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Rayan Programming Contest
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Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
6 days
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Difficulty:
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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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Status
Standings
Custom test
Problems
#
Name
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
x1637
585C
Alice, Bob, Oranges and Apples
number theory
2400
x988
585B
Phillip and Trains
dfs and similar
,
graphs
,
shortest paths
1700
x3580
585A
Gennady the Dentist
brute force
,
implementation
1800
x4341
584E
Anton and Ira
constructive algorithms
,
greedy
,
math
2300
x1430
584D
Dima and Lisa
brute force
,
math
,
number theory
1800
x9473
584C
Marina and Vasya
constructive algorithms
,
greedy
,
strings
1700
x6258
584B
Kolya and Tanya
combinatorics
1500
x12053
584A
Olesya and Rodion
math
1000
x45689
583B
Robot's Task
greedy
,
implementation
1200
x8735
583A
Asphalting Roads
implementation
1000
x11461
582E
Boolean Function
bitmasks
,
dp
,
expression parsing
3000
x500
582D
Number of Binominal Coefficients
dp
,
math
,
number theory
3300
x658
582C
Superior Periodic Subarrays
number theory
2400
x746
582B
Once Again...
constructive algorithms
,
dp
,
matrices
1900
x3449
582A
GCD Table
constructive algorithms
,
greedy
,
number theory
1700
x7822
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
x3775
581C
Developing Skills
implementation
,
math
,
sortings
1400
x7338
581B
Luxurious Houses
implementation
,
math
1100
x13095
581A
Vasya the Hipster
implementation
,
math
800
x72078
580E
Kefa and Watch
data structures
,
hashing
,
strings
2500
x2089
580D
Kefa and Dishes
bitmasks
,
dp
1800
x9938
580C
Kefa and Park
dfs and similar
,
graphs
,
trees
1500
x43780
580B
Kefa and Company
binary search
,
sortings
,
two pointers
1500
x26820
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x89361
579B
Finding Team Member
brute force
,
implementation
,
sortings
1300
x5263
579A
Raising Bacteria
bitmasks
1000
x62150
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
x4514
578B
"Or" Game
brute force
,
greedy
1700
x5233
578A
A Problem about Polyline
geometry
,
math
1700
x4773
577B
Modulo Sum
combinatorics
,
data structures
,
dp
,
two pointers
1900
x12342
577A
Multiplication Table
implementation
,
number theory
1000
x40215
576E
Painting Edges
binary search
,
data structures
3300
x1249
576D
Flights for Regular Customers
dp
,
matrices
2700
x1422
576C
Points on Plane
constructive algorithms
,
divide and conquer
,
geometry
,
greedy
,
sortings
2100
x3484
576B
Invariance of Tree
constructive algorithms
,
dfs and similar
,
greedy
,
trees
2100
x1815
576A
Vasya and Petya's Game
math
,
number theory
1500
x14049
575I
Robots protection
data structures
2800
x466
575H
Bots
combinatorics
,
dp
,
math
,
number theory
1800
x1692
575G
Run for beer
dfs and similar
,
shortest paths
2200
x893
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
x1079
575A
Fibonotci
data structures
,
math
,
matrices
2700
x808
574B
Bear and Three Musketeers
brute force
,
dfs and similar
,
graphs
,
hashing
1500
x7828
574A
Bear and Elections
greedy
,
implementation
1200
x9099
573E
Bear and Bowling
data structures
,
greedy
3200
x1767
573D
Bear and Cavalry
data structures
,
divide and conquer
,
dp
3000
x569
573C
Bear and Drawing
constructive algorithms
,
dfs and similar
,
trees
2300
x971
573B
Bear and Blocks
binary search
,
data structures
,
dp
,
math
1600
x5960
573A
Bear and Poker
implementation
,
math
,
number theory
1300
x16732
572B
Order Book
data structures
,
greedy
,
implementation
,
sortings
1300
x7007
572A
Arrays
sortings
900
x16663
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
x2657
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
x7339
570C
Replacement
constructive algorithms
,
data structures
,
implementation
1600
x9188
570B
Simple Game
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1300
x16202
570A
Elections
implementation
1100
x13914
569B
Inventory
greedy
,
math
1200
x7112
569A
Music
implementation
,
math
1500
x4819
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
x867
568B
Symmetric and Transitive
combinatorics
,
dp
,
math
1900
x2252
568A
Primes or Palindromes?
brute force
,
implementation
,
math
,
number theory
1600
x5119
567F
Mausoleum
dp
2400
x586
567E
President and Roads
dfs and similar
,
graphs
,
hashing
,
shortest paths
2200
x1777
567D
One-Dimensional Battle Ships
binary search
,
data structures
,
greedy
,
sortings
1700
x4821
567C
Geometric Progression
binary search
,
data structures
,
dp
1700
x9610
567B
Berland National Library
implementation
1300
x8455
567A
Lineland Mail
greedy
,
implementation
900
x32538
566G
Max and Min
geometry
2500
x336
566F
Clique in the Divisibility Graph
dp
,
math
,
number theory
1500
x3653
566E
Restoring Map
bitmasks
,
constructive algorithms
,
trees
3200
x637
566D
Restructuring Company
data structures
,
dsu
1900
x3297
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
560B
Gerald is into Art
constructive algorithms
,
implementation
1200
x7945
560A
Currency System in Geraldion
implementation
,
sortings
1000
x17222
559E
Gerald and Path
dp
,
sortings
3000
x948
559D
Randomizer
combinatorics
,
geometry
,
probabilities
2800
x441
559C
Gerald and Giant Chess
combinatorics
,
dp
,
math
,
number theory
2200
x6593
559B
Equivalent Strings
divide and conquer
,
hashing
,
sortings
,
strings
1700
x10703
559A
Gerald's Hexagon
brute force
,
geometry
,
math
1600
x10470
558E
A Simple Task
data structures
,
sortings
,
strings
2300
x6160
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