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2023 Post World Finals Online ICPC Challenge powered by Huawei
2 weeks
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Kotlin Heroes: Practice 10
21:16:47
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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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Problems
#
Name
1516C
Baby Ehab Partitions Again
bitmasks
,
constructive algorithms
,
dp
,
math
1700
x11517
1512G
Short Task
brute force
,
dp
,
math
,
number theory
1700
x7796
1503B
3-Coloring
constructive algorithms
,
games
,
interactive
1700
x6836
1497E1
Square-Free Division (easy version)
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
1700
x8028
1491C
Pekora and Trampoline
brute force
,
data structures
,
dp
,
greedy
,
implementation
1700
x7713
1485C
Floor and Mod
binary search
,
brute force
,
math
,
number theory
1700
x9515
1479A
Searching Local Minimum
binary search
,
interactive
,
ternary search
1700
x11109
1478C
Nezzar and Symmetric Array
implementation
,
math
,
sortings
1700
x9487
1476D
Journey
dfs and similar
,
dp
,
dsu
,
implementation
1700
x8382
1474C
Array Destruction
brute force
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
1700
x12188
1473D
Program
data structures
,
dp
,
implementation
,
strings
1700
x9313
1472E
Correct Placement
binary search
,
data structures
,
dp
,
sortings
,
two pointers
1700
x7717
1469D
Ceil Divisions
brute force
,
constructive algorithms
,
math
,
number theory
1700
x9147
1468F
Full Turn
geometry
,
hashing
,
number theory
1700
x3587
1468D
Firecrackers
binary search
,
sortings
1700
x4458
1467B
Hills And Valleys
brute force
,
implementation
1700
x10705
1462E2
Close Tuples (hard version)
binary search
,
combinatorics
,
implementation
,
math
,
sortings
,
two pointers
1700
x9212
1453C
Triangles
greedy
,
implementation
1700
x5973
1451D
Circle Game
games
,
geometry
,
math
1700
x9258
1430D
String Deletion
binary search
,
data structures
,
greedy
,
two pointers
1700
x8665
1422C
Bargain
combinatorics
,
dp
,
math
1700
x8072
1413D
Shurikens
data structures
,
greedy
,
implementation
1700
x6332
1411C
Peaceful Rooks
dfs and similar
,
dsu
,
graphs
1700
x7764
1406C
Link Cut Centroids
constructive algorithms
,
dfs and similar
,
graphs
,
trees
1700
x9806
1400B
RPG Protagonist
brute force
,
greedy
,
math
1700
x10830
1393C
Pinkie Pie Eats Patty-cakes
constructive algorithms
,
greedy
,
math
,
sortings
1700
x10255
1392D
Omkar and Bed Wars
dp
,
greedy
1700
x8439
1383A
String Transformation 1
dsu
,
graphs
,
greedy
,
sortings
,
strings
,
trees
,
two pointers
1700
x10230
1381A2
Prefix Flip (Hard Version)
constructive algorithms
,
data structures
,
implementation
,
strings
,
two pointers
1700
x12748
1368D
AND, OR and square sum
bitmasks
,
greedy
,
math
1700
x11210
1365D
Solve The Maze
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
shortest paths
1700
x16138
1361A
Johnny and Contribution
constructive algorithms
,
graphs
,
greedy
,
sortings
1700
x8149
1360F
Spy-string
bitmasks
,
brute force
,
constructive algorithms
,
dp
,
hashing
,
strings
1700
x11849
1359C
Mixing Water
binary search
,
math
1700
x13254
1346E
Magic Tricks
*special problem
,
dp
,
graphs
1700
x368
1343D
Constant Palindrome Sum
brute force
,
data structures
,
greedy
,
two pointers
1700
x12199
1340B
Nastya and Scoreboard
bitmasks
,
dp
,
graphs
,
greedy
1700
x7569
1336B
Xenia and Colorful Gems
binary search
,
greedy
,
math
,
sortings
,
two pointers
1700
x10977
1335E1
Three Blocks Palindrome (easy version)
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x10418
1333C
Eugene and an array
binary search
,
data structures
,
implementation
,
two pointers
1700
x12127
1332D
Walk on Matrix
bitmasks
,
constructive algorithms
,
math
1700
x7834
1329B
Dreamoon Likes Sequences
bitmasks
,
combinatorics
,
math
1700
x6358
1325D
Ehab the Xorcist
bitmasks
,
constructive algorithms
,
greedy
,
number theory
1700
x11575
1324E
Sleeping Schedule
dp
,
implementation
1700
x12570
1320B
Navigation System
dfs and similar
,
graphs
,
shortest paths
1700
x5801
1313B
Different Rules
constructive algorithms
,
greedy
,
implementation
,
math
1700
x6458
1312D
Count the Arrays
combinatorics
,
math
1700
x8950
1310A
Recommendations
data structures
,
greedy
,
sortings
1700
x4970
1301C
Ayoub's function
binary search
,
combinatorics
,
greedy
,
math
,
strings
1700
x9057
1295B
Infinite Prefixes
math
,
strings
1700
x9069
1292B
Aroma's Search
brute force
,
constructive algorithms
,
geometry
,
greedy
,
implementation
1700
x6022
1280A
Cut and Paste
implementation
,
math
1700
x5155
1279D
Santa's Bot
combinatorics
,
math
,
probabilities
1700
x5905
1278C
Berry Jam
data structures
,
dp
,
greedy
,
implementation
1700
x7601
1268A
Long Beautiful Integer
constructive algorithms
,
greedy
,
implementation
,
strings
1700
x8287
1267E
Elections
greedy
1700
x2989
1260C
Infinite Fence
greedy
,
math
,
number theory
1700
x7868
1257D
Yet Another Monster Killing Problem
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
1700
x7202
1256C
Platforms Jumping
greedy
1700
x6643
1254A
Feeding Chicken
constructive algorithms
,
greedy
,
implementation
1700
x4987
1253D
Harmonious Graph
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
1700
x8836
1249E
By Elevator or Stairs?
