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Rayan Programming Contest
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Before contest
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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Problems
#
Name
1156D
0-1-Tree
dfs and similar
,
divide and conquer
,
dp
,
dsu
,
trees
2200
x3957
1156C
Match Points
binary search
,
greedy
,
sortings
,
ternary search
,
two pointers
2000
x6162
1156B
Ugly Pairs
dfs and similar
,
greedy
,
implementation
,
sortings
,
strings
1800
x6243
1156A
Inscribed Figures
geometry
1400
x8235
1155F
Delivery Oligopoly
brute force
,
dp
,
graphs
2800
x419
1155E
Guess the Root
brute force
,
interactive
,
math
2200
x1444
1155D
Beautiful Array
brute force
,
data structures
,
divide and conquer
,
dp
,
greedy
1900
x6966
1154G
Minimum Possible LCM
brute force
,
greedy
,
math
,
number theory
2200
x2814
1154F
Shovels Shop
dp
,
greedy
,
sortings
2100
x2872
1154E
Two Teams
data structures
,
implementation
,
sortings
1800
x6359
1154D
Walking Robot
greedy
1500
x10012
1154C
Gourmet Cat
implementation
,
math
1400
x10448
1153F
Serval and Bonus Problem
combinatorics
,
dp
,
math
,
probabilities
2600
x813
1153E
Serval and Snake
binary search
,
brute force
,
interactive
2200
x1510
1153D
Serval and Rooted Tree
binary search
,
dfs and similar
,
dp
,
greedy
,
trees
1900
x5023
1153C
Serval and Parenthesis Sequence
greedy
,
strings
1700
x7436
1152F2
Neko Rules the Catniverse (Large Version)
bitmasks
,
dp
,
matrices
3000
x676
1152F1
Neko Rules the Catniverse (Small Version)
bitmasks
,
dp
,
matrices
2800
x577
1152E
Neko and Flashback
constructive algorithms
,
dfs and similar
,
graphs
2400
x991
1152D
Neko and Aki's Prank
dp
,
greedy
,
trees
2100
x2433
1152C
Neko does Maths
brute force
,
math
,
number theory
1800
x6720
1151F
Sonya and Informatics
combinatorics
,
dp
,
matrices
,
probabilities
2300
x1247
1151E
Number of Components
combinatorics
,
data structures
,
dp
,
math
2100
x3354
1151D
Stas and the Queue at the Buffet
greedy
,
math
,
sortings
1600
x8472
1151C
Problem for Nazar
constructive algorithms
,
math
1800
x5368
1151B
Dima and a Bad XOR
bitmasks
,
brute force
,
constructive algorithms
,
dp
1600
x11326
1149E
Election Promises
games
,
graphs
3200
x532
1149D
Abandoning Roads
brute force
,
dp
,
graphs
,
greedy
3000
x792
1149C
Tree Generator™
data structures
,
implementation
,
trees
2700
x1307
1149B
Three Religions
dp
,
implementation
,
strings
2200
x1906
1148H
Holy Diver
data structures
3500
x267
1148G
Gold Experience
constructive algorithms
,
graphs
,
math
,
number theory
,
probabilities
3300
x337
1148F
Foo Fighters
bitmasks
,
constructive algorithms
2700
x1046
1148E
Earth Wind and Fire
constructive algorithms
,
greedy
,
math
,
sortings
,
two pointers
2300
x1685
1148D
Dirty Deeds Done Dirt Cheap
greedy
,
sortings
1800
x5002
1148C
Crazy Diamond
constructive algorithms
,
sortings
1700
x5320
1148B
Born This Way
binary search
,
brute force
,
two pointers
1600
x7521
1147F
Zigzag Game
games
,
interactive
3500
x265
1147E
Rainbow Coins
interactive
3000
x344
1147D
Palindrome XOR
dfs and similar
,
graphs
2400
x756
1147C
Thanos Nim
games
2000
x3293
1147B
Chladni Figure
brute force
,
strings
1900
x2891
1147A
Hide and Seek
graphs
1500
x5267
1146H
Satanic Panic
dp
,
geometry
2900
x608
1146G
Zoning Restrictions
dp
,
flows
,
graphs
2700
x844
1146F
Leaf Partition
dp
,
trees
2500
x1189
1146E
Hot is Cold
bitmasks
,
data structures
,
divide and conquer
,
implementation
