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Before contest
Codeforces Round 941 (Div. 1)
02:20:15
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Before contest
Codeforces Round 941 (Div. 2)
02:20:15
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→ Filter Problems
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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
49B
Sum
math
1500
x2382
49A
Sleuth
implementation
800
x12867
48H
Black and White
constructive algorithms
2800
x133
48G
Galaxy Union
dp
,
trees
,
two pointers
2700
x254
48F
Snow sellers
greedy
,
sortings
2800
x133
48E
Ivan the Fool VS Gorynych the Dragon
dp
,
games
,
graphs
2100
x560
48D
Permutations
greedy
1500
x2404
48C
The Race
math
1800
x755
48B
Land Lot
brute force
,
implementation
1200
x2599
48A
Rock-paper-scissors
implementation
,
schedules
900
x5596
47E
Cannon
data structures
,
geometry
,
sortings
2200
x352
47D
Safe
brute force
2200
x741
47C
Crossword
implementation
2000
x739
47B
Coins
implementation
1200
x12978
47A
Triangular numbers
brute force
,
math
800
x14239
46G
Emperor's Problem
geometry
2500
x108
46F
Hercule Poirot Problem
dsu
,
graphs
2300
x306
46E
Comb
data structures
,
dp
1900
x916
46D
Parking Lot
data structures
,
implementation
1800
x957
46C
Hamsters and Tigers
two pointers
1600
x2214
46B
T-shirts from Sponsor
implementation
1100
x3528
46A
Ball Game
brute force
,
implementation
800
x8373
45J
Planting Trees
constructive algorithms
1800
x884
45I
TCMCF+++
greedy
1400
x2300
45H
Road Problem
graphs
2100
x174
45G
Prime Problem
number theory
2200
x993
45F
Goats and Wolves
greedy
2500
x123
45E
Director
constructive algorithms
,
greedy
2000
x522
45D
Event Dates
greedy
,
meet-in-the-middle
,
sortings
1900
x1587
45C
Dancing Lessons
data structures
1900
x849
45B
School
dp
,
dsu
2200
x266
45A
Codecraft III
implementation
900
x6311
44J
Triminoes
constructive algorithms
,
greedy
2000
x554
44I
Toys
brute force
,
combinatorics
2300
x181
44H
Phone Number
dp
1700
x1672
44G
Shooting Gallery
data structures
,
implementation
2500
x361
44F
BerPaint
geometry
,
graphs
2700
x64
44E
Anfisa the Monkey
dp
1400
x4800
44D
Hyperdrive
math
1800
x688
44C
Holidays
implementation
1300
x3198
44B
Cola
implementation
1500
x1897
44A
Indian Summer
implementation
900
x9382
43E
Race
brute force
,
implementation
,
two pointers
2300
x370
43D
Journey
brute force
,
constructive algorithms
,
implementation
2000
x1045
43C
Lucky Tickets
greedy
1300
x4135
43B
Letter
implementation
,
strings
1100
x15636
43A
Football
strings
1000
x51896
42E
Baldman and the military
dfs and similar
,
graphs
,
trees
2700
x187
42D
Strange town
constructive algorithms
,
math
2300
x385
42C
Safe cracking
brute force
,
constructive algorithms
2200
x444
42B
Game of chess unfinished
implementation
1700
x919
42A
Guilty --- to the kitchen!
greedy
,
implementation
1400
x2742
41E
3-cycles
constructive algorithms
,
graphs
,
greedy
1900
x1892
41D
Pawn
dp
1900
x2167
41C
Email address
expression parsing
,
implementation
1300
x3633
41B
Martian Dollar
brute force
1400
x3851
41A
Translation
implementation
,
strings
800
x134344
40E
Number Table
combinatorics
2500
x654
40D
Interesting Sequence
math
2600
x124
40C
Berland Square
implementation
,
math
2300
x239
40B
Repaintings
math
1600
x1110
40A
Find Color
constructive algorithms
,
geometry
,
implementation
,
math
1300
x3838
39K
Testing
2600
x82
39J
Spelling Check
hashing
,
implementation
,
strings
1500
x2784
39I
Tram
2500
x122
39H
Multiplication Table
implementation
1300
x2602
39G
Inverse Function
implementation
2400
x123
39F
Pacifist frogs
implementation
1300
x1482
39E
What Has Dirichlet Got to Do with That?
dp
,
games
2000
x852
39D
Cubical Planet
math
1100
x3735
39C
Moon Craters
dp
,
sortings
2100
x568
39B
Company Income Growth
greedy
1300
x2554
39A
C*++ Calculations
expression parsing
,
greedy
2000
x655
38H
The Great Marathon
dp
2400
x263
38G
Queue
data structures
2300
x673
38F
Smart Boy
dp
,
games
,
strings
2100
x374
38E
Let's Go Rolling!
dp
,
sortings
1800
x2481
38D
Vasya the Architect
implementation
1900
x470
38C
Blinds
brute force
1400
x2080
38B
Chess
brute force
,
implementation
,
math
1200
x3382
38A
Army
implementation
800
x20479
37E
Trial for Chief
graphs
,
greedy
,
shortest paths
2600
x566
37D
Lesson Timetable
combinatorics
,
dp
,
math
2300
x387
37C
Old Berland Language
data structures
,
greedy
,
trees
1900
x1491
37B
Computer Game
greedy
,
implementation
1800
x861
37A
Towers
sortings
1000
x23522
36E
Two Paths
constructive algorithms
,
dsu
,
graphs
,
implementation
2600
x494
36D
New Game with a Chess Piece
games
2300
x674
36C
Bowls
geometry
,
implementation
2200
x294
36B
Fractal
implementation
1600
x1415
36A
Extra-terrestrial Intelligence
implementation
1300
x2891
35E
Parade
data structures
,
sortings
2100
x701
35D
Animals
dp
,
greedy
1700
x3139
35C
Fire Again
brute force
,
dfs and similar
,
shortest paths
1500
x6234
35B
Warehouse
implementation
1700
x988
35A
Shell Game
implementation
1000
x6609
34E
Collisions
brute force
,
implementation
,
math
2000
x563
34D
Road Map
dfs and similar
,
graphs
1600
x4847
34C
Page Numbers
expression parsing
,
implementation
,
sortings
,
strings
1300
x4062
34B
Sale
greedy
,
sortings
900
x48419
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