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Rayan
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Before contest
Codeforces Round 1006 (Div. 3)
29:04:59
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combine-tags-by-or
*combine tags by OR
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
587E
Duff as a Queen
data structures
2900
x735
587D
Duff in Mafia
2-sat
,
binary search
3100
x782
587C
Duff in the Army
data structures
,
trees
2200
x4115
587B
Duff in Beach
dp
2100
x1431
587A
Duff and Weight Lifting
greedy
1500
x7770
586B
Laurenty and Shop
implementation
1300
x5176
586A
Alena's Schedule
implementation
900
x10265
585F
Digits of Number Pi
dp
,
implementation
,
strings
3200
x709
585E
Present for Vitalik the Philatelist
combinatorics
,
math
,
number theory
2900
x1133
585D
Lizard Era: Beginning
meet-in-the-middle
2300
x1693
585C
Alice, Bob, Oranges and Apples
number theory
2400
x996
585B
Phillip and Trains
dfs and similar
,
graphs
,
shortest paths
1700
x3616
585A
Gennady the Dentist
brute force
,
implementation
1800
x4353
584E
Anton and Ira
constructive algorithms
,
greedy
,
math
2300
x1440
584D
Dima and Lisa
brute force
,
math
,
number theory
1800
x9703
584C
Marina and Vasya
constructive algorithms
,
greedy
,
strings
1700
x6303
584B
Kolya and Tanya
combinatorics
1500
x12305
584A
Olesya and Rodion
math
1000
x47104
583B
Robot's Task
greedy
,
implementation
1200
x8789
583A
Asphalting Roads
implementation
1000
x11502
582E
Boolean Function
bitmasks
,
dp
,
expression parsing
3000
x512
582D
Number of Binominal Coefficients
dp
,
math
,
number theory
3300
x672
582C
Superior Periodic Subarrays
number theory
2400
x753
582B
Once Again...
constructive algorithms
,
dp
,
matrices
1900
x3464
582A
GCD Table
constructive algorithms
,
greedy
,
number theory
1700
x7886
581F
Zublicanes and Mumocrates
dp
,
trees
,
two pointers
2400
x912
581E
Kojiro and Furrari
dp
,
greedy
2800
x191
581D
Three Logos
bitmasks
,
brute force
,
constructive algorithms
,
geometry
,
implementation
,
math
1700
x3944
581C
Developing Skills
implementation
,
math
,
sortings
1400
x7368
581B
Luxurious Houses
implementation
,
math
1100
x13192
581A
Vasya the Hipster
implementation
,
math
800
x74453
580E
Kefa and Watch
data structures
,
hashing
,
strings
2500
x2192
580D
Kefa and Dishes
bitmasks
,
dp
1800
x10250
580C
Kefa and Park
dfs and similar
,
graphs
,
trees
1500
x45747
580B
Kefa and Company
binary search
,
sortings
,
two pointers
1500
x27723
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x91858
579B
Finding Team Member
brute force
,
implementation
,
sortings
1300
x5313
579A
Raising Bacteria
bitmasks
1000
x64956
578F
Mirror Box
matrices
,
trees
3200
x560
578E
Walking!
