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Codeforces Round 940 (Div. 2)
3 days
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data structures
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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
1942H
Farmer John's Favorite Intern
data structures
,
dp
,
flows
,
trees
3500
x52
1909H
Parallel Swaps Sort
constructive algorithms
,
data structures
3500
x56
1776E
Crossing the Railways
data structures
,
dp
3500
x60
1889F
Doremy's Average Tree
data structures
,
dp
,
greedy
,
trees
3500
x67
1868F
LIS?
data structures
,
greedy
,
implementation
3500
x67
1750H
BinaryStringForces
constructive algorithms
,
data structures
,
dp
3500
x71
1491I
Ruler Of The Zoo
brute force
,
data structures
3500
x72
1545E1
AquaMoon and Time Stop (easy version)
data structures
,
dp
3500
x73
1870H
Standard Graph Problem
data structures
,
graphs
,
greedy
,
trees
3500
x76
1545E2
AquaMoon and Time Stop (hard version)
data structures
,
dp
3500
x78
1628F
Spaceship Crisis Management
binary search
,
data structures
,
geometry
,
sortings
3500
x84
1746G
Olympiad Training
binary search
,
data structures
,
dp
,
flows
,
geometry
,
implementation
,
sortings
3500
x88
1852F
Panda Meetups
data structures
,
dp
,
flows
3500
x95
1081H
Palindromic Magic
data structures
,
hashing
,
strings
3500
x96
1648F
Two Avenues
data structures
,
dfs and similar
,
graphs
3500
x101
1545F
AquaMoon and Potatoes
brute force
,
data structures
,
dp
3500
x101
1740I
Arranging Crystal Balls
data structures
,
divide and conquer
,
divide and conquer
,
dp
,
geometry
,
graphs
,
number theory
3500
x103
1827F
Copium Permutation
constructive algorithms
,
data structures
,
greedy
3500
x104
799G
Cut the pie
binary search
,
data structures
,
geometry
3500
x106
1737G
Ela Takes Dancing Class
binary search
,
data structures
3500
x107
1621I
Two Sequences
data structures
,
hashing
,
string suffix structures
3500
x107
1876G
Clubstep
binary search
,
brute force
,
data structures
,
greedy
,
trees
3500
x114
1508F
Optimal Encoding
brute force
,
data structures
3500
x115
1237G
Balanced Distribution
data structures
,
dp
,
greedy
3500
x116
1824E
LuoTianyi and Cartridge
data structures
,
trees
3500
x123
1819F
Willy-nilly, Crack, Into Release!
data structures
,
dp
3500
x125
1503F
Balance the Cards
constructive algorithms
,
data structures
,
divide and conquer
,
geometry
,
graphs
,
implementation
3500
x125
1685E
The Ultimate LIS Problem
data structures
,
greedy
3500
x134
1208H
Red Blue Tree
data structures
,
implementation
,
trees
3500
x140
1608G
Alphabetic Tree
binary search
,
data structures
,
dfs and similar
,
hashing
,
string suffix structures
,
strings
,
trees
3500
x146
1423G
Growing flowers
data structures
3500
x172
1804G
Flow Control
data structures
,
dsu
,
implementation
3500
x191
1336F
Journey
data structures
,
divide and conquer
,
graphs
,
trees
3500
x193
1515H
Phoenix and Bits
bitmasks
,
brute force
,
data structures
,
sortings
3500
x204
1439E
Cheat and Win
bitmasks
,
data structures
,
games
,
trees
3500
x213
1043G
Speckled Band
data structures
,
divide and conquer
,
hashing
,
string suffix structures
,
strings
3500
x214
1830E
Bully Sort
data structures
,
math
3500
x223
1083D
The Fair Nut's getting crazy
data structures
,
implementation
3500
x223
1523H
Hopping Around the Array
data structures
,
dp
3500
x233
1148H
Holy Diver
data structures
3500
x236
1458F
Range Diameter Sum
data structures
,
trees
3500
x257
1588F
Jumping Through the Array
binary search
,
data structures
,
graphs
,
two pointers
3500
x266
1464F
My Beautiful Madness
data structures
,
trees
3500
x270
1637H
Minimize Inversions Number
data structures
,
greedy
,
math
,
sortings
3500
x299
799F
Beautiful fountains rows
data structures
3500
x416
1034D
Intervals of Intervals
binary search
,
data structures
,
two pointers
3500
x429
1707E
Replace
binary search
,
data structures
3500
x554
1580E
Railway Construction
brute force
,
