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Codeforces Round (Div. 2)
24:53:56
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Difficulty:
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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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Problems
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Status
Standings
Custom test
Problems
#
Name
51F
Caterpillar
dfs and similar
,
dp
,
graphs
,
trees
2800
x552
51E
Pentagon
combinatorics
,
graphs
,
matrices
2400
x373
51D
Geometrical problem
implementation
2200
x458
51C
Three Base Stations
binary search
,
greedy
1800
x1870
51B
bHTML Tables Analisys
expression parsing
1700
x854
51A
Cheaterius's Problem
implementation
1300
x1797
50E
Square Equation Roots
math
2300
x348
50D
Bombing
binary search
,
dp
,
probabilities
2100
x609
50C
Happy Farm 5
geometry
2000
x741
50B
Choosing Symbol Pairs
strings
1500
x5601
50A
Domino piling
greedy
,
math
800
x235961
49E
Common ancestor
dp
2300
x652
49D
Game
brute force
,
dp
,
implementation
1800
x1867
49C
Disposition
constructive algorithms
,
math
1700
x1664
49B
Sum
math
1500
x2425
49A
Sleuth
implementation
800
x13109
48H
Black and White
constructive algorithms
2800
x137
48G
Galaxy Union
dp
,
trees
,
two pointers
2700
x256
48F
Snow sellers
greedy
,
sortings
2800
x144
48E
Ivan the Fool VS Gorynych the Dragon
dp
,
games
,
graphs
2100
x569
48D
Permutations
greedy
1500
x2444
48C
The Race
math
1800
x765
48B
Land Lot
brute force
,
implementation
1200
x2636
48A
Rock-paper-scissors
implementation
,
schedules
900
x5823
47E
Cannon
data structures
,
geometry
,
sortings
2200
x358
47D
Safe
brute force
2200
x759
47C
Crossword
implementation
2000
x767
47B
Coins
implementation
1200
x13479
47A
Triangular numbers
brute force
,
math
800
x14703
46G
Emperor's Problem
geometry
2500
x110
46F
Hercule Poirot Problem
dsu
,
graphs
2300
x318
46E
Comb
data structures
,
dp
1900
x934
46D
Parking Lot
data structures
,
implementation
1800
x966
46C
Hamsters and Tigers
two pointers
1600
x2341
46B
T-shirts from Sponsor
implementation
1100
x3606
46A
Ball Game
brute force
,
implementation
800
x8567
45J
Planting Trees
constructive algorithms
1800
x924
45I
TCMCF+++
greedy
1400
x2340
45H
Road Problem
graphs
2100
x178
45G
Prime Problem
number theory
2200
x1006
45F
Goats and Wolves
greedy
2500
x127
45E
Director
constructive algorithms
,
greedy
2000
x533
45D
Event Dates
greedy
,
meet-in-the-middle
,
sortings
1900
x1644
45C
Dancing Lessons
data structures
1900
x866
45B
School
dp
,
dsu
2200
x271
45A
Codecraft III
implementation
900
x6549
44J
Triminoes
constructive algorithms
,
greedy
2000
x559
44I
Toys
brute force
,
combinatorics
2300
x185
44H
Phone Number
dp
1700
x1706
44G
Shooting Gallery
data structures
,
implementation
2500
x394
44F
BerPaint
geometry
,
graphs
2700
x66
44E
Anfisa the Monkey
dp
1400
x4965
44D
Hyperdrive
math
1800
x702
44C
Holidays
implementation
1300
x3274
44B
Cola
implementation
1500
x1935
44A
Indian Summer
implementation
900
x10088
43E
Race
brute force
,
implementation
,
two pointers
2300
x388
43D
Journey
brute force
,
constructive algorithms
,
implementation
2000
x1069
43C
Lucky Tickets
greedy
1300
x4208
43B
Letter
implementation
,
strings
1100
x16197
43A
Football
strings
1000
x54115
42E
Baldman and the military
dfs and similar
,
graphs
,
trees
2700
x197
42D
Strange town
constructive algorithms
,
math
2300
x392
42C
Safe cracking
brute force
,
constructive algorithms
2200
x460
42B
Game of chess unfinished
implementation
1700
x930
42A
Guilty --- to the kitchen!
greedy
,
implementation
1400
x2796
41E
3-cycles
constructive algorithms
,
graphs
,
greedy
1900
x1922
41D
Pawn
dp
1900
x2247
41C
Email address
expression parsing
,
implementation
1300
x3691
41B
Martian Dollar
brute force
1400
x3932
41A
Translation
implementation
,
strings
800
x139496
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
x3945
39K
Testing
2600
x84
39J
Spelling Check
hashing
,
implementation
,
strings
1500
x2896
39I
Tram
2500
x134
39H
Multiplication Table
implementation
1300
x2655
39G
Inverse Function
implementation
2400
x126
39F
Pacifist frogs
implementation
1300
x1523
39E
What Has Dirichlet Got to Do with That?
dp
,
games
2000
x862
39D
Cubical Planet
math
1100
x3843
39C
Moon Craters
dp
,
sortings
2100
x573
39B
Company Income Growth
greedy
1300
x2601
39A
C*++ Calculations
expression parsing
,
greedy
2000
x668
38H
The Great Marathon
dp
2400
x270
38G
Queue
data structures
2300
x694
38F
Smart Boy
dp
,
games
,
strings
2100
x380
38E
Let's Go Rolling!
dp
,
sortings
1800
x2531
38D
Vasya the Architect
implementation
1900
x483
38C
Blinds
brute force
1400
x2114
38B
Chess
brute force
,
implementation
,
math
1200
x3462
38A
Army
implementation
800
x20804
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
x1613
37B
Computer Game
greedy
,
implementation
1800
x873
37A
Towers
sortings
1000
x23961
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