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Rayan
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Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)
3 days
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Difficulty:
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combine-tags-by-or
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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
594E
Cutting the Line
string suffix structures
,
strings
3100
x162
594D
REQ
data structures
,
number theory
2500
x1639
594C
Edo and Magnets
brute force
,
greedy
,
implementation
,
two pointers
2300
x690
594B
Max and Bike
binary search
,
geometry
2500
x501
594A
Warrior and Archer
games
2300
x1736
593E
Strange Calculation and Cats
dp
,
matrices
2400
x644
593D
Happy Tree Party
data structures
,
dfs and similar
,
graphs
,
math
,
trees
2400
x1266
593C
Beautiful Function
constructive algorithms
,
math
2200
x284
593B
Anton and Lines
geometry
,
sortings
1600
x4061
592E
BCPC
binary search
,
geometry
,
two pointers
2700
x216
592D
Super M
dfs and similar
,
dp
,
graphs
,
trees
2200
x2649
592C
The Big Race
math
1800
x3070
590E
Birthday
graph matchings
,
strings
3200
x790
590D
Top Secret Task
dp
2300
x1215
590C
Three States
dfs and similar
,
graphs
,
shortest paths
2200
x2819
590B
Chip 'n Dale Rescue Rangers
binary search
,
geometry
,
math
2100
x1917
590A
Median Smoothing
implementation
1700
x3983
587F
Duff is Mad
data structures
,
strings
3000
x1067
587E
Duff as a Queen
data structures
2900
x723
587D
Duff in Mafia
2-sat
,
binary search
3100
x758
587C
Duff in the Army
data structures
,
trees
2200
x3987
587B
Duff in Beach
dp
2100
x1425
585F
Digits of Number Pi
dp
,
implementation
,
strings
3200
x688
585E
Present for Vitalik the Philatelist
combinatorics
,
math
,
number theory
2900
x1114
585D
Lizard Era: Beginning
meet-in-the-middle
2300
x1640
585C
Alice, Bob, Oranges and Apples
number theory
2400
x988
585B
Phillip and Trains
dfs and similar
,
graphs
,
shortest paths
1700
x3581
585A
Gennady the Dentist
brute force
,
implementation
1800
x4341
584E
Anton and Ira
constructive algorithms
,
greedy
,
math
2300
x1431
584D
Dima and Lisa
brute force
,
math
,
number theory
1800
x9479
584C
Marina and Vasya
constructive algorithms
,
greedy
,
strings
1700
x6258
582E
Boolean Function
bitmasks
,
dp
,
expression parsing
3000
x500
582D
Number of Binominal Coefficients
dp
,
math
,
number theory
3300
x659
582C
Superior Periodic Subarrays
number theory
2400
x746
582B
Once Again...
constructive algorithms
,
dp
,
matrices
1900
x3451
582A
GCD Table
constructive algorithms
,
greedy
,
number theory
1700
x7823
581F
Zublicanes and Mumocrates
dp
,
trees
,
two pointers
2400
x879
581E
Kojiro and Furrari
dp
,
greedy
2800
x191
581D
Three Logos
bitmasks
,
brute force
,
constructive algorithms
,
geometry
,
implementation
,
math
1700
x3777
580E
Kefa and Watch
data structures
,
hashing
,
strings
2500
x2094
580D
Kefa and Dishes
bitmasks
,
dp
1800
x9948
578F
Mirror Box
matrices
,
trees
3200
x553
578E
Walking!
