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Before contest
Codeforces Round 941 (Div. 1)
35:15:57
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*has extra registration
Before contest
Codeforces Round 941 (Div. 2)
35:15:57
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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
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implementation
interactive
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Custom test
Problems
#
Name
1791B
Following Directions
geometry
,
implementation
800
x41606
1369A
FashionabLee
geometry
,
math
800
x35516
1622A
Construct a Rectangle
geometry
,
math
800
x29416
1926B
Vlad and Shapes
geometry
,
implementation
800
x29320
1398A
Bad Triangle
geometry
,
math
800
x26957
1312A
Two Regular Polygons
geometry
,
greedy
,
math
,
number theory
800
x25267
1466A
Bovine Dilemma
brute force
,
geometry
,
math
800
x22257
1806A
Walking Master
geometry
,
greedy
,
math
800
x22145
1713A
Traveling Salesman Problem
geometry
,
greedy
,
implementation
800
x21639
1064A
Make a triangle!
brute force
,
geometry
,
math
800
x21619
1928A
Rectangle Cutting
geometry
,
math
800
x20976
1422A
Fence
geometry
,
math
800
x20613
1816A
Ian Visits Mary
constructive algorithms
,
geometry
,
number theory
800
x16909
1642A
Hard Way
geometry
800
x15927
1781A
Parallel Projection
geometry
,
math
800
x14833
1740B
Jumbo Extra Cheese 2
geometry
,
greedy
,
sortings
800
x13524
900A
Find Extra One
geometry
,
implementation
800
x13347
181A
Series of Crimes
brute force
,
geometry
,
implementation
800
x6691
1795B
Ideal Point
brute force
,
geometry
,
greedy
900
x21118
1845B
Come Together
geometry
,
implementation
,
math
900
x20817
6A
Triangle
brute force
,
geometry
900
x19018
1047B
Cover Points
geometry
,
math
900
x16877
706A
Beru-taxi
brute force
,
geometry
,
implementation
900
x14239
127A
Wasted Time
geometry
900
x10710
766B
Mahmoud and a Triangle
constructive algorithms
,
geometry
,
greedy
,
math
,
number theory
,
sortings
1000
x30987
1515B
Phoenix and Puzzle
brute force
,
geometry
,
math
,
number theory
1000
x24080
1539A
Contest Start
combinatorics
,
geometry
,
greedy
,
math
1000
x19572
1199B
Water Lily
geometry
,
math
1000
x19561
1620B
Triangles on a Rectangle
geometry
,
greedy
,
math
1000
x19502
1450B
Balls of Steel
brute force
,
geometry
,
greedy
1000
x14860
1248A
Integer Points
geometry
,
math
1000
x13749
157B
Trace
geometry
,
sortings
1000
x12826
859B
Lazy Security Guard
brute force
,
geometry
,
math
1000
x6734
270A
Fancy Fence
geometry
,
implementation
,
math
1100
x43321
224A
Parallelepiped
brute force
,
geometry
,
math
1100
x25268
1850E
Cardboard for Pictures
binary search
,
geometry
,
implementation
,
math
1100
x20644
1869B
2D Traveling
geometry
,
math
,
shortest paths
,
sortings
1100
x14274
1030B
Vasya and Cornfield
geometry
1100
x11814
842B
Gleb And Pizza
geometry
1100
x9997
667A
Pouring Rain
geometry
,
math
1100
x7775
596A
Wilbur and Swimming Pool
geometry
,
implementation
1100
x7594
667B
Coat of Anticubism
constructive algorithms
,
geometry
1100
x5450
1846D
Rudolph and Christmas Tree
constructive algorithms
,
geometry
,
math
1200
x18248
1495A
Diamond Miner
geometry
,
greedy
,
math
,
sortings
1200
x16640
1886B
Fear of the Dark
binary search
,
geometry
,
math
1200
x15069
1100C
NN and the Optical Illusion
binary search
,
geometry
,
math
1200
x9716
749B
Parallelogram is Back
brute force
,
constructive algorithms
,
geometry
1200
x8359
794B
Cutting Carrot
geometry
,
math
1200
x6317
9B
Running Student
brute force
,
geometry
,
implementation
1200
x5184
80B
Depression
geometry
,
math
1200
x4216
683A
The Check of the Point
*special problem
,
geometry
1200
x785
1307B
Cow and Friend
geometry
,
greedy
,
math
1300
x12920
1271C
Shawarma Tent
brute force
,
geometry
,
greedy
,
implementation
1300
x10246
750B
New Year and North Pole
geometry
,
implementation
1300
x9420
1942C1
Bessie's Birthday Cake (Easy Version)
geometry
,
greedy
,
math
1300
x9237
820B
Mister B and Angle in Polygon
constructive algorithms
,
geometry
,
math
1300
x5079
227A
Where do I Turn?
