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Before contest
Codeforces Round 941 (Div. 1)
16:58:59
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Before contest
Codeforces Round 941 (Div. 2)
16:58:59
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#
Name
1517H
Fly Around the World
dp
,
geometry
3500
x64
1427H
Prison Break
binary search
,
games
,
geometry
,
ternary search
3500
x69
1326G
Spiderweb Trees
dp
,
geometry
,
trees
3500
x70
1375I
Cubic Lattice
geometry
,
math
,
matrices
,
number theory
3500
x76
1726H
Mainak and the Bleeding Polygon
binary search
,
geometry
,
implementation
,
math
3500
x80
1628F
Spaceship Crisis Management
binary search
,
data structures
,
geometry
,
sortings
3500
x84
1746G
Olympiad Training
binary search
,
data structures
,
dp
,
flows
,
geometry
,
implementation
,
sortings
3500
x88
1071E
Rain Protection
binary search
,
geometry
3500
x90
1641F
Covering Circle
geometry
3500
x94
1740I
Arranging Crystal Balls
data structures
,
divide and conquer
,
divide and conquer
,
dp
,
geometry
,
graphs
,
number theory
3500
x104
799G
Cut the pie
binary search
,
data structures
,
geometry
3500
x107
1503F
Balance the Cards
constructive algorithms
,
data structures
,
divide and conquer
,
geometry
,
graphs
,
implementation
3500
x133
1220G
Geolocation
geometry
3400
x48
853E
Lada Malina
data structures
,
geometry
3400
x64
1045F
Shady Lady
geometry
,
math
3400
x92
1912I
Innovative Washing Machine
geometry
,
math
,
two pointers
3300
x54
949F
Astronomy
geometry
,
probabilities
3300
x57
1578I
Interactive Rays
geometry
,
interactive
3300
x58
1936F
Grand Finale: Circles
binary search
,
geometry
3300
x64
771F
Bear and Isomorphic Points
geometry
,
two pointers
3300
x78
1381E
Origami
geometry
,
math
,
sortings
3300
x100
696F
...Dary!
binary search
,
geometry
,
two pointers
3300
x119
1787H
Codeforces Scoreboard
binary search
,
data structures
,
dp
,
geometry
3300
x197
1548D2
Gregor and the Odd Cows (Hard)
brute force
,
geometry
,
math
,
number theory
3300
x237
607E
Cross Sum
binary search
,
geometry
3300
x245
1696G
Fishingprince Plays With Array Again
brute force
,
data structures
,
geometry
,
math
3300
x265
704E
Iron Man
data structures
,
geometry
,
trees
3300
x272
1534G
A New Beginning
data structures
,
dp
,
geometry
,
sortings
3300
x514
645G
Armistice Area Apportionment
binary search
,
geometry
3200
x111
744D
Hongcow Draws a Circle
geometry
3200
x116
1045E
Ancient civilizations
constructive algorithms
,
geometry
3200
x118
1584G
Eligible Segments
geometry
3200
x201
1446F
Line Distance
binary search
,
data structures
,
geometry
3200
x268
1368G
Shifting Dominoes
data structures
,
geometry
,
graphs
,
trees
3200
x396
269E
String Theory
geometry
,
math
,
strings
3100
x107
780H
Intranet of Buses
binary search
,
geometry
,
implementation
,
two pointers
3100
x116
388E
Fox and Meteor Shower
geometry
3100
x119
1666G
Global Warming
geometry
,
math
3100
x133
1167G
Low Budget Inception
brute force
,
geometry
3100
x146
442E
Gena and Second Distance
geometry
3100
x168
792F
Mages and Monsters
data structures
,
geometry
3100
x199
528E
Triangles 3000
geometry
,
sortings
3100
x214
1070M
Algoland and Berland
constructive algorithms
,
divide and conquer
,
geometry
3000
x64
1218B
Guarding warehouses
data structures
,
geometry
3000
x68
223D
Spider
geometry
,
graphs
3000
x68
142E
Help Greg the Dwarf 2
geometry
3000
x79
154E
Martian Colony
