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Before contest
Codeforces Round 941 (Div. 1)
07:34:01
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Before contest
Codeforces Round 941 (Div. 2)
07:34:01
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data structures
dfs and similar
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Problems
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Name
1942H
Farmer John's Favorite Intern
data structures
,
dp
,
flows
,
trees
3500
x54
1909H
Parallel Swaps Sort
constructive algorithms
,
data structures
3500
x58
1776E
Crossing the Railways
data structures
,
dp
3500
x61
1889F
Doremy's Average Tree
data structures
,
dp
,
greedy
,
trees
3500
x68
1868F
LIS?
data structures
,
greedy
,
implementation
3500
x68
1750H
BinaryStringForces
constructive algorithms
,
data structures
,
dp
3500
x72
1491I
Ruler Of The Zoo
brute force
,
data structures
3500
x73
1545E1
AquaMoon and Time Stop (easy version)
data structures
,
dp
3500
x74
1870H
Standard Graph Problem
data structures
,
graphs
,
greedy
,
trees
3500
x77
1545E2
AquaMoon and Time Stop (hard version)
data structures
,
dp
3500
x79
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
x97
1081H
Palindromic Magic
data structures
,
hashing
,
strings
3500
x97
1648F
Two Avenues
data structures
,
dfs and similar
,
graphs
3500
x102
1545F
AquaMoon and Potatoes
brute force
,
data structures
,
dp
3500
x102
1740I
Arranging Crystal Balls
data structures
,
divide and conquer
,
divide and conquer
,
dp
,
geometry
,
graphs
,
number theory
3500
x104
1827F
Copium Permutation
constructive algorithms
,
data structures
,
greedy
3500
x106
799G
Cut the pie
binary search
,
data structures
,
geometry
3500
x107
1737G
Ela Takes Dancing Class
binary search
,
data structures
3500
x108
1621I
Two Sequences
data structures
,
hashing
,
string suffix structures
3500
x108
1876G
Clubstep
binary search
,
brute force
,
data structures
,
greedy
,
trees
3500
x116
1508F
Optimal Encoding
brute force
,
data structures
3500
x116
1237G
Balanced Distribution
data structures
,
dp
,
greedy
3500
x119
1824E
LuoTianyi and Cartridge
data structures
,
trees
3500
x124
1819F
Willy-nilly, Crack, Into Release!
data structures
,
dp
3500
x127
1503F
Balance the Cards
constructive algorithms
,
data structures
,
divide and conquer
,
geometry
,
graphs
,
implementation
3500
x133
1685E
The Ultimate LIS Problem
data structures
,
greedy
3500
x141
1208H
Red Blue Tree
data structures
,
implementation
,
trees
3500
x141
1608G
Alphabetic Tree
binary search
,
data structures
,
dfs and similar
,
hashing
,
string suffix structures
,
strings
,
trees
3500
x147
1423G
Growing flowers
data structures
3500
x177
1804G
Flow Control
data structures
,
dsu
,
implementation
3500
x193
1336F
Journey
data structures
,
divide and conquer
,
graphs
,
trees
3500
x194
1515H
Phoenix and Bits
bitmasks
,
brute force
,
data structures
,
sortings
3500
x211
1439E
Cheat and Win
bitmasks
,
data structures
,
games
,
trees
3500
x214
1043G
Speckled Band
data structures
,
divide and conquer
,
hashing
,
string suffix structures
,
strings
3500
x215
1830E
Bully Sort
data structures
,
math
3500
x225
1083D
The Fair Nut's getting crazy
data structures
,
implementation
3500
x225
1523H
Hopping Around the Array
data structures
,
dp
3500
x234
1148H
Holy Diver
data structures
3500
x238
1458F
Range Diameter Sum
data structures
,
trees
3500
x258
1588F
Jumping Through the Array
binary search
,
data structures
,
graphs
,
two pointers
3500
x266
1464F
My Beautiful Madness
data structures
,
trees
3500
x273
1637H
Minimize Inversions Number
data structures
,
greedy
,
math
,
sortings
3500
x300
799F
Beautiful fountains rows
data structures
3500
x417
1034D
Intervals of Intervals
binary search
,
data structures
,
two pointers
3500
x431
1707E
Replace
binary search
,
data structures
3500
x557
1580E
Railway Construction
brute force
,
constructive algorithms
,
data structures
