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Codeforces Round 953 (Div. 2)
00:32:46
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data structures
combine-tags-by-or
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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
1981F
Turtle and Paths on a Tree
data structures
,
dp
,
trees
3000
x157
1976F
Remove Bridges
data structures
,
dfs and similar
,
dp
,
greedy
,
sortings
,
trees
2800
x374
1967F
Next and Prev
brute force
,
data structures
,
implementation
3200
x46
1965F
Conference
data structures
,
flows
3300
x118
1957F2
Frequency Mismatch (Hard Version)
binary search
,
data structures
,
dfs and similar
,
hashing
,
probabilities
,
trees
2700
x320
1956F
Nene and the Passing Game
constructive algorithms
,
data structures
,
dsu
,
graphs
,
sortings
3000
x296
1942H
Farmer John's Favorite Intern
data structures
,
dp
,
flows
,
trees
3500
x72
1942F
Farmer John's Favorite Function
brute force
,
data structures
,
implementation
,
math
2700
x603
1936D
Bitwise Paradox
binary search
,
bitmasks
,
data structures
,
greedy
,
two pointers
3100
x442
1935F
Andrey's Tree
binary search
,
constructive algorithms
,
data structures
,
dfs and similar
,
dsu
,
greedy
,
implementation
,
trees
2800
x405
1930G
Prefix Max Set Counting
data structures
,
dp
,
trees
3100
x306
1928F
Digital Patterns
combinatorics
,
data structures
,
implementation
,
math
2900
x219
1920F2
Smooth Sailing (Hard Version)
binary search
,
data structures
,
dsu
,
geometry
,
graphs
,
trees
3000
x423
1919F2
Wine Factory (Hard Version)
data structures
,
dp
,
flows
,
greedy
,
matrices
2800
x757
1913F
Palindromic Problem
binary search
,
data structures
,
hashing
,
string suffix structures
,
strings
2800
x293
1909H
Parallel Swaps Sort
constructive algorithms
,
data structures
3500
x63
1904F
Beautiful Tree
data structures
,
dfs and similar
,
graphs
,
implementation
,
trees
2800
x314
1900F
Local Deletions
binary search
,
data structures
,
implementation
2800
x266
1895G
Two Characters, Two Colors
binary search
,
data structures
,
dp
,
flows
,
greedy
3100
x179
1889F
Doremy's Average Tree
data structures
,
dp
,
greedy
,
trees
3500
x70
1887D
Split
binary search
,
data structures
,
divide and conquer
,
dsu
,
math
,
trees
,
two pointers
2700
x832
1886F
Diamond Theft
data structures
,
greedy
3300
x161
1879F
Last Man Standing
brute force
,
data structures
,
number theory
2800
x477
1876G
Clubstep
binary search
,
brute force
,
data structures
,
greedy
,
trees
3500
x118
1876E
Ball-Stackable
constructive algorithms
,
data structures
,
dp
,
trees
3300
x258
1870H
Standard Graph Problem
data structures
,
graphs
,
greedy
,
trees
3500
x79
1870G
MEXanization
data structures
3300
x204
1868F
LIS?
data structures
,
greedy
,
implementation
3500
x70
1866F
Freak Joker Process
binary search
,
data structures
,
sortings
3100
x122
1860F
Evaluate RBS
data structures
,
geometry
,
implementation
,
math
,
sortings
2900
x266
1859F
Teleportation in Byteland
data structures
,
dfs and similar
,
divide and conquer
,
graphs
,
shortest paths
,
trees
3200
x374
1852F
Panda Meetups
data structures
,
dp
,
flows
3500
x102
1852E
Rivalries
constructive algorithms
,
data structures
,
greedy
3400
x162
1849F
XOR Partition
binary search
,
bitmasks
,
data structures
,
divide and conquer
,
greedy
,
trees
2700
x668
1844H
Multiple of Three Cycles
combinatorics
,
data structures
,
dp
,
dsu
,
math
3400
x133
1844G
Tree Weights
bitmasks
,
constructive algorithms
,
data structures
,
dfs and similar
,
implementation
,
math
,
matrices
,
number theory
,
trees
3000
x661
1844F2
Min Cost Permutation (Hard Version)
binary search
,
constructive algorithms
,
data structures
,
greedy
,
math
,
sortings
2800
x372
1830F
The Third Grace
data structures
,
dp
3200
x231
1830E
Bully Sort
data structures
,
math
3500
x234
1827F
Copium Permutation
constructive algorithms
,
data structures
,
greedy
3500
x111
1827D
Two Centroids
data structures
,
dfs and similar
,
greedy
,
trees
2800
x712
1824E
LuoTianyi and Cartridge
data structures
,
trees
3500
x127
1824D
LuoTianyi and the Function
data structures
3000
x465
1819F
Willy-nilly, Crack, Into Release!