geometry
3000
x88
852H
Bob and stages
dp
,
geometry
3000
x144
372E
Drawing Circles is Fun
combinatorics
,
geometry
3000
x169
223E
Planar Graph
flows
,
geometry
,
graphs
3000
x187
666D
Chain Reaction
brute force
,
geometry
3000
x258
1572E
Polygon
binary search
,
dp
,
geometry
3000
x277
1920F2
Smooth Sailing (Hard Version)
binary search
,
data structures
,
dsu
,
geometry
,
graphs
,
trees
3000
x394
1175G
Yet Another Partiton Problem
data structures
,
divide and conquer
,
dp
,
geometry
,
two pointers
3000
x428
1508D
Swap Pass
constructive algorithms
,
geometry
,
sortings
3000
x525
1571H
Laser Beams
*special problem
,
geometry
,
probabilities
2900
x44
68E
Contact
geometry
2900
x70
73F
Plane of Tanks
brute force
,
geometry
2900
x74
128E
Birthday
geometry
,
math
2900
x96
1402B
Roads
*special problem
,
geometry
,
sortings
2900
x102
1386B
Mixture
*special problem
,
data structures
,
geometry
,
math
,
sortings
2900
x118
1901F
Landscaping
binary search
,
geometry
,
two pointers
2900
x143
1578F
Framing Pictures
geometry
2900
x148
1735F
Pebbles and Beads
data structures
,
geometry
2900
x218
497D
Gears
brute force
,
geometry
,
math
2900
x224
1860F
Evaluate RBS
data structures
,
geometry
,
implementation
,
math
,
sortings
2900
x262
886F
Symmetric Projections
geometry
2900
x262
603D
Ruminations on Ruminants
geometry
,
math
2900
x337
1359F
RC Kaboom Show
binary search
,
brute force
,
data structures
,
geometry
,
math
2900
x349
598F
Cut Length
geometry
2900
x355
611G
New Year and Cake
geometry
,
two pointers
2900
x422
1146H
Satanic Panic
dp
,
geometry
2900
x463
1444D
Rectangular Polyline
constructive algorithms
,
dp
,
geometry
2900
x534
1906D
Spaceship Exploration
binary search
,
geometry
2800
x85
28E
DravDe saves the world
geometry
,
math
2800
x85
962G
Visible Black Areas
data structures
,
dsu
,
geometry
,
trees
2800
x125
887E
Little Brother
binary search
,
geometry
,
sortings
2800
x162
717I
Cowboy Beblop at his computer
geometry
2800
x202
575E
Spectator Riots
geometry
2800
x236
568D
Sign Posts
brute force
,
geometry
,
math
2800
x298
1826F
Fading into Fog
geometry
,
interactive
,
math
,
probabilities
2800
x336
77E
Martian Food
geometry
2800
x363
776F
Sherlock's bet to Moriarty
constructive algorithms
,
data structures
,
divide and conquer
,
geometry
,
graphs
,
implementation
,
trees
2800
x412
559D
Randomizer
combinatorics
,
geometry
,
probabilities
2800
x423
377E
Cookie Clicker
dp
,
geometry
2800
x443
815D
Karen and Cards
binary search
,
combinatorics
,
data structures
,
geometry
2800
x594
44F
BerPaint
geometry
,
graphs
2700
x64
1423E
5G Antenna Towers
geometry
2700
x74
107E
Darts
geometry
,
probabilities
2700
x127
549E
Sasha Circle
geometry
,
math
2700
x145
309D
Tennis Rackets
brute force
,
geometry
2700
x171
958E3
Guard Duty (hard)
geometry
2700
x177
54E
Vacuum Сleaner
geometry
2700
x187
592E
BCPC
binary search
,
geometry
,
two pointers
2700
x208
243D
Cubes
data structures
,
dp
,
geometry
,
two pointers
2700
x208
989E
A Trance of Nightfall
dp
,
geometry
,
matrices
,
probabilities
2700
x228
293D
Ksusha and Square
geometry
,
math
,
probabilities
,
two pointers
2700
x233
460E
Roland and Rose
brute force
,
geometry
,
math
,
sortings
2700
x334
1599G
Shortest path
brute force
,
geometry
,
math
,
shortest paths
2700
x357
249D
Donkey and Stars
data structures
,
dp
,
geometry
,
math
,
sortings
2700
x374
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