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Kotlin Heroes: Episode 10
01:39:53
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dfs and similar
combine-tags-by-or
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2-sat
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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
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probabilities
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#
Name
780C
Andryusha and Colored Balloons
dfs and similar
,
graphs
,
greedy
,
trees
1600
x8854
1328E
Tree Queries
dfs and similar
,
graphs
,
trees
1900
x8852
1253D
Harmonious Graph
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
1700
x8844
1209D
Cow and Snacks
dfs and similar
,
dsu
,
graphs
1700
x8823
1152B
Neko Performs Cat Furrier Transform
bitmasks
,
constructive algorithms
,
dfs and similar
,
math
1300
x8813
500B
New Year Permutation
dfs and similar
,
dsu
,
graphs
,
greedy
,
math
,
sortings
1600
x8706
219D
Choosing Capital for Treeland
dfs and similar
,
dp
,
graphs
,
trees
1700
x8614
103B
Cthulhu
dfs and similar
,
dsu
,
graphs
1500
x8533
1093D
Beautiful Graph
dfs and similar
,
graphs
1700
x8482
1476D
Journey
dfs and similar
,
dp
,
dsu
,
implementation
1700
x8392
1098A
Sum in the tree
constructive algorithms
,
dfs and similar
,
greedy
,
trees
1600
x8362
1130C
Connect
brute force
,
dfs and similar
,
dsu
1400
x8328
475B
Strongly Connected City
brute force
,
dfs and similar
,
graphs
,
implementation
1400
x8240
339C
Xenia and Weights
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
greedy
,
shortest paths
1700
x8136
1338B
Edge Weight Assignment
bitmasks
,
constructive algorithms
,
dfs and similar
,
greedy
,
math
,
trees
1800
x8091
1693B
Fake Plastic Trees
dfs and similar
,
dp
,
greedy
,
trees
1700
x8069
242C
King's Path
dfs and similar
,
graphs
,
hashing
,
shortest paths
1800
x8052
744A
Hongcow Builds A Nation
dfs and similar
,
graphs
1500
x7911
932B
Recursive Queries
binary search
,
data structures
,
dfs and similar
1300
x7796
1411C
Peaceful Rooks
dfs and similar
,
dsu
,
graphs
1700
x7773
1592C
Bakry and Partitioning
bitmasks
,
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
trees
1700
x7618
574B
Bear and Three Musketeers
brute force
,
dfs and similar
,
graphs
,
hashing
1500
x7608
1850H
The Third Letter
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
1700
x7520
1535D
Playoff Tournament
data structures
,
dfs and similar
,
dp
,
implementation
,
trees
1800
x7490
1187E
Tree Painting
dfs and similar
,
dp
,
trees
2100
x7470
1285D
Dr. Evil Underscores
bitmasks
,
brute force
,
dfs and similar
,
divide and conquer
,
dp
,
greedy
,
strings
,
trees
1900
x7342
659E
New Reform
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
1600
x7324
1092F
Tree with Maximum Cost
dfs and similar
,
dp
,
trees
1900
x7202
1714G
Path Prefixes
binary search
,
data structures
,
dfs and similar
,
trees
1700
x7138
939D
Love Rescue
dfs and similar
,
dsu
,
graphs
,
greedy
,
strings
1600
x7138
1594D
The Number of Imposters
constructive algorithms
,
dfs and similar
,
dp
,
dsu
,
graphs
1700
x7107
320B
Ping-Pong (Easy Version)
dfs and similar
,
graphs
1500
x7094
1404B
Tree Tag
dfs and similar
,
dp
,
games
,
trees
1900
x7086
540C
Ice Cave
dfs and similar
2000
x7019
1027D
Mouse Hunt
dfs and similar
,
graphs
1700
x7003
682C
Alyona and the Tree
dfs and similar
,
dp
,
graphs
,
trees
1600
x7002
1242B
0-1 MST
dfs and similar
,
dsu
,
graphs
,
sortings
1900
x6981
609E
Minimum spanning tree for each edge
data structures
,
dfs and similar
,
dsu
,
graphs
,
trees
2100
x6957
1931F
Chat Screenshots
combinatorics
,
dfs and similar
,
graphs
1700
x6953
1611E1
Escape The Maze (easy version)
dfs and similar
,
greedy
,
shortest paths
,
trees
,
two pointers
1700
x6953
1760G
SlavicG's Favorite Problem
bitmasks
,
dfs and similar
,
graphs
1700
x6897
1385E
Directing Edges
constructive algorithms
,
dfs and similar
,
graphs
2000
x6824
723D
Lakes in Berland
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
1600
x6815
930A
Peculiar apple-tree
dfs and similar
,
graphs
,
trees
1500
x6797
321C
Ciel the Commander
constructive algorithms
,
dfs and similar
,
divide and conquer
,
greedy
,
trees
2100
x6796
731C
Socks
dfs and similar
,
dsu
,
graphs
,
greedy
1600
x6792
191C
Fools and Roads
data structures
,
dfs and similar
,
trees
1900
x6740
1621C
Hidden Permutations
dfs and similar
,
interactive
,
math
1700
x6725
1768D
Lucky Permutation
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
1800
x6707
1552D