dp
,
shortest paths
1700
x9218
1239A
Ivan the Fool and the Probability Theory
combinatorics
,
dp
,
math
1700
x7084
1237C1
Balanced Removals (Easier)
constructive algorithms
,
geometry
,
greedy
1700
x5861
1228C
Primes and Multiplication
math
,
number theory
1700
x8690
1227C
Messy
constructive algorithms
1700
x5321
1219C
Periodic integer number
implementation
,
strings
1700
x1754
1217C
The Number Of Good Substrings
binary search
,
bitmasks
,
brute force
1700
x7089
1216C
White Sheet
geometry
,
math
1700
x8766
1215D
Ticket Game
games
,
greedy
,
math
1700
x5969
1211C
Ice Cream
*special problem
,
greedy
,
sortings
1700
x476
1210B
Marcin and Training Camp
brute force
,
greedy
1700
x5664
1210A
Anadi and Domino
brute force
,
graphs
1700
x5118
1209D
Cow and Snacks
dfs and similar
,
dsu
,
graphs
1700
x8807
1204C
Anna, Svyatoslav and Maps
dp
,
graphs
,
greedy
,
shortest paths
1700
x6437
1203D2
Remove the Substring (hard version)
binary search
,
greedy
,
implementation
,
two pointers
1700
x7026
1202B
You Are Given a Decimal String...
brute force
,
dp
,
shortest paths
1700
x4409
1194D
1-2-K Game
games
,
math
1700
x6218
1185D
Extra Element
implementation
,
math
1700
x6426
1185C2
Exam in BerSU (hard version)
brute force
,
data structures
,
greedy
,
math
1700
x7143
1182C
Beautiful Lyrics
data structures
,
greedy
,
strings
1700
x4380
1176E
Cover it!
dfs and similar
,
dsu
,
graphs
,
shortest paths
,
trees
1700
x10427
1168A
Increasing by Modulo
binary search
,
greedy
1700
x6491
1157E
Minimum Array
binary search
,
data structures
,
greedy
1700
x8142
1157C2
Increasing Subsequence (hard version)
greedy
1700
x7759
1153C
Serval and Parenthesis Sequence
greedy
,
strings
1700
x7263
1148C
Crazy Diamond
constructive algorithms
,
sortings
1700
x5108
1146C
Tree Diameter
bitmasks
,
graphs
,
interactive
1700
x3522
1144F
Graph Without Long Directed Paths
dfs and similar
,
graphs
1700
x10769
1142A
The Beatles
brute force
,
math
1700
x3392
1141E
Superhero Battle
math
1700
x6592
1132C
Painting the Fence
brute force
1700
x5280
1131F
Asya And Kittens
constructive algorithms
,
dsu
1700
x6380
1129A1
Toy Train (Simplified)
brute force
,
greedy
1700
x3760
1118E
Yet Another Ball Problem
constructive algorithms
,
implementation
1700
x4037
1118D2
Coffee and Coursework (Hard Version)
binary search
,
greedy
1700
x6040
1118D1
Coffee and Coursework (Easy version)
brute force
,
greedy
1700
x5506
1118C
Palindromic Matrix
constructive algorithms
,
implementation
1700
x5647
1115U3
Block unitary
*special problem
1700
x195
1114C
Trailing Loves (or L'oeufs?)
brute force
,
implementation
,
math
,
number theory
1700
x7249
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