,
graphs
,
shortest paths
3400
x64
853E
Lada Malina
data structures
,
geometry
3400
x64
1023G
Pisces
data structures
,
flows
,
trees
3400
x112
917E
Upside Down
data structures
,
string suffix structures
,
strings
,
trees
3400
x121
1844H
Multiple of Three Cycles
combinatorics
,
data structures
,
dp
,
dsu
,
math
3400
x129
1060G
Balls and Pockets
data structures
3400
x134
786D
Rap God
data structures
,
dfs and similar
,
hashing
,
strings
,
trees
3400
x136
1530H
Turing's Award
data structures
,
dp
3400
x140
1787I
Treasure Hunt
data structures
,
divide and conquer
,
two pointers
3400
x148
1852E
Rivalries
constructive algorithms
,
data structures
,
greedy
3400
x157
1764H
Doremy's Paint 2
data structures
3400
x162
741E
Arpa’s abnormal DNA and Mehrdad’s deep interest
data structures
,
string suffix structures
3400
x174
1466I
The Riddle of the Sphinx
binary search
,
data structures
,
data structures
,
interactive
3400
x180
936E
Iqea
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
shortest paths
,
trees
3400
x182
833E
Caramel Clouds
data structures
,
dp
,
sortings
3400
x210
1515I
Phoenix and Diamonds
binary search
,
data structures
,
sortings
3400
x224
1572F
Stations
data structures
3400
x236
1039E
Summer Oenothera Exhibition
data structures
3400
x263
793G
Oleg and chess
data structures
,
divide and conquer
,
flows
,
graph matchings
3400
x313
1548E
Gregor and the Two Painters
data structures
,
divide and conquer
,
graphs
,
greedy
,
math
3400
x336
1801G
A task for substrings
data structures
,
string suffix structures
,
strings
3400
x337
1693E
Outermost Maximums
data structures
,
greedy
3400
x369
1482H
Exam
data structures
,
string suffix structures
,
trees
3400
x422
1137F
Matches Are Not a Child's Play
data structures
,
trees
3400
x456
757G
Can Bash Save the Day?
data structures
,
divide and conquer
,
graphs
,
trees
3400
x478
1119F
Niyaz and Small Degrees
data structures
,
dp
,
trees
3400
x647
1491H
Yuezheng Ling and Dynamic Tree
data structures
,
trees
3400
x759
1477E
Nezzar and Tournaments
data structures
,
greedy
3300
x117
1209H
Moving Walkways
data structures
,
greedy
,
math
3300
x135
1718F
Burenka, an Array and Queries
data structures
,
math
,
number theory
3300
x145
1361F
Johnny and New Toy
data structures
,
implementation
,
math
3300
x145
1886F
Diamond Theft
data structures
,
greedy
3300
x158
1787H
Codeforces Scoreboard
binary search
,
data structures
,
dp
,
geometry
3300
x197
1870G
MEXanization
data structures
3300
x201
1740H
MEX Tree Manipulation
data structures
,
trees
3300
x201
1500E
Subset Trick
binary search
,
data structures
3300
x210
1876E
Ball-Stackable
constructive algorithms
,
data structures
,
dp
,
trees
3300
x216
1738H
Palindrome Addicts
data structures
,
strings
3300
x227
1696G
Fishingprince Plays With Array Again
brute force
,
data structures
,
geometry
,
math
3300
x265
1083F
The Fair Nut and Amusing Xor
data structures
3300
x265
704E
Iron Man
data structures
,
geometry
,
trees
3300
x272
1495F
Squares
constructive algorithms
,
data structures
,
dp
,
graphs
,
trees
3300
x280
1726G
A Certain Magical Party
combinatorics
,
data structures
,
greedy
,
sortings
3300
x282
1718D
Permutation for Burenka
data structures
,
graph matchings
,
greedy
,
math
,
trees
3300
x286
1172E
Nauuo and ODT
data structures
3300
x286
1322E
Median Mountain Range
data structures
3300
x293
1396D
Rainbow Rectangles
data structures
,
sortings
,
two pointers
3300
x295
1556G
Gates to Another World
bitmasks
,
data structures
,
dsu
,
two pointers
3300
x306
1583H
Omkar and Tours
data structures
,
divide and conquer
,
sortings
,
trees
3300
x313
983D
Arkady and Rectangles
data structures
3300
x320
1558F
Strange Sort
data structures
,
sortings
3300
x349
1408H
Rainbow Triples
binary search
,
data structures
,
flows
,
greedy
3300
x350
768G
The Winds of Winter
binary search
,
data structures
3300
x353
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