2400
x919
1146D
Frog Jumping
dfs and similar
,
math
,
number theory
2100
x1110
1146C
Tree Diameter
bitmasks
,
graphs
,
interactive
1700
x3710
1144G
Two Merged Sequences
dp
,
greedy
2400
x2018
1144F
Graph Without Long Directed Paths
dfs and similar
,
graphs
1700
x11785
1144E
Median String
bitmasks
,
math
,
number theory
,
strings
1900
x4183
1144D
Equalize Them All
constructive algorithms
,
greedy
1400
x10344
1143C
Queen
dfs and similar
,
trees
1400
x12726
1142E
Pink Floyd
graphs
,
interactive
3200
x520
1142D
Foreigner
dp
2800
x519
1142C
U2
geometry
2400
x1384
1142B
Lynyrd Skynyrd
data structures
,
dfs and similar
,
dp
,
math
,
trees
2000
x3080
1142A
The Beatles
brute force
,
math
1700
x3429
1141G
Privatization of Roads in Treeland
binary search
,
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
trees
1900
x2296
1141F2
Same Sum Blocks (Hard)
data structures
,
greedy
1900
x4234
1141F1
Same Sum Blocks (Easy)
greedy
1900
x3893
1141E
Superhero Battle
math
1700
x6794
1141D
Colored Boots
greedy
,
implementation
1500
x8588
1141C
Polycarp Restores Permutation
math
1500
x11547
1140G
Double Tree
data structures
,
divide and conquer
,
shortest paths
,
trees
2700
x505
1140F
Extending Set of Points
data structures
,
divide and conquer
,
dsu
2600
x1234
1140E
Palindrome-less Arrays
combinatorics
,
divide and conquer
,
dp
2200
x1956
1140C
Playlist
brute force
,
data structures
,
sortings
1600
x9629
1139F
Dish Shopping
data structures
,
divide and conquer
2500
x439
1139E
Maximize Mex
flows
,
graph matchings
,
graphs
2400
x1842
1139D
Steps to One
dp
,
math
,
number theory
,
probabilities
2300
x2371
1139C
Edgy Trees
dfs and similar
,
dsu
,
graphs
,
math
,
trees
1500
x12774
1138B
Circus
brute force
,
greedy
,
math
,
strings
1800
x4038
1137F
Matches Are Not a Child's Play
data structures
,
trees
3400
x470
1137E
Train Car Selection
data structures
,
greedy
2700
x512
1137D
Cooperative Game
constructive algorithms
,
interactive
,
number theory
2400
x1634
1137C
Museums Tour
dp
,
graphs
,
implementation
2500
x1214
1137B
Camp Schedule
greedy
,
hashing
,
strings
1600
x6194
1137A
Skyscrapers
implementation
,
sortings
1600
x4484
1136E
Nastya Hasn't Written a Legend
binary search
,
data structures
2200
x1086
1136D
Nastya Is Buying Lunch
greedy
1800
x3832
1136C
Nastya Is Transposing Matrices
constructive algorithms
,
sortings
1500
x7734
1133F2
Spanning Tree with One Fixed Degree
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
1900
x3392
1133F1
Spanning Tree with Maximum Degree
graphs
1600
x7899
1133E
K Balanced Teams
dp
,
sortings
,
two pointers
1800
x5575
1133D
Zero Quantity Maximization
hashing
,
math
,
number theory
1500
x12183
1132G
Greedy Subsequences
data structures
,
dp
,
trees
2400
x1041
1132F
Clear the String
dp
2000
x8390
1132E
Knapsack
dfs and similar
,
dp
,
greedy
2300
x1509
1132D
Stressful Training
binary search
,
greedy
2300
x1941
1132C
Painting the Fence
brute force
1700
x5449
1131G
Most Dangerous Shark
data structures
,
dp
,
two pointers
2700
x444
1131F
Asya And Kittens
constructive algorithms
,
dsu
1700
x6711
1131E
String Multiplication
dp
,
greedy
,
strings
2300
x1154
1131D
Gourmet choice
dfs and similar
,
dp
,
dsu
,
graphs
,
greedy
2000
x3320
1131B
Draw!
greedy
,
implementation
1400
x9756
1130C
Connect
brute force
,
dfs and similar
,
dsu
1400
x8664
1129E
Legendary Tree
binary search
,
interactive
,
trees
3100
x440
1129D
Isolation
data structures
,
dp
2900
x1100
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