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Before contest
Codeforces Round 1134 (Div. 4)
43:32:22
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Difficulty:
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combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
communication
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
593E
Strange Calculation and Cats
dp
,
matrices
2400
x729
593D
Happy Tree Party
data structures
,
dfs and similar
,
graphs
,
math
,
trees
2400
x1495
593C
Beautiful Function
constructive algorithms
,
math
2200
x343
593B
Anton and Lines
geometry
,
sortings
1600
x4248
593A
2Char
brute force
,
implementation
1200
x6231
592E
BCPC
binary search
,
geometry
,
two pointers
2700
x290
592D
Super M
dfs and similar
,
dp
,
graphs
,
trees
2200
x3110
592C
The Big Race
math
1800
x3213
592B
The Monster and the Squirrel
math
1100
x8910
592A
PawnChess
implementation
1200
x6586
591B
Rebranding
implementation
,
strings
1200
x8740
591A
Wizards' Duel
implementation
,
math
900
x17957
590E
Birthday
graph matchings
,
strings
3200
x972
590D
Top Secret Task
dp
2300
x1462
590C
Three States
dfs and similar
,
graphs
,
shortest paths
2200
x3816
590B
Chip 'n Dale Rescue Rangers
binary search
,
geometry
,
math
2100
x2083
590A
Median Smoothing
implementation
1700
x4416
588B
Duff in Love
math
1300
x15238
588A
Duff and Meat
greedy
900
x24782
587F
Duff is Mad
data structures
,
strings
3000
x1618
587E
Duff as a Queen
data structures
2900
x1079
587D
Duff in Mafia
2-sat
,
binary search
3100
x1047
587C
Duff in the Army
data structures
,
trees
2200
x5139
587B
Duff in Beach
dp
2100
x1527
587A
Duff and Weight Lifting
greedy
1500
x8532
586B
Laurenty and Shop
implementation
1300
x5275
586A
Alena's Schedule
implementation
900
x10695
585F
Digits of Number Pi
dp
,
implementation
,
strings
3200
x967
585E
Present for Vitalik the Philatelist
combinatorics
,
math
,
number theory
2900
x1308
585D
Lizard Era: Beginning
meet-in-the-middle
2300
x2221
585C
Alice, Bob, Oranges and Apples
number theory
2400
x1095
585B
Phillip and Trains
dfs and similar
,
graphs
,
shortest paths
1700
x3859
585A
Gennady the Dentist
brute force
,
implementation
1800
x4493
584E
Anton and Ira
constructive algorithms
,
greedy
,
math
2300
x1550
584D
Dima and Lisa
brute force
,
math
,
number theory
1800
x11562
584C
Marina and Vasya
constructive algorithms
,
greedy
,
strings
1700
x6594
584B
Kolya and Tanya
combinatorics
1500
x14261
584A
Olesya and Rodion
math
1000
x54821
583B
Robot's Task
greedy
,
implementation
1200
x9039
583A
Asphalting Roads
implementation
1000
x11839
582E
Boolean Function
bitmasks
,
dp
,
expression parsing
3000
x737
582D
Number of Binominal Coefficients
dp
,
math
,
number theory
3300
x863
582C
Superior Periodic Subarrays
number theory
2400
x829
582B
Once Again...
constructive algorithms
,
dp
,
matrices
1900
x3729
582A
GCD Table
constructive algorithms
,
greedy
,
number theory
1700
x8481
581F
Zublicanes and Mumocrates
dp
,
trees
,
two pointers
2400
x1101
581E
Kojiro and Furrari
dp
,
greedy
2800
x267
581D
Three Logos
bitmasks
,
brute force
,
constructive algorithms
,
geometry
,
implementation
,
math
1700
x5169
581C
Developing Skills
implementation
,
math
,
sortings
1400
x7701
581B
Luxurious Houses
implementation
,
math
1100
x13828
581A
Vasya the Hipster
implementation
,
math
800
x88880
580E
Kefa and Watch
data structures
,
hashing
,
strings
2500
x2826
580D
Kefa and Dishes
bitmasks
,
dp
1800
x13176
580C
Kefa and Park
dfs and similar
,
graphs
,
trees
1500
x61004
580B
Kefa and Company
binary search
,
sortings
,
two pointers
1500
x34256
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x112986
579B
Finding Team Member
brute force
,
implementation
,
sortings
1300
x5550
579A
Raising Bacteria
bitmasks
1000
x84904
578F
Mirror Box
matrices
,
trees
3200
x671
578E
Walking!
constructive algorithms
,
greedy
2700
x703
578D
LCS Again
dp
,
greedy
2700
x1029
578C
Weakness and Poorness
ternary search
2000
x5491
578B
"Or" Game
brute force
,
greedy
1700
x5562
578A
A Problem about Polyline
geometry
,
math
1700
x5005
577B
Modulo Sum
combinatorics
,
data structures
,
dp
,
two pointers
1900
x16256
577A
Multiplication Table
implementation
,
number theory
1000
x46809
576E
Painting Edges
binary search
,
data structures
3300
x1637
576D
Flights for Regular Customers
dp
,
matrices
2700
x1713
576C
Points on Plane
constructive algorithms
,
divide and conquer
,
geometry
,
greedy
,
sortings
2100
x4528
576B
Invariance of Tree
constructive algorithms
,
dfs and similar
,
greedy
,
trees
2100
x1962
576A
Vasya and Petya's Game
math
,
number theory
1500
x16302
575I
Robots protection
data structures
2800
x614
575H
Bots
combinatorics
,
dp
,
math
,
number theory
1800
x1929
575G
Run for beer
dfs and similar
,
shortest paths
2200
x1059
575F
Bulbo
dp
,
greedy
2100
x1143
575E
Spectator Riots
geometry
2800
x317
575D
Tablecity
constructive algorithms
,
implementation
1700
x2017
575C
Party
bitmasks
,
brute force
,
graph matchings
2700
x246
575B
Bribes
dfs and similar
,
graphs
,
trees
2200
x1314
575A
Fibonotci
data structures
,
math
,
matrices
2700
x899
574B
Bear and Three Musketeers
brute force
,
dfs and similar
,
graphs
,
hashing
1500
x8504
574A
Bear and Elections
greedy
,
implementation
1200
x9652
573E
Bear and Bowling
data structures
,
greedy
3200
x2181
573D
Bear and Cavalry
data structures
,
divide and conquer
,
dp
3000
x904
573C
Bear and Drawing
constructive algorithms
,
dfs and similar
,
trees
2300
x1061
573B
Bear and Blocks
binary search
,
data structures
,
dp
,
math
1600
x6493
573A
Bear and Poker
implementation
,
math
,
number theory
1300
x19096
572B
Order Book
data structures
,
greedy
,
implementation
,
sortings
1300
x9315
572A
Arrays
sortings
900
x18840
571E
Geometric Progressions
math
3200
x410
571D
Campus
binary search
,
data structures
,
dsu
,
trees
3100
x1247
571C
CNF 2
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
2500
x765
571B
Minimization
dp
,
greedy
,
sortings
2000
x2917
571A
Lengthening Sticks
combinatorics
,
implementation
,
math
2100
x2750
570E
Pig and Palindromes
combinatorics
,
dp
2300
x2220
570D
Tree Requests
binary search
,
bitmasks
,
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2200
x9750
570C
Replacement
constructive algorithms
,
data structures
,
implementation
1600
x9656
570B
Simple Game
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1300
x17060
570A
Elections
implementation
1100
x14445
569B
Inventory
greedy
,
math
1200
x7610
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