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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
24:17:05
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graphs
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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Custom test
Problems
#
Name
1253D
Harmonious Graph
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
1700
x8758
1209D
Cow and Snacks
dfs and similar
,
dsu
,
graphs
1700
x8725
1328E
Tree Queries
dfs and similar
,
graphs
,
trees
1900
x8672
500B
New Year Permutation
dfs and similar
,
dsu
,
graphs
,
greedy
,
math
,
sortings
1600
x8646
344B
Simple Molecules
brute force
,
graphs
,
math
1200
x8609
103B
Cthulhu
dfs and similar
,
dsu
,
graphs
1500
x8454
1572A
Book
binary search
,
brute force
,
data structures
,
dp
,
graphs
,
implementation
,
sortings
1800
x8448
219D
Choosing Capital for Treeland
dfs and similar
,
dp
,
graphs
,
trees
1700
x8412
1093D
Beautiful Graph
dfs and similar
,
graphs
1700
x8281
899C
Dividing the numbers
constructive algorithms
,
graphs
,
math
1300
x8222
1369D
TediousLee
dp
,
graphs
,
greedy
,
math
,
trees
1900
x8218
475B
Strongly Connected City
brute force
,
dfs and similar
,
graphs
,
implementation
1400
x8164
1361A
Johnny and Contribution
constructive algorithms
,
graphs
,
greedy
,
sortings
1700
x8118
339C
Xenia and Weights
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
greedy
,
shortest paths
1700
x8101
1615C
Menorah
brute force
,
graphs
,
greedy
,
math
1600
x7981
242C
King's Path
dfs and similar
,
graphs
,
hashing
,
shortest paths
1800
x7911
449B
Jzzhu and Cities
graphs
,
greedy
,
shortest paths
2000
x7808
744A
Hongcow Builds A Nation
dfs and similar
,
graphs
1500
x7795
1411C
Peaceful Rooks
dfs and similar
,
dsu
,
graphs
1700
x7724
1340B
Nastya and Scoreboard
bitmasks
,
dp
,
graphs
,
greedy
1700
x7551
574B
Bear and Three Musketeers
brute force
,
dfs and similar
,
graphs
,
hashing
1500
x7551
1592C
Bakry and Partitioning
bitmasks
,
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
trees
1700
x7476
292B
Network Topology
graphs
,
implementation
1200
x7418
1850H
The Third Letter
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
1700
x7321
1283D
Christmas Trees
graphs
,
greedy
,
shortest paths
1800
x7318
659E
New Reform
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
1600
x7255
1517D
Explorer Space
dp
,
graphs
,
shortest paths
1800
x7240
1244D
Paint the Tree
brute force
,
constructive algorithms
,
dp
,
graphs
,
implementation
,
trees
1800
x7171
1133F1
Spanning Tree with Maximum Degree
graphs
1600
x7153
939D
Love Rescue
dfs and similar
,
dsu
,
graphs
,
greedy
,
strings
1600
x7052
320B
Ping-Pong (Easy Version)
dfs and similar
,
graphs
1500
x7041
1594D
The Number of Imposters
constructive algorithms
,
dfs and similar
,
dp
,
dsu
,
graphs
1700
x7015
1296E1
String Coloring (easy version)
constructive algorithms
,
dp
,
graphs
,
greedy
,
sortings
1800
x6998
1063B
Labyrinth
graphs
,
shortest paths
1800
x6977
1334D
Minimum Euler Cycle
constructive algorithms
,
graphs
,
greedy
,
implementation
1800
x6956
682C
Alyona and the Tree
dfs and similar
,
dp
,
graphs
,
trees
1600
x6955
1242B
0-1 MST
dfs and similar
,
dsu
,
graphs
,
sortings
1900
x6915
1027D
Mouse Hunt
dfs and similar
,
graphs
1700
x6914
1609D
Social Network
dsu
,
graphs
,
greedy
,
implementation
,
trees
1600
x6844
609E
Minimum spanning tree for each edge
data structures
,
dfs and similar
,
dsu
,
graphs
,
trees
2100
x6810
723D
Lakes in Berland
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
1600
x6783
1245D
Shichikuji and Power Grid
dsu
,
graphs
,
greedy
,
shortest paths
,
trees
1900
x6782
1760G
SlavicG's Favorite Problem
bitmasks
,
dfs and similar
,
graphs
1700
x6727
731C
Socks
dfs and similar
,
dsu
,
graphs
,
greedy
1600
x6697
930A
Peculiar apple-tree
dfs and similar
,
graphs
,
trees
1500
x6690
1690F
Shifting String
graphs
,
math
,
number theory
,
strings
1700
x6673
1385E
Directing Edges
constructive algorithms
,
dfs and similar
,
graphs
2000
x6667
1552D
Array Differentiation
bitmasks
,
brute force
,
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
math
1800
x6635
1768D
Lucky Permutation
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
1800
x6598
1931F
Chat Screenshots
combinatorics
,
dfs and similar
,
graphs
1700
x6542
1213G
Path Queries