data structures
,
dp
3500
x128
1819D
Misha and Apples
brute force
,
data structures
,
dp
,
two pointers
2800
x604
1810F
M-tree
data structures
,
math
,
sortings
,
trees
2800
x549
1804G
Flow Control
data structures
,
dsu
,
implementation
3500
x194
1801G
A task for substrings
data structures
,
string suffix structures
,
strings
3400
x354
1801E
Gasoline prices
data structures
,
divide and conquer
,
dsu
,
hashing
,
trees
3000
x435
1797F
Li Hua and Path
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
trees
3000
x336
1787I
Treasure Hunt
data structures
,
divide and conquer
,
two pointers
3400
x149
1787H
Codeforces Scoreboard
binary search
,
data structures
,
dp
,
geometry
3300
x203
1787G
Colorful Tree Again
brute force
,
data structures
,
trees
3000
x401
1783G
Weighed Tree Radius
data structures
,
divide and conquer
,
implementation
,
trees
2800
x421
1776E
Crossing the Railways
data structures
,
dp
3500
x63
1774G
Segment Covering
brute force
,
combinatorics
,
constructive algorithms
,
data structures
,
dp
,
trees
3200
x395
1774F2
Magician and Pigs (Hard Version)
binary search
,
brute force
,
data structures
,
implementation
2700
x645
1767F
Two Subtrees
data structures
,
trees
3100
x255
1764H
Doremy's Paint 2
data structures
3400
x171
1763F
Edge Queries
data structures
,
dfs and similar
,
dp
,
dsu
,
graphs
,
trees
3000
x426
1758F
Decent Division
constructive algorithms
,
data structures
3000
x161
1750H
BinaryStringForces
constructive algorithms
,
data structures
,
dp
3500
x74
1749F
Distance to the Path
data structures
,
dfs and similar
,
trees
2800
x482
1746G
Olympiad Training
binary search
,
data structures
,
dp
,
flows
,
geometry
,
implementation
,
sortings
3500
x90
1746F
Kazaee
data structures
,
hashing
,
probabilities
2800
x1587
1743G
Antifibonacci Cut
bitmasks
,
combinatorics
,
constructive algorithms
,
data structures
,
dp
,
hashing
,
math
3000
x248
1740I
Arranging Crystal Balls
data structures
,
divide and conquer
,
divide and conquer
,
dp
,
geometry
,
graphs
,
number theory
3500
x106
1740H
MEX Tree Manipulation
data structures
,
trees
3300
x205
1738H
Palindrome Addicts
data structures
,
strings
3300
x232
1737G
Ela Takes Dancing Class
binary search
,
data structures
3500
x110
1735F
Pebbles and Beads
data structures
,
geometry
2900
x219
1732E
Location
data structures
,
dp
,
math
,
number theory
2800
x419
1730F
Almost Sorted
bitmasks
,
data structures
,
dp
2700
x420
1730E
Maximums and Minimums
combinatorics
,
data structures
,
divide and conquer
,
number theory
2700
x617
1726G
A Certain Magical Party
combinatorics
,
data structures
,
greedy
,
sortings
3300
x287
1726F
Late For Work (submissions are not allowed)
data structures
,
greedy
,
schedules
,
shortest paths
2900
x131
1720E
Misha and Paintings
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
2700
x748
1718F
Burenka, an Array and Queries
data structures
,
math
,
number theory
3300
x146
1718D
Permutation for Burenka
data structures
,
graph matchings
,
greedy
,
math
,
trees
3300
x291
1712F
Triameter
binary search
,
data structures
,
dfs and similar
,
trees
3200
x307
1707E
Replace
binary search
,
data structures
3500
x569
1696G
Fishingprince Plays With Array Again
brute force
,
data structures
,
geometry
,
math
3300
x268
1693E
Outermost Maximums
data structures
,
greedy
3400
x395
1693D
Decinc Dividing
brute force
,
data structures
,
divide and conquer
,
dp
,
greedy
2800
x785
1687D
Cute number
binary search
,
brute force
,
data structures
,
dsu
,
implementation
,
math
2900
x560
1685E
The Ultimate LIS Problem
data structures
,
greedy
3500
x143
1682F
MCMF?
data structures
,
flows
,
graphs
,
greedy
,
sortings
,
two pointers
2700
x299
1677E
Tokitsukaze and Beautiful Subsegments
data structures
2900
x520
1672I
PermutationForces
data structures
,
greedy
3000
x159
1672H
Zigu Zagu
constructive algorithms
,
data structures
,
greedy
2700
x918
1656H
Equal LCM Subsets
data structures
,
math
,
number theory
3200
x421
1654G
Snowy Mountain
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
,
trees
2900
x358
1654F
Minimal String Xoration
bitmasks
,
data structures
,
divide and conquer
,
greedy
,
hashing
,
sortings
,
strings
2800
x1064
1651F
Tower Defense
binary search
,
brute force
,
data structures
3000
x364
1648F
Two Avenues
data structures
,
dfs and similar
,
graphs
3500
x105
1648E
Air Reform
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
graphs
,
implementation
,
trees
3200
x387
1648D
Serious Business
data structures
,
divide and conquer
,
dp
,
implementation
,
shortest paths
2800
x812
1638F
Two Posters
brute force
,
data structures
,
greedy
,
two pointers
3200
x199
1637H
Minimize Inversions Number
data structures
,
greedy
,
math
,
sortings
3500
x304
1635F
Closest Pair
data structures
,
greedy
2800
x986
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