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Codeforces Round 937 (Div. 4)
06:06:56
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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
336B
Vasily the Bear and Fly
math
1900
x1175
336A
Vasily the Bear and Triangle
implementation
,
math
1000
x9827
335F
Buy One, Get One Free
dp
,
greedy
3000
x452
335E
Counting Skyscrapers
dp
,
math
,
probabilities
2800
x202
335D
Rectangles and Square
brute force
,
dp
2400
x303
335C
More Reclamation
games
2100
x514
335B
Palindrome
constructive algorithms
,
dp
1900
x1954
335A
Banana
binary search
,
constructive algorithms
,
greedy
1400
x2492
334B
Eight Point Sets
sortings
1400
x3525
334A
Candy Bags
implementation
1000
x17957
333E
Summer Earnings
binary search
,
bitmasks
,
brute force
,
geometry
,
sortings
2500
x1063
333D
Characteristics of Rectangles
binary search
,
bitmasks
,
brute force
,
implementation
,
sortings
2100
x1841
333C
Lucky Tickets
brute force
,
constructive algorithms
2700
x372
333B
Chips
greedy
1800
x2594
333A
Secrets
greedy
1600
x3911
332E
Binary Key
dp
,
greedy
,
implementation
2400
x292
332D
Theft of Blueprints
graphs
,
math
2400
x380
332C
Students' Revenge
data structures
,
greedy
,
sortings
2200
x868
332B
Maximum Absurdity
data structures
,
dp
,
implementation
1500
x7783
332A
Down the Hatch!
implementation
1300
x3516
331E2
Deja Vu
constructive algorithms
,
dp
3100
x215
331E1
Deja Vu
constructive algorithms
,
graphs
,
implementation
2900
x160
331D3
Escaping on Beaveractor
data structures
,
implementation
,
trees
3000
x165
331D2
Escaping on Beaveractor
graphs
2600
x124
331D1
Escaping on Beaveractor
dfs and similar
,
implementation
2400
x189
331C3
The Great Julya Calendar
dp
2500
x458
331C2
The Great Julya Calendar
dp
2400
x360
331C1
The Great Julya Calendar
dp
1100
x5889
331B2
Shave Beaver!
data structures
1900
x670
331B1
Shave Beaver!
implementation
1700
x714
331A2
Oh Sweet Beaverette
data structures
,
sortings
1500
x1371
331A1
Oh Sweet Beaverette
brute force
,
implementation
1400
x1320
330B
Road Construction
constructive algorithms
,
graphs
1300
x16091
330A
Cakeminator
brute force
,
implementation
800
x27200
329E
Evil
math
3100
x162
329D
The Evil Temple and the Moving Rocks
constructive algorithms
2500
x386
329C
Graph Reconstruction
constructive algorithms
2400
x873
329B
Biridian Forest
dfs and similar
,
shortest paths
1500
x5979
329A
Purification
constructive algorithms
,
greedy
1500
x4578
328B
Sheldon and Ice Pieces
greedy
1500
x1239
328A
IQ Test
implementation
1800
x1914
327E
Axis Walking
bitmasks
,
combinatorics
,
constructive algorithms
,
dp
,
meet-in-the-middle
2300
x1324
327D
Block Tower
constructive algorithms
,
dfs and similar
,
graphs
1900
x2175
327C
Magic Five
combinatorics
,
math
1700
x3095
327B
Hungry Sequence
math
1200
x18795
327A
Flipping Game
brute force
,
dp
,
implementation
1200
x39543
325E
The Red Button
combinatorics
,
dfs and similar
,
dsu
,
graphs
,
greedy
2800
x741
325D
Reclamation
dsu
2900
x482
325C
Monsters and Diamonds
dfs and similar
,
graphs
,
shortest paths
2600
x330
325B
Stadium and Games
binary search
,
math
1800
x1464
325A
Square and Rectangles
implementation
1500
x2124
323C
Two permutations
data structures
2400
x561
323B
Tournament-graph
constructive algorithms
,
graphs
2200
x358
323A
Black-and-White Cube
combinatorics
,
constructive algorithms
1600
x711
322B
Ciel and Flowers
combinatorics
,
math
1600
x11402
322A
Ciel and Dancing
greedy
1000
x7909
321E
Ciel and Gondolas
data structures
,
divide and conquer
,
dp
2600
x4426
321D
Ciel and Flipboard
dp
,
greedy
,
math
2900
x523
321C
Ciel the Commander
constructive algorithms
,
dfs and similar
,
divide and conquer
,
greedy
,
trees
2100
x6632
321B
Ciel and Duel
dp
,
flows
,
greedy
1900
x2927
321A
Ciel and Robot
binary search
,
implementation
,
math
1700
x3541
320B
Ping-Pong (Easy Version)
dfs and similar
,
graphs
1500
x7040
320A
Magic Numbers
brute force
,
greedy
900
x33110
319E
Ping-Pong
data structures
3000
x622
319D
Have You Ever Heard About the Word?
greedy
,
hashing
,
string suffix structures
,
strings
2800
x595
319C
Kalila and Dimna in the Logging Industry
dp
,
geometry
2100
x4678
319B
Psychos in a Line
data structures
,
implementation
1900
x3992
319A
Malek Dance Club
combinatorics
,
math
1600
x2747
318B
Strings of Power
implementation
,
strings
,
two pointers
1300
x7334
318A
Even Odds
math
900
x104454
317E
Princess and Her Shadow
constructive algorithms
,
shortest paths
3100
x150
317D
Game with Powers
dp
,
games
2300
x965
317C
Balance
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2500
x486
317B
Ants
brute force
,
implementation
2000
x1537
317A
Perfect Pair
brute force
1600
x4510
316G3
Good Substrings
string suffix structures
2400
x469
316G2
Good Substrings
string suffix structures
2200
x459
316G1
Good Substrings
hashing
,
strings
1700
x921
316F3
Suns and Rays
constructive algorithms
,
dfs and similar
,
implementation
2200
x161
316F2
Suns and Rays
2300
x147
316F1
Suns and Rays
dfs and similar
,
implementation
2200
x162
316E3
Summer Homework
data structures
,
math
2300
x503
316E2
Summer Homework
data structures
,
math
2300
x377
316E1
Summer Homework
brute force
,
data structures
1500
x1443
316D3
PE Lesson
dp
,
math
2400
x524
316D2
PE Lesson
dp
2300
x414
316D1
PE Lesson
brute force
,
dp
2300
x476
316C2
Tidying Up
flows
,
graph matchings
2300
x605
316C1
Tidying Up
flows
2200
x541
316B2
EKG
dfs and similar
,
dp
1600
x1558
316B1
EKG
brute force
,
dfs and similar
1500
x1355
316A2
Special Task
math
1400
x2087
316A1
Special Task
greedy
1100
x2570
315B
Sereja and Array
implementation
1200
x6814
315A
Sereja and Bottles
brute force
1400
x10631
314E
Sereja and Squares
dp
2900
x351
314D
Sereja and Straight Lines
binary search
,
data structures
,
geometry
,
sortings
,
two pointers
2500
x513
314C
Sereja and Subsequences
data structures
,
dp
2000
x1757
314B
Sereja and Periods
binary search
,
dfs and similar
,
strings
2000
x1450
314A
Sereja and Contest
implementation
1600
x2048
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