constructive algorithms
,
greedy
2700
x649
578D
LCS Again
dp
,
greedy
2700
x901
578C
Weakness and Poorness
ternary search
2000
x4657
578B
"Or" Game
brute force
,
greedy
1700
x5281
578A
A Problem about Polyline
geometry
,
math
1700
x4803
577B
Modulo Sum
combinatorics
,
data structures
,
dp
,
two pointers
1900
x12683
577A
Multiplication Table
implementation
,
number theory
1000
x41182
576E
Painting Edges
binary search
,
data structures
3300
x1299
576D
Flights for Regular Customers
dp
,
matrices
2700
x1442
576C
Points on Plane
constructive algorithms
,
divide and conquer
,
geometry
,
greedy
,
sortings
2100
x3597
576B
Invariance of Tree
constructive algorithms
,
dfs and similar
,
greedy
,
trees
2100
x1826
576A
Vasya and Petya's Game
math
,
number theory
1500
x14422
575I
Robots protection
data structures
2800
x486
575H
Bots
combinatorics
,
dp
,
math
,
number theory
1800
x1733
575G
Run for beer
dfs and similar
,
shortest paths
2200
x910
575F
Bulbo
dp
,
greedy
2100
x1052
575E
Spectator Riots
geometry
2800
x291
575D
Tablecity
constructive algorithms
,
implementation
1700
x1885
575C
Party
bitmasks
,
brute force
,
graph matchings
2700
x228
575B
Bribes
dfs and similar
,
graphs
,
trees
2200
x1110
575A
Fibonotci
data structures
,
math
,
matrices
2700
x817
574B
Bear and Three Musketeers
brute force
,
dfs and similar
,
graphs
,
hashing
1500
x7924
574A
Bear and Elections
greedy
,
implementation
1200
x9162
573E
Bear and Bowling
data structures
,
greedy
3200
x1804
573D
Bear and Cavalry
data structures
,
divide and conquer
,
dp
3000
x596
573C
Bear and Drawing
constructive algorithms
,
dfs and similar
,
trees
2300
x980
573B
Bear and Blocks
binary search
,
data structures
,
dp
,
math
1600
x6010
573A
Bear and Poker
implementation
,
math
,
number theory
1300
x16876
572B
Order Book
data structures
,
greedy
,
implementation
,
sortings
1300
x7160
572A
Arrays
sortings
900
x16869
571E
Geometric Progressions
math
3200
x276
571D
Campus
binary search
,
data structures
,
dsu
,
trees
3100
x709
571C
CNF 2
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
2500
x681
571B
Minimization
dp
,
greedy
,
sortings
2000
x2676
571A
Lengthening Sticks
combinatorics
,
implementation
,
math
2100
x2354
570E
Pig and Palindromes
combinatorics
,
dp
2300
x1937
570D
Tree Requests
binary search
,
bitmasks
,
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2200
x7554
570C
Replacement
constructive algorithms
,
data structures
,
implementation
1600
x9288
570B
Simple Game
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1300
x16325
570A
Elections
implementation
1100
x13969
569B
Inventory
greedy
,
math
1200
x7160
569A
Music
implementation
,
math
1500
x4840
568E
Longest Increasing Subsequence
data structures
,
dp
3000
x603
568D
Sign Posts
brute force
,
geometry
,
math
2800
x308
568C
New Language
2-sat
,
greedy
2600
x872
568B
Symmetric and Transitive
combinatorics
,
dp
,
math
1900
x2266
568A
Primes or Palindromes?
brute force
,
implementation
,
math
,
number theory
1600
x5169
567F
Mausoleum
dp
2400
x597
567E
President and Roads
dfs and similar
,
graphs
,
hashing
,
shortest paths
2200
x1850
567D
One-Dimensional Battle Ships
binary search
,
data structures
,
greedy
,
sortings
1700
x4898
567C
Geometric Progression
binary search
,
data structures
,
dp
1700
x9717
567B
Berland National Library
implementation
1300
x8501
567A
Lineland Mail
greedy
,
implementation
900
x33246
566G
Max and Min
geometry
2500
x340
566F
Clique in the Divisibility Graph
dp
,
math
,
number theory
1500
x3765
566E
Restoring Map
bitmasks
,
constructive algorithms
,
trees
3200
x644
566D
Restructuring Company
data structures
,
dsu
1900
x3393
566C
Logistical Questions
dfs and similar
,
divide and conquer
,
trees
3000
x785
566B
Replicating Processes
constructive algorithms
,
greedy
2600
x277
566A
Matching Names
dfs and similar
,
strings
,
trees
2300
x928
560B
Gerald is into Art
constructive algorithms
,
implementation
1200
x8006
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