Array Differentiation
bitmasks
,
brute force
,
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
math
1800
x6697
570D
Tree Requests
binary search
,
bitmasks
,
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2200
x6685
1873H
Mad City
dfs and similar
,
dsu
,
games
,
graphs
,
shortest paths
,
trees
1700
x6608
1722F
L-shapes
dfs and similar
,
implementation
1700
x6553
489D
Unbearable Controversy of Being
brute force
,
combinatorics
,
dfs and similar
,
graphs
1700
x6545
1363E
Tree Shuffling
dfs and similar
,
dp
,
greedy
,
trees
2000
x6486
1608C
Game Master
data structures
,
dfs and similar
,
dp
,
graphs
,
greedy
,
two pointers
1700
x6420
999E
Reachability from the Capital
dfs and similar
,
graphs
,
greedy
2000
x6366
1721D
Maximum AND
bitmasks
,
dfs and similar
,
divide and conquer
,
greedy
,
sortings
1800
x6311
954D
Fight Against Traffic
dfs and similar
,
graphs
,
shortest paths
1600
x6307
35C
Fire Again
brute force
,
dfs and similar
,
shortest paths
1500
x6272
61D
Eternal Victory
dfs and similar
,
graphs
,
greedy
,
shortest paths
,
trees
1800
x6249
375D
Tree and Queries
data structures
,
dfs and similar
,
trees
2400
x6212
519E
A and B and Lecture Rooms
binary search
,
data structures
,
dfs and similar
,
dp
,
trees
2100
x6206
165E
Compatible Numbers
bitmasks
,
brute force
,
dfs and similar
,
dp
2200
x6203
1156B
Ugly Pairs
dfs and similar
,
greedy
,
implementation
,
sortings
,
strings
1800
x6130
1388D
Captain Flint and Treasure
data structures
,
dfs and similar
,
graphs
,
greedy
,
implementation
,
trees
2000
x6123
329B
Biridian Forest
dfs and similar
,
shortest paths
1500
x6116
300B
Coach
brute force
,
dfs and similar
,
graphs
1500
x6111
383C
Propagating tree
data structures
,
dfs and similar
,
trees
2000
x6110
208E
Blood Cousins
binary search
,
data structures
,
dfs and similar
,
trees
2100
x6101
216B
Forming Teams
dfs and similar
,
implementation
1700
x6100
505C
Mr. Kitayuta, the Treasure Hunter
dfs and similar
,
dp
,
two pointers
1900
x6087
979C
Kuro and Walking Route
dfs and similar
,
trees
1600
x6083
1805D
A Wide, Wide Graph
dfs and similar
,
dp
,
graphs
,
greedy
,
trees
1800
x6053
1307D
Cow and Fields
binary search
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
,
sortings
1900
x6030
1881F
Minimum Maximum Distance
dfs and similar
,
dp
,
graphs
,
shortest paths
,
trees
1700
x6011
118E
Bertown roads
dfs and similar
,
graphs
2000
x5996
463D
Gargari and Permutations
dfs and similar
,
dp
,
graphs
,
implementation
1900
x5919
1560F1
Nearest Beautiful Number (easy version)
binary search
,
bitmasks
,
brute force
,
constructive algorithms
,
dfs and similar
,
greedy
1900
x5916
1807F
Bouncy Ball
brute force
,
dfs and similar
,
implementation
1700
x5891
1272E
Nearest Opposite Parity
dfs and similar
,
graphs
,
shortest paths
1900
x5857
1436D
Bandit in a City
binary search
,
dfs and similar
,
graphs
,
greedy
,
trees
1900
x5847
768B
Code For 1
constructive algorithms
,
dfs and similar
,
divide and conquer
1600
x5845
337D
Book of Evil
dfs and similar
,
divide and conquer
,
dp
,
trees
2000
x5828
1872F
Selling a Menagerie
dfs and similar
,
dsu
,
graphs
,
implementation
,
math
1800
x5814
920E
Connected Components?
data structures
,
dfs and similar
,
dsu
,
graphs
2100
x5811
1320B
Navigation System
dfs and similar
,
graphs
,
shortest paths
1700
x5806
1344B
Monopole Magnets
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
2000
x5774
1775D
Friendly Spiders
dfs and similar
,
graphs
,
math
,
number theory
,
shortest paths
1800
x5773
1057A
Bmail Computer Network
*special problem
,
dfs and similar
,
trees
900
x5766
1118F1
Tree Cutting (Easy Version)
dfs and similar
,
trees
1800
x5691
1399E1
Weights Division (easy version)
data structures
,
dfs and similar
,
greedy
,
trees
2000
x5686
455B
A Lot of Games
dfs and similar
,
dp
,
games
,
implementation
,
strings
,
trees
1900
x5664
813C
The Tag Game
dfs and similar
,
graphs
1700
x5657
1056D
Decorate Apple Tree
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
greedy
,
sortings
,
trees
1600
x5635
698B
Fix a Tree
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
trees
1700
x5609
689B
Mike and Shortcuts
dfs and similar
,
graphs
,
greedy
,
shortest paths
1600
x5604
1822F
Gardening Friends
brute force
,
dfs and similar
,
dp
,
graphs
,
trees
1700
x5580
843A
Sorting by Subsequences
dfs and similar
,
dsu
,
implementation
,
math
,
sortings
1400
x5558
1624G
MinOr Tree
bitmasks
,
dfs and similar
,
dsu
,
graphs
,
greedy
1900
x5549
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