geometry
1300
x4035
40A
Find Color
constructive algorithms
,
geometry
,
implementation
,
math
1300
x3838
507B
Amr and Pins
geometry
,
math
1400
x23791
514B
Han Solo and Lazer Gun
brute force
,
data structures
,
geometry
,
implementation
,
math
1400
x20127
1354C1
Simple Polygon Embedding
binary search
,
geometry
,
math
,
ternary search
1400
x15306
650A
Watchmen
data structures
,
geometry
,
math
1400
x15025
1805C
Place for a Selfie
binary search
,
data structures
,
geometry
,
math
1400
x11971
1648A
Weird Sum
combinatorics
,
data structures
,
geometry
,
math
,
matrices
,
sortings
1400
x11687
1156A
Inscribed Figures
geometry
1400
x8097
279A
Point on Spiral
brute force
,
geometry
,
implementation
1400
x5464
851B
Arpa and an exam about geometry
geometry
,
math
1400
x5418
141B
Hopscotch
geometry
,
math
1400
x5116
1486B
Eastern Exhibition
binary search
,
geometry
,
shortest paths
,
sortings
1500
x15185
1616C
Representative Edges
brute force
,
geometry
,
implementation
,
math
1500
x11942
1850G
The Morning Star
combinatorics
,
data structures
,
geometry
,
implementation
,
math
,
sortings
1500
x11129
908C
New Year and Curling
brute force
,
geometry
,
implementation
,
math
1500
x6659
659D
Bicycle Race
geometry
,
implementation
,
math
1500
x6137
18A
Triangle
brute force
,
geometry
1500
x5688
1725G
Garage
binary search
,
geometry
,
math
1500
x5580
100I
Rotation
*special problem
,
geometry
,
math
1500
x338
1730B
Meeting on the Line
binary search
,
geometry
,
greedy
,
implementation
,
math
,
ternary search
1600
x11777
559A
Gerald's Hexagon
brute force
,
geometry
,
math
1600
x10276
1096C
Polygon for the Angle
brute force
,
geometry
1600
x6664
407A
Triangle
brute force
,
geometry
,
implementation
,
math
1600
x4740
935C
Fifa and Fafa
geometry
1600
x4627
1028C
Rectangles
geometry
,
implementation
,
sortings
1600
x4311
618C
Constellation
geometry
,
implementation
1600
x4161
231D
Magic Box
brute force
,
geometry
1600
x4027
593B
Anton and Lines
geometry
,
sortings
1600
x3940
993A
Two Squares
geometry
,
implementation
1600
x3875
849B
Tell Your World
brute force
,
geometry
1600
x3476
135B
Rectangle and Square
brute force
,
geometry
,
math
1600
x2294
958E1
Guard Duty (easy)
brute force
,
geometry
,
greedy
,
math
1600
x1467
1550C
Manhattan Subarrays
brute force
,
geometry
,
greedy
,
implementation
1700
x9924
1451D
Circle Game
games
,
geometry
,
math
1700
x9238
1216C
White Sheet
geometry
,
math
1700
x8755
1598D
Training Session
combinatorics
,
data structures
,
geometry
,
implementation
,
math
1700
x8385
1916D
Mathematical Problem
brute force
,
constructive algorithms
,
geometry
,
math
1700
x7833
498A
Crazy Town
geometry
1700
x6329
1292B
Aroma's Search
brute force
,
constructive algorithms
,
geometry
,
greedy
,
implementation
1700
x6017
1934C
Find a Mine
binary search
,
constructive algorithms
,
geometry
,
greedy
,
interactive
,
math
1700
x5947
1237C1
Balanced Removals (Easier)
constructive algorithms
,
geometry
,
greedy
1700
x5857
1942C2
Bessie's Birthday Cake (Hard Version)
geometry
,
greedy
,
math
1700
x5351
1670D
Very Suspicious
binary search
,
brute force
,
geometry
,
greedy
,
implementation
,
math
1700
x4942
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