constructive algorithms
,
greedy
2700
x643
578D
LCS Again
dp
,
greedy
2700
x874
578C
Weakness and Poorness
ternary search
2000
x4515
578B
"Or" Game
brute force
,
greedy
1700
x5239
578A
A Problem about Polyline
geometry
,
math
1700
x4773
577B
Modulo Sum
combinatorics
,
data structures
,
dp
,
two pointers
1900
x12353
576E
Painting Edges
binary search
,
data structures
3300
x1250
576D
Flights for Regular Customers
dp
,
matrices
2700
x1423
576C
Points on Plane
constructive algorithms
,
divide and conquer
,
geometry
,
greedy
,
sortings
2100
x3488
576B
Invariance of Tree
constructive algorithms
,
dfs and similar
,
greedy
,
trees
2100
x1815
575I
Robots protection
data structures
2800
x466
575H
Bots
combinatorics
,
dp
,
math
,
number theory
1800
x1710
575G
Run for beer
dfs and similar
,
shortest paths
2200
x900
575F
Bulbo
dp
,
greedy
2100
x1040
575E
Spectator Riots
geometry
2800
x288
575D
Tablecity
constructive algorithms
,
implementation
1700
x1878
575C
Party
bitmasks
,
brute force
,
graph matchings
2700
x223
575B
Bribes
dfs and similar
,
graphs
,
trees
2200
x1089
575A
Fibonotci
data structures
,
math
,
matrices
2700
x808
573E
Bear and Bowling
data structures
,
greedy
3200
x1768
573D
Bear and Cavalry
data structures
,
divide and conquer
,
dp
3000
x571
573C
Bear and Drawing
constructive algorithms
,
dfs and similar
,
trees
2300
x971
573B
Bear and Blocks
binary search
,
data structures
,
dp
,
math
1600
x5962
571E
Geometric Progressions
math
3200
x270
571D
Campus
binary search
,
data structures
,
dsu
,
trees
3100
x683
571C
CNF 2
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
2500
x671
571B
Minimization
dp
,
greedy
,
sortings
2000
x2659
571A
Lengthening Sticks
combinatorics
,
implementation
,
math
2100
x2330
570E
Pig and Palindromes
combinatorics
,
dp
2300
x1909
570D
Tree Requests
binary search
,
bitmasks
,
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2200
x7346
570C
Replacement
constructive algorithms
,
data structures
,
implementation
1600
x9189
568E
Longest Increasing Subsequence
data structures
,
dp
3000
x600
568D
Sign Posts
brute force
,
geometry
,
math
2800
x308
568C
New Language
2-sat
,
greedy
2600
x868
568B
Symmetric and Transitive
combinatorics
,
dp
,
math
1900
x2252
568A
Primes or Palindromes?
brute force
,
implementation
,
math
,
number theory
1600
x5121
567F
Mausoleum
dp
2400
x588
567E
President and Roads
dfs and similar
,
graphs
,
hashing
,
shortest paths
2200
x1779
567D
One-Dimensional Battle Ships
binary search
,
data structures
,
greedy
,
sortings
1700
x4822
567C
Geometric Progression
binary search
,
data structures
,
dp
1700
x9619
566G
Max and Min
geometry
2500
x336
566E
Restoring Map
bitmasks
,
constructive algorithms
,
trees
3200
x637
566D
Restructuring Company
data structures
,
dsu
1900
x3319
566C
Logistical Questions
dfs and similar
,
divide and conquer
,
trees
3000
x764
566B
Replicating Processes
constructive algorithms
,
greedy
2600
x273
566A
Matching Names
dfs and similar
,
strings
,
trees
2300
x921
559E
Gerald and Path
dp
,
sortings
3000
x949
559D
Randomizer
combinatorics
,
geometry
,
probabilities
2800
x441
559C
Gerald and Giant Chess
combinatorics
,
dp
,
math
,
number theory
2200
x6614
559B
Equivalent Strings
divide and conquer
,
hashing
,
sortings
,
strings
1700
x10707
559A
Gerald's Hexagon
brute force
,
geometry
,
math
1600
x10471
558E
A Simple Task
data structures
,
sortings
,
strings
2300
x6171
558D
Guess Your Way Out! II
data structures
,
implementation
,
sortings
2300
x1151
558C
Amr and Chemistry
brute force
,
graphs
,
greedy
,
math
,
shortest paths
1900
x3996
557E
Ann and Half-Palindrome
data structures
,
dp
,
graphs
,
string suffix structures
,
strings
,
trees
2300
x1091
557D
Vitaly and Cycle
combinatorics
,
dfs and similar
,
graphs
,
math
2000
x2215
557C
Arthur and Table
brute force
,
data structures
,
dp
,
greedy
,
math
,
sortings
1900
x4032
555E
Case of Computer Network
dfs and similar
,
graphs
,
trees
2800
x2414
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