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Codeforces Round (Div. 2)
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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
48C
The Race
math
1800
x765
48B
Land Lot
brute force
,
implementation
1200
x2631
48A
Rock-paper-scissors
implementation
,
schedules
900
x5811
47E
Cannon
data structures
,
geometry
,
sortings
2200
x358
47D
Safe
brute force
2200
x759
47C
Crossword
implementation
2000
x762
47B
Coins
implementation
1200
x13414
47A
Triangular numbers
brute force
,
math
800
x14666
46G
Emperor's Problem
geometry
2500
x110
46F
Hercule Poirot Problem
dsu
,
graphs
2300
x313
46E
Comb
data structures
,
dp
1900
x932
46D
Parking Lot
data structures
,
implementation
1800
x966
46C
Hamsters and Tigers
two pointers
1600
x2316
46B
T-shirts from Sponsor
implementation
1100
x3600
46A
Ball Game
brute force
,
implementation
800
x8557
45J
Planting Trees
constructive algorithms
1800
x923
45I
TCMCF+++
greedy
1400
x2335
45H
Road Problem
graphs
2100
x178
45G
Prime Problem
number theory
2200
x1004
45F
Goats and Wolves
greedy
2500
x127
45E
Director
constructive algorithms
,
greedy
2000
x533
45D
Event Dates
greedy
,
meet-in-the-middle
,
sortings
1900
x1638
45C
Dancing Lessons
data structures
1900
x865
45B
School
dp
,
dsu
2200
x270
45A
Codecraft III
implementation
900
x6540
44J
Triminoes
constructive algorithms
,
greedy
2000
x559
44I
Toys
brute force
,
combinatorics
2300
x185
44H
Phone Number
dp
1700
x1704
44G
Shooting Gallery
data structures
,
implementation
2500
x392
44F
BerPaint
geometry
,
graphs
2700
x66
44E
Anfisa the Monkey
dp
1400
x4933
44D
Hyperdrive
math
1800
x700
44C
Holidays
implementation
1300
x3261
44B
Cola
implementation
1500
x1930
44A
Indian Summer
implementation
900
x10031
43E
Race
brute force
,
implementation
,
two pointers
2300
x388
43D
Journey
brute force
,
constructive algorithms
,
implementation
2000
x1069
43C
Lucky Tickets
greedy
1300
x4199
43B
Letter
implementation
,
strings
1100
x16148
43A
Football
strings
1000
x53927
42E
Baldman and the military
dfs and similar
,
graphs
,
trees
2700
x197
42D
Strange town
constructive algorithms
,
math
2300
x391
42C
Safe cracking
brute force
,
constructive algorithms
2200
x458
42B
Game of chess unfinished
implementation
1700
x929
42A
Guilty --- to the kitchen!
greedy
,
implementation
1400
x2783
41E
3-cycles
constructive algorithms
,
graphs
,
greedy
1900
x1916
41D
Pawn
dp
1900
x2239
41C
Email address
expression parsing
,
implementation
1300
x3686
41B
Martian Dollar
brute force
1400
x3924
41A
Translation
implementation
,
strings
800
x138976
40E
Number Table
combinatorics
2500
x660
40D
Interesting Sequence
math
2600
x129
40C
Berland Square
implementation
,
math
2300
x243
40B
Repaintings
math
1600
x1133
40A
Find Color
constructive algorithms
,
geometry
,
implementation
,
math
1300
x3939
39K
Testing
2600
x84
39J
Spelling Check
hashing
,
implementation
,
strings
1500
x2875
39I
Tram
2500
x127
39H
Multiplication Table
implementation
1300
x2638
39G
Inverse Function
implementation
2400
x125
39F
Pacifist frogs
implementation
1300
x1516
39E
What Has Dirichlet Got to Do with That?
dp
,
games
2000
x861
39D
Cubical Planet
math
1100
x3833
39C
Moon Craters
dp
,
sortings
2100
x573
39B
Company Income Growth
greedy
1300
x2598
39A
C*++ Calculations
expression parsing
,
greedy
2000
x659
38H
The Great Marathon
dp
2400
x268
38G
Queue
data structures
2300
x687
38F
Smart Boy
dp
,
games
,
strings
2100
x380
38E
Let's Go Rolling!
dp
,
sortings
1800
x2521
38D
Vasya the Architect
implementation
1900
x483
38C
Blinds
brute force
1400
x2107
38B
Chess
brute force
,
implementation
,
math
1200
x3452
38A
Army
implementation
800
x20773
37E
Trial for Chief
graphs
,
greedy
,
shortest paths
2600
x600
37D
Lesson Timetable
combinatorics
,
dp
,
math
2300
x391
37C
Old Berland Language
data structures
,
greedy
,
trees
1900
x1607
37B
Computer Game
greedy
,
implementation
1800
x872
37A
Towers
sortings
1000
x23924
36E
Two Paths
constructive algorithms
,
dsu
,
graphs
,
implementation
2600
x501
36D
New Game with a Chess Piece
games
2300
x686
36C
Bowls
geometry
,
implementation
2200
x331
36B
Fractal
implementation
1600
x1447
36A
Extra-terrestrial Intelligence
implementation
1300
x2935
35E
Parade
data structures
,
sortings
2100
x720
35D
Animals
dp
,
greedy
1700
x3220
35C
Fire Again
brute force
,
dfs and similar
,
shortest paths
1500
x6589
35B
Warehouse
implementation
1700
x996
35A
Shell Game
implementation
1000
x6700
34E
Collisions
brute force
,
implementation
,
math
2000
x574
34D
Road Map
dfs and similar
,
graphs
1600
x4951
34C
Page Numbers
expression parsing
,
implementation
,
sortings
,
strings
1300
x4128
34B
Sale
greedy
,
sortings
900
x50159
34A
Reconnaissance 2
implementation
800
x29046
33E
Helper
2600
x126
33D
Knights
geometry
,
graphs
,
shortest paths
,
sortings
2000
x1148
33C
Wonderful Randomized Sum
greedy
1800
x2925
33B
String Problem
shortest paths
1800
x4306
33A
What is for dinner?
greedy
,
implementation
1200
x3931
32E
Hide-and-Seek
geometry
,
implementation
2400
x324
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