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Problems
#
Name
44C
Holidays
implementation
1300
x3211
44B
Cola
implementation
1500
x1902
44A
Indian Summer
implementation
900
x9479
43E
Race
brute force
,
implementation
,
two pointers
2300
x375
43D
Journey
brute force
,
constructive algorithms
,
implementation
2000
x1048
43C
Lucky Tickets
greedy
1300
x4148
43B
Letter
implementation
,
strings
1100
x15725
43A
Football
strings
1000
x52203
42E
Baldman and the military
dfs and similar
,
graphs
,
trees
2700
x189
42D
Strange town
constructive algorithms
,
math
2300
x388
42C
Safe cracking
brute force
,
constructive algorithms
2200
x446
42B
Game of chess unfinished
implementation
1700
x922
42A
Guilty --- to the kitchen!
greedy
,
implementation
1400
x2753
41E
3-cycles
constructive algorithms
,
graphs
,
greedy
1900
x1903
41D
Pawn
dp
1900
x2182
41C
Email address
expression parsing
,
implementation
1300
x3640
41B
Martian Dollar
brute force
1400
x3872
41A
Translation
implementation
,
strings
800
x135227
40E
Number Table
combinatorics
2500
x655
40D
Interesting Sequence
math
2600
x124
40C
Berland Square
implementation
,
math
2300
x239
40B
Repaintings
math
1600
x1113
40A
Find Color
constructive algorithms
,
geometry
,
implementation
,
math
1300
x3854
39K
Testing
2600
x82
39J
Spelling Check
hashing
,
implementation
,
strings
1500
x2793
39I
Tram
2500
x122
39H
Multiplication Table
implementation
1300
x2611
39G
Inverse Function
implementation
2400
x123
39F
Pacifist frogs
implementation
1300
x1496
39E
What Has Dirichlet Got to Do with That?
dp
,
games
2000
x853
39D
Cubical Planet
math
1100
x3748
39C
Moon Craters
dp
,
sortings
2100
x569
39B
Company Income Growth
greedy
1300
x2563
39A
C*++ Calculations
expression parsing
,
greedy
2000
x656
38H
The Great Marathon
dp
2400
x263
38G
Queue
data structures
2300
x674
38F
Smart Boy
dp
,
games
,
strings
2100
x375
38E
Let's Go Rolling!
dp
,
sortings
1800
x2484
38D
Vasya the Architect
implementation
1900
x478
38C
Blinds
brute force
1400
x2087
38B
Chess
brute force
,
implementation
,
math
1200
x3393
38A
Army
implementation
800
x20535
37E
Trial for Chief
graphs
,
greedy
,
shortest paths
2600
x586
37D
Lesson Timetable
combinatorics
,
dp
,
math
2300
x388
37C
Old Berland Language
data structures
,
greedy
,
trees
1900
x1503
37B
Computer Game
greedy
,
implementation
1800
x862
37A
Towers
sortings
1000
x23622
36E
Two Paths
constructive algorithms
,
dsu
,
graphs
,
implementation
2600
x496
36D
New Game with a Chess Piece
games
2300
x676
36C
Bowls
geometry
,
implementation
2200
x323
36B
Fractal
implementation
1600
x1420
36A
Extra-terrestrial Intelligence
implementation
1300
x2898
35E
Parade
data structures
,
sortings
2100
x701
35D
Animals
dp
,
greedy
1700
x3151
35C
Fire Again
brute force
,
dfs and similar
,
shortest paths
1500
x6272
35B
Warehouse
implementation
1700
x989
35A
Shell Game
implementation
1000
x6618
34E
Collisions
brute force
,
implementation
,
math
2000
x563
34D
Road Map
dfs and similar
,
graphs
1600
x4858
34C
Page Numbers
expression parsing
,
implementation
,
sortings
,
strings
1300
x4073
34B
Sale
greedy
,
sortings
900
x48747
34A
Reconnaissance 2
implementation
800
x28490
33E
Helper
2600
x121
33D
Knights
geometry
,
graphs
,
shortest paths
,
sortings
2000
x1133
33C
Wonderful Randomized Sum
greedy
1800
x2856
33B
String Problem
shortest paths
1800
x4084
33A
What is for dinner?
greedy
,
implementation
1200
x3850
32E
Hide-and-Seek
geometry
,
implementation
2400
x321
32D
Constellation
implementation
1600
x1237
32C
Flea
math
1700
x2053
32B
Borze
expression parsing
,
implementation
800
x58864
32A
Reconnaissance
brute force
800
x12009
31E
TV Game
dp
2400
x1024
31D
Chocolate
dfs and similar
,
implementation
2000
x989
31C
Schedule
implementation
1700
x1724
31B
Sysadmin Bob
greedy
,
implementation
,
strings
1500
x4106
31A
Worms Evolution
implementation
1200
x9934
30E
Tricky and Clever Password
binary search
,
constructive algorithms
,
data structures
,
greedy
,
hashing
,
strings
2800
x673
30D
King's Problem?
geometry
,
greedy
2600
x410
30C
Shooting Gallery
dp
,
probabilities
1800
x1852
30B
Codeforces World Finals
implementation
1700
x1149
30A
Accounting
brute force
,
math
1400
x3319
29E
Quarrel
graphs
,
shortest paths
2400
x860
29D
Ant on the Tree
constructive algorithms
,
dfs and similar
,
trees
2000
x2309
29C
Mail Stamps
data structures
,
dfs and similar
,
graphs
,
implementation
1700
x4560
29B
Traffic Lights
implementation
1500
x2832
29A
Spit Problem
brute force
1000
x6832
28E
DravDe saves the world
geometry
,
math
2800
x85
28D
Don't fear, DravDe is kind
binary search
,
data structures
,
dp
,
hashing
2400
x582
28C
Bath Queue
combinatorics
,
dp
,
probabilities
2200
x984
28B
pSort
dfs and similar
,
dsu
,
graphs
1600
x4413
28A
Bender Problem
implementation
1600
x769
27E
Number With The Given Amount Of Divisors
brute force
,
dp
,
number theory
2000
x3996
27D
Ring Road 2
2-sat
,
dfs and similar
,
dsu
,
graphs
2200
x2365
27C
Unordered Subsequence
constructive algorithms
,
greedy
1900
x2695
27B
Tournament
bitmasks
,
brute force
,
dfs and similar
,
greedy
1300
x5147
27A
Next Test
implementation
,
sortings
1200
x19340
26E
Multithreading
constructive algorithms
2400
x362
26D
Tickets
combinatorics
,
math
,
probabilities
2400
x747
26C
Parquet
combinatorics
,
constructive algorithms
,
greedy
,
implementation
2000
x823
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2-sat
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