constructive algorithms
,
data structures
,
graphs
,
shortest paths
3400
x63
853E
Lada Malina
data structures
,
geometry
3400
x63
1023G
Pisces
data structures
,
flows
,
trees
3400
x111
917E
Upside Down
data structures
,
string suffix structures
,
strings
,
trees
3400
x119
1844H
Multiple of Three Cycles
combinatorics
,
data structures
,
dp
,
dsu
,
math
3400
x126
1060G
Balls and Pockets
data structures
3400
x131
786D
Rap God
data structures
,
dfs and similar
,
hashing
,
strings
,
trees
3400
x133
1530H
Turing's Award
data structures
,
dp
3400
x139
1787I
Treasure Hunt
data structures
,
divide and conquer
,
two pointers
3400
x146
1852E
Rivalries
constructive algorithms
,
data structures
,
greedy
3400
x155
1764H
Doremy's Paint 2
data structures
3400
x160
741E
Arpa’s abnormal DNA and Mehrdad’s deep interest
data structures
,
string suffix structures
3400
x169
1466I
The Riddle of the Sphinx
binary search
,
data structures
,
data structures
,
interactive
3400
x176
936E
Iqea
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
shortest paths
,
trees
3400
x181
833E
Caramel Clouds
data structures
,
dp
,
sortings
3400
x209
1515I
Phoenix and Diamonds
binary search
,
data structures
,
sortings
3400
x222
1572F
Stations
data structures
3400
x235
1039E
Summer Oenothera Exhibition
data structures
3400
x262
793G
Oleg and chess
data structures
,
divide and conquer
,
flows
,
graph matchings
3400
x311
1801G
A task for substrings
data structures
,
string suffix structures
,
strings
3400
x326
1548E
Gregor and the Two Painters
data structures
,
divide and conquer
,
graphs
,
greedy
,
math
3400
x333
1693E
Outermost Maximums
data structures
,
greedy
3400
x368
1482H
Exam
data structures
,
string suffix structures
,
trees
3400
x420
1137F
Matches Are Not a Child's Play
data structures
,
trees
3400
x427
757G
Can Bash Save the Day?
data structures
,
divide and conquer
,
graphs
,
trees
3400
x476
1119F
Niyaz and Small Degrees
data structures
,
dp
,
trees
3400
x645
1491H
Yuezheng Ling and Dynamic Tree
data structures
,
trees
3400
x756
1477E
Nezzar and Tournaments
data structures
,
greedy
3300
x116
1209H
Moving Walkways
data structures
,
greedy
,
math
3300
x133
1361F
Johnny and New Toy
data structures
,
implementation
,
math
3300
x140
1718F
Burenka, an Array and Queries
data structures
,
math
,
number theory
3300
x143
1886F
Diamond Theft
data structures
,
greedy
3300
x157
1787H
Codeforces Scoreboard
binary search
,
data structures
,
dp
,
geometry
3300
x195
1740H
MEX Tree Manipulation
data structures
,
trees
3300
x198
1870G
MEXanization
data structures
3300
x199
1500E
Subset Trick
binary search
,
data structures
3300
x209
1876E
Ball-Stackable
constructive algorithms
,
data structures
,
dp
,
trees
3300
x212
1738H
Palindrome Addicts
data structures
,
strings
3300
x226
1696G
Fishingprince Plays With Array Again
brute force
,
data structures
,
geometry
,
math
3300
x263
1083F
The Fair Nut and Amusing Xor
data structures
3300
x264
704E
Iron Man
data structures
,
geometry
,
trees
3300
x271
1495F
Squares
constructive algorithms
,
data structures
,
dp
,
graphs
,
trees
3300
x273
1726G
A Certain Magical Party
combinatorics
,
data structures
,
greedy
,
sortings
3300
x278
1718D
Permutation for Burenka
data structures
,
graph matchings
,
greedy
,
math
,
trees
3300
x284
1172E
Nauuo and ODT
data structures
3300
x284
1322E
Median Mountain Range
data structures
3300
x292
1396D
Rainbow Rectangles
data structures
,
sortings
,
two pointers
3300
x294
1556G
Gates to Another World
bitmasks
,
data structures
,
dsu
,
two pointers
3300
x301
1583H
Omkar and Tours
data structures
,
divide and conquer
,
sortings
,
trees
3300
x312
983D
Arkady and Rectangles
data structures
3300
x319
1408H
Rainbow Triples
binary search
,
data structures
,
flows
,
greedy
3300
x347
1558F
Strange Sort
data structures
,
sortings
3300
x348
768G
The Winds of Winter
binary search
,
data structures
3300
x352
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