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Rayan
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Before contest
Codeforces Round 1006 (Div. 3)
45:14:13
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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
335F
Buy One, Get One Free
dp
,
greedy
3000
x670
335E
Counting Skyscrapers
dp
,
math
,
probabilities
2800
x228
335D
Rectangles and Square
brute force
,
dp
2400
x332
335C
More Reclamation
games
2100
x545
335B
Palindrome
constructive algorithms
,
dp
1900
x2154
335A
Banana
binary search
,
constructive algorithms
,
greedy
1400
x2643
334B
Eight Point Sets
sortings
1400
x3632
334A
Candy Bags
implementation
1000
x19018
333E
Summer Earnings
binary search
,
bitmasks
,
brute force
,
geometry
,
sortings
2500
x1167
333D
Characteristics of Rectangles
binary search
,
bitmasks
,
brute force
,
implementation
,
sortings
2100
x2141
333C
Lucky Tickets
brute force
,
constructive algorithms
2700
x396
333B
Chips
greedy
1800
x2664
333A
Secrets
greedy
1600
x4082
332E
Binary Key
dp
,
greedy
,
implementation
2400
x311
332D
Theft of Blueprints
graphs
,
math
2400
x388
332C
Students' Revenge
data structures
,
greedy
,
sortings
2200
x944
332B
Maximum Absurdity
data structures
,
dp
,
implementation
1500
x8142
332A
Down the Hatch!
implementation
1300
x3600
331E2
Deja Vu
constructive algorithms
,
dp
3100
x219
331E1
Deja Vu
constructive algorithms
,
graphs
,
implementation
2900
x166
331D3
Escaping on Beaveractor
data structures
,
implementation
,
trees
3000
x182
331D2
Escaping on Beaveractor
graphs
2600
x139
331D1
Escaping on Beaveractor
dfs and similar
,
implementation
2400
x209
331C3
The Great Julya Calendar
dp
2500
x513
331C2
The Great Julya Calendar
dp
2400
x399
331C1
The Great Julya Calendar
dp
1100
x6363
331B2
Shave Beaver!
data structures
1900
x744
331B1
Shave Beaver!
implementation
1700
x759
331A2
Oh Sweet Beaverette
data structures
,
sortings
1500
x1440
331A1
Oh Sweet Beaverette
brute force
,
implementation
1400
x1406
330B
Road Construction
constructive algorithms
,
graphs
1300
x17702
330A
Cakeminator
brute force
,
implementation
800
x29369
329E
Evil
math
3100
x171
329D
The Evil Temple and the Moving Rocks
constructive algorithms
2500
x413
329C
Graph Reconstruction
constructive algorithms
2400
x939
329B
Biridian Forest
dfs and similar
,
shortest paths
1500
x6649
329A
Purification
constructive algorithms
,
greedy
1500
x4676
328B
Sheldon and Ice Pieces
greedy
1500
x1394
328A
IQ Test
implementation
1800
x2154
327E
Axis Walking
bitmasks
,
combinatorics
,
constructive algorithms
,
dp
,
meet-in-the-middle
2300
x1443
327D
Block Tower
constructive algorithms
,
dfs and similar
,
graphs
1900
x2335
327C
Magic Five
combinatorics
,
math
1700
x3277
327B
Hungry Sequence
math
1200
x20177
327A
Flipping Game
brute force
,
dp
,
implementation
1200
x43582
325E
The Red Button
combinatorics
,
dfs and similar
,
dsu
,
graphs
,
greedy
2800
x845
325D
Reclamation
dsu
2900
x547
325C
Monsters and Diamonds
dfs and similar
,
graphs
,
shortest paths
2600
x352
325B
Stadium and Games
binary search
,
math
1800
x1586
325A
Square and Rectangles
implementation
1500
x2170
323C
Two permutations
data structures
2400
x617
323B
Tournament-graph
constructive algorithms
,
graphs
2200
x408
323A
Black-and-White Cube
combinatorics
,
constructive algorithms
1600
x809
322B
Ciel and Flowers
combinatorics
,
math
1600
x12030
322A
Ciel and Dancing
greedy
1000
x8314
321E
Ciel and Gondolas
data structures
,
divide and conquer
,
dp
2600
x5264
321D
Ciel and Flipboard
dp
,
greedy
,
math
2900
x556
321C
Ciel the Commander
constructive algorithms
,
dfs and similar
,
divide and conquer
,
greedy
,
trees
2100
x7737
321B
Ciel and Duel
dp
,
flows
,
greedy
1900
x3247
321A
Ciel and Robot
binary search
,
implementation
,
math
1700
x3663
320B
Ping-Pong (Easy Version)
dfs and similar
,
graphs
1500
x7383
320A
Magic Numbers
brute force
,
greedy
900
x40300
319E
Ping-Pong
data structures
3000
x672
319D
Have You Ever Heard About the Word?
greedy
,
hashing
,
string suffix structures
,
strings
2800
x678
319C
Kalila and Dimna in the Logging Industry
dp
,
geometry
2100
x5443
319B
Psychos in a Line
data structures
,
implementation
1900
x4291
319A
Malek Dance Club
combinatorics
,
math
1600
x2856
318B
Strings of Power
implementation
,
strings
,
two pointers
1300
x7818
318A
Even Odds
math
900
x120725
317E
Princess and Her Shadow
constructive algorithms
,
shortest paths
3100
x160
317D
Game with Powers
dp
,
games
2300
x1101
317C
Balance
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2500
x516
317B
Ants
brute force
,
implementation
2000
x1611
317A
Perfect Pair
brute force
1600
x4713
316G3
Good Substrings
string suffix structures
2400
x505
316G2
Good Substrings
string suffix structures
2200
x486
316G1
Good Substrings
hashing
,
strings
1700
x1016
316F3
Suns and Rays
constructive algorithms
,
dfs and similar
,
implementation
2200
x184
316F2
Suns and Rays
2300
x167
316F1
Suns and Rays
dfs and similar
,
implementation
2200
x181
316E3
Summer Homework
data structures
,
math
2300
x535
316E2
Summer Homework
data structures
,
math
2300
x401
316E1
Summer Homework
brute force
,
data structures
1500
x1491
316D3
PE Lesson
dp
,
math
2400
x612
316D2
PE Lesson
dp
2300
x466
316D1
PE Lesson
brute force
,
dp
2300
x536
316C2
Tidying Up
flows
,
graph matchings
2300
x638
316C1
Tidying Up
flows
2200
x562
316B2
EKG
dfs and similar
,
dp
1600
x1610
316B1
EKG
brute force
,
dfs and similar
1500
x1396
316A2
Special Task
math
1400
x2167
316A1
Special Task
greedy
1100
x2703
315B
Sereja and Array
implementation
1200
x7111
315A
Sereja and Bottles
brute force
1400
x11432
314E
Sereja and Squares
dp
2900
x373
314D
Sereja and Straight Lines
binary search
,
data structures
,
geometry
,
sortings
,
two pointers
2500
x536
314C
Sereja and Subsequences
data structures
,
dp
2000
x1860
314B
Sereja and Periods
binary search
,
dfs and similar
,
strings
2000
x1546
314A
Sereja and Contest
implementation
1600
x2105
313E
Ilya and Two Numbers
constructive algorithms
,
data structures
,
dsu
,
greedy
2300
x561
313D
Ilya and Roads
dp
2100
x1509
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