14319
1850E
Cardboard for Pictures
binary search
,
geometry
,
implementation
,
math
1100
x20691
224A
Parallelepiped
brute force
,
geometry
,
math
1100
x25324
270A
Fancy Fence
geometry
,
implementation
,
math
1100
x43379
859B
Lazy Security Guard
brute force
,
geometry
,
math
1000
x6736
157B
Trace
geometry
,
sortings
1000
x12839
1248A
Integer Points
geometry
,
math
1000
x13750
1450B
Balls of Steel
brute force
,
geometry
,
greedy
1000
x14870
1620B
Triangles on a Rectangle
geometry
,
greedy
,
math
1000
x19526
1199B
Water Lily
geometry
,
math
1000
x19575
1539A
Contest Start
combinatorics
,
geometry
,
greedy
,
math
1000
x19581
1515B
Phoenix and Puzzle
brute force
,
geometry
,
math
,
number theory
1000
x24098
766B
Mahmoud and a Triangle
constructive algorithms
,
geometry
,
greedy
,
math
,
number theory
,
sortings
1000
x31037
127A
Wasted Time
geometry
900
x10719
706A
Beru-taxi
brute force
,
geometry
,
implementation
900
x14247
1047B
Cover Points
geometry
,
math
900
x16885
6A
Triangle
brute force
,
geometry
900
x19044
1845B
Come Together
geometry
,
implementation
,
math
900
x20830
1795B
Ideal Point
brute force
,
geometry
,
greedy
900
x21135
181A
Series of Crimes
brute force
,
geometry
,
implementation
800
x6695
900A
Find Extra One
geometry
,
implementation
800
x13349
1740B
Jumbo Extra Cheese 2
geometry
,
greedy
,
sortings
800
x13532
1781A
Parallel Projection
geometry
,
math
800
x14844
1642A
Hard Way
geometry
800
x15976
1816A
Ian Visits Mary
constructive algorithms
,
geometry
,
number theory
800
x16919
1422A
Fence
geometry
,
math
800
x20618
1928A
Rectangle Cutting
geometry
,
math
800
x21042
1713A
Traveling Salesman Problem
geometry
,
greedy
,
implementation
800
x21645
1064A
Make a triangle!
brute force
,
geometry
,
math
800
x21671
1806A
Walking Master
geometry
,
greedy
,
math
800
x22201
1466A
Bovine Dilemma
brute force
,
geometry
,
math
800
x22262
1312A
Two Regular Polygons
geometry
,
greedy
,
math
,
number theory
800
x25310
1398A
Bad Triangle
geometry
,
math
800
x26964
1622A
Construct a Rectangle
geometry
,
math
800
x29442
1926B
Vlad and Shapes
geometry
,
implementation
800
x29462
1369A
FashionabLee
geometry
,
math
800
x35542
1791B
Following Directions
geometry
,
implementation
800
x41666
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