divide and conquer
,
dsu
,
graphs
,
sortings
,
trees
1800
x6531
570D
Tree Requests
binary search
,
bitmasks
,
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2200
x6526
489D
Unbearable Controversy of Being
brute force
,
combinatorics
,
dfs and similar
,
graphs
1700
x6510
986A
Fair
graphs
,
greedy
,
number theory
,
shortest paths
1600
x6483
1899F
Alex's whims
constructive algorithms
,
graphs
,
greedy
,
shortest paths
,
trees
1600
x6416
1204C
Anna, Svyatoslav and Maps
dp
,
graphs
,
greedy
,
shortest paths
1700
x6410
639B
Bear and Forgotten Tree 3
constructive algorithms
,
graphs
,
trees
1600
x6367
1873H
Mad City
dfs and similar
,
dsu
,
games
,
graphs
,
shortest paths
,
trees
1700
x6357
1608C
Game Master
data structures
,
dfs and similar
,
dp
,
graphs
,
greedy
,
two pointers
1700
x6341
1868B1
Candy Party (Easy Version)
bitmasks
,
constructive algorithms
,
graphs
,
greedy
,
implementation
,
math
1700
x6293
999E
Reachability from the Capital
dfs and similar
,
graphs
,
greedy
2000
x6283
1205B
Shortest Cycle
bitmasks
,
brute force
,
graphs
,
shortest paths
1900
x6259
954D
Fight Against Traffic
dfs and similar
,
graphs
,
shortest paths
1600
x6252
61D
Eternal Victory
dfs and similar
,
graphs
,
greedy
,
shortest paths
,
trees
1800
x6185
1009D
Relatively Prime Graph
brute force
,
constructive algorithms
,
graphs
,
greedy
,
math
1700
x6119
1470B
Strange Definition
bitmasks
,
graphs
,
hashing
,
math
,
number theory
1900
x6114
1388D
Captain Flint and Treasure
data structures
,
dfs and similar
,
graphs
,
greedy
,
implementation
,
trees
2000
x6083
300B
Coach
brute force
,
dfs and similar
,
graphs
1500
x6033
1304D
Shortest and Longest LIS
constructive algorithms
,
graphs
,
greedy
,
two pointers
1800
x5995
1307D
Cow and Fields
binary search
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
,
sortings
1900
x5926
1805D
A Wide, Wide Graph
dfs and similar
,
dp
,
graphs
,
greedy
,
trees
1800
x5908
463D
Gargari and Permutations
dfs and similar
,
dp
,
graphs
,
implementation
1900
x5884
118E
Bertown roads
dfs and similar
,
graphs
2000
x5851
1436D
Bandit in a City
binary search
,
dfs and similar
,
graphs
,
greedy
,
trees
1900
x5801
25C
Roads in Berland
graphs
,
shortest paths
1900
x5765
1344B
Monopole Magnets
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
2000
x5745
1320B
Navigation System
dfs and similar
,
graphs
,
shortest paths
1700
x5734
1881F
Minimum Maximum Distance
dfs and similar
,
dp
,
graphs
,
shortest paths
,
trees
1700
x5700
1272E
Nearest Opposite Parity
dfs and similar
,
graphs
,
shortest paths
1900
x5694
920E
Connected Components?
data structures
,
dfs and similar
,
dsu
,
graphs
2100
x5644
1775D
Friendly Spiders
dfs and similar
,
graphs
,
math
,
number theory
,
shortest paths
1800
x5641
402C
Searching for Graph
brute force
,
constructive algorithms
,
graphs
1500
x5641
721C
Journey
dp
,
graphs
1800
x5633
1872F
Selling a Menagerie
dfs and similar
,
dsu
,
graphs
,
implementation
,
math
1800
x5627
1095F
Make It Connected
dsu
,
graphs
,
greedy
1900
x5615
813C
The Tag Game
dfs and similar
,
graphs
1700
x5604
698B
Fix a Tree
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
trees
1700
x5580
689B
Mike and Shortcuts
dfs and similar
,
graphs
,
greedy
,
shortest paths
1600
x5570
1056D
Decorate Apple Tree
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
greedy
,
sortings
,
trees
1600
x5556
1454E
Number of Simple Paths
combinatorics
,
dfs and similar
,
graphs
,
trees
2000
x5446
1624G
MinOr Tree
bitmasks
,
dfs and similar
,
dsu
,
graphs
,
greedy
1900
x5444
1822F
Gardening Friends
brute force
,
dfs and similar
,
dp
,
graphs
,
trees
1700
x5404
343D
Water Tree
data structures
,
dfs and similar
,
graphs
,
trees
2100
x5318
786B
Legacy
data structures
,
graphs
,
shortest paths
2300
x5279
1867D
Cyclic Operations
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
implementation
1800
x5233
1510K
King's Task
brute force
,
graphs
,
implementation
1200
x5229
1915G
Bicycles
graphs
,
greedy
,
implementation
,
shortest paths
,
sortings
1800
x5179
1367E
Necklace Assembly
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
number theory
1900
x5106
1176D
Recover it!
dfs and similar
,
graphs
,
greedy
,
number theory
,
sortings
1800
x5102
1210A
Anadi and Domino
brute force
,
graphs
1700
x5097
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