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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
36:00:34
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Difficulty:
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dp
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
95B
Lucky Numbers
dp
,
greedy
1800
x1170
1554E
You
dfs and similar
,
dp
,
math
,
number theory
2600
x1167
1764E
Doremy's Number Line
dp
,
greedy
,
sortings
2400
x1159
1264D1
Beautiful Bracket Sequence (easy version)
combinatorics
,
dp
,
probabilities
2600
x1159
1437F
Emotional Fishermen
combinatorics
,
dp
,
math
,
two pointers
2600
x1154
1914G2
Light Bulbs (Hard Version)
combinatorics
,
data structures
,
dfs and similar
,
dp
,
graphs
,
hashing
2300
x1153
1739E
Cleaning Robot
bitmasks
,
dp
2400
x1152
1556F
Sports Betting
bitmasks
,
combinatorics
,
dp
,
graphs
,
math
,
probabilities
2500
x1151
364B
Free Market
dp
,
greedy
2200
x1143
1137C
Museums Tour
dp
,
graphs
,
implementation
2500
x1141
1585F
Non-equal Neighbours
combinatorics
,
dp
,
math
2400
x1139
1866D
Digital Wallet
dp
,
greedy
2300
x1138
498B
Name That Tune
dp
,
probabilities
,
two pointers
2400
x1137
590D
Top Secret Task
dp
2300
x1135
958C2
Encryption (medium)
dp
2000
x1129
1697E
Coloring
brute force
,
combinatorics
,
constructive algorithms
,
dp
,
geometry
,
graphs
,
greedy
,
implementation
,
math
2400
x1123
1151F
Sonya and Informatics
combinatorics
,
dp
,
matrices
,
probabilities
2300
x1123
1065F
Up and Down the Tree
dfs and similar
,
dp
,
trees
2500
x1122
1131E
String Multiplication
dp
,
greedy
,
strings
2300
x1117
1766E
Decomposition
binary search
,
brute force
,
data structures
,
divide and conquer
,
dp
,
two pointers
2300
x1113
1089A
Alice the Fan
dp
2200
x1110
1827C
Palindrome Partition
binary search
,
brute force
,
data structures
,
dp
,
hashing
,
strings
2600
x1108
995F
Cowmpany Cowmpensation
combinatorics
,
dp
,
math
,
trees
2700
x1107
1245E
Hyakugoku and Ladders
dp
,
probabilities
,
shortest paths
2300
x1106
1922F
Replace on Segment
dp
,
graph matchings
2500
x1103
771D
Bear and Company
dp
2500
x1099
377C
Captains Mode
bitmasks
,
dp
,
games
2200
x1098
1313D
Happy New Year
bitmasks
,
dp
,
implementation
2500
x1093
671D
Roads in Yusland
data structures
,
dp
,
greedy
2900
x1091
1146F
Leaf Partition
dp
,
trees
2500
x1082
369D
Valera and Fools
dfs and similar
,
dp
,
graphs
,
shortest paths
2200
x1081
1679E
Typical Party in Dorm
bitmasks
,
combinatorics
,
dp
,
strings
2400
x1075
1666F
Fancy Stack
combinatorics
,
dp
,
implementation
2200
x1075
1839E
Decreasing Game
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
interactive
2400
x1070
1733E
Conveyor
constructive algorithms
,
dp
,
math
2700
x1070
1307E
Cow and Treats
binary search
,
combinatorics
,
dp
,
greedy
,
implementation
,
math
2500
x1068
797F
Mice and Holes
data structures
,
dp
,
greedy
,
sortings
2600
x1066
1699E
Three Days Grace
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
2600
x1065
1003F
Abbreviation
dp
,
hashing
,
strings
2200
x1063
1398F
Controversial Rounds
binary search
,
data structures
,
dp
,
greedy
,
two pointers
2500
x1060
498D
Traffic Jams in the Land
data structures
,
dp
,
number theory
2400
x1057
1921G
Mischievous Shooter
brute force
,
data structures
,
divide and conquer
,
dp
,
implementation
2200
x1056
360C
Levko and Strings
combinatorics
,
dp
2500
x1052
526E
Transmitting Levels
dp
,
implementation
2400
x1051
1868C
Travel Plan
combinatorics
,
dp
,
implementation
,
math
,
trees
2400
x1050
1334F
Strange Function
binary search
,
data structures
,
dp
,
greedy
2500
x1050
1701E
Text Editor
brute force
,
dp
,
greedy
,
strings
2500
x1049
403D
Beautiful Pairs of Numbers
combinatorics
,
dp
2300
x1049
641D
Little Artem and Random Variable
dp
,
implementation
,
math
,
probabilities
2400
x1044
557E
Ann and Half-Palindrome
data structures
,
dp
,
graphs
,
string suffix structures
,
strings
,
trees
2300
x1044
367E
Sereja and Intervals
combinatorics
,
dp
2700
x1043
1874B
Jellyfish and Math
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
,
shortest paths
2400
x1031
1015F
Bracket Substring
dp
,
strings
2300
x1026
900E
Maximum Questions
data structures
,
dp
,
strings
2100
x1018
18D
Seller Bob
brute force
,
dp
,
greedy
2000
x1015
780F
Axel and Marston in Bitland
bitmasks
,
dp
,
graphs
,
matrices
2400
x1014
238C
World Eater Brothers
dfs and similar
,
dp
,
greedy
,
trees
2100
x1014
1716E
Swap and Maximum Block
bitmasks
,
data structures
,
dfs and similar
,
divide and conquer
,
dp
2500
x1008
251C
Number Transformation
dp
,
greedy
,
number theory
2000
x1008
31E
TV Game
dp
2400
x999
18E
Flag 2
dp
2000
x998
1004E
Sonya and Ice Cream
binary search
,
data structures
,
dp
,
greedy
,
shortest paths
,
trees
2400
x996
960G
Bandit Blues
combinatorics
,
dp
,
fft
,
math
2900
x995
489E
Hiking
binary search
,
dp
2300
x995
1658E
Gojou and Matrix Game
data structures
,
dp
,
games
,
hashing
,
implementation
,
math
,
number theory
,
sortings
2500
x992
1815D
XOR Counting
bitmasks
,
combinatorics
,
dp
,
math
2600
x990
398B
Painting The Wall
dp
,
probabilities
x989
1943D1
Counting Is Fun (Easy Version)
brute force
,
combinatorics
,
dp
,
math
2400
x988
1794E
Labeling the Tree with Distances
data structures
,
dp
,
greedy
,
hashing
,
implementation
,
trees
2400
x988
1716F
Bags with Balls
combinatorics
,
dp
,
math
,
number theory
2500
x986
917D
Stranger Trees
dp
,
math
,
matrices
,
trees
2600
x984
1107G
Vasya and Maximum Profit
binary search
,
constructive algorithms
,
data structures
,
dp
,
dsu
2400
x982
1662L
Il Derby della Madonnina
data structures
,
dp
,
math
x981
835F
Roads in the Kingdom
dfs and similar
,
dp
,
graphs
,
trees
2500
x980
575F
Bulbo
dp
,
greedy
2100
x980
744C
Hongcow Buys a Deck of Cards
bitmasks
,
brute force
,
dp
2400
x979
1863F
Divide, XOR, and Conquer
bitmasks
,
dp
,
math
2600
x977
1172C1
Nauuo and Pictures (easy version)
dp
,
probabilities
2300
x974
77C
Beavermuncher-0xFF
dfs and similar
,
dp
,
dsu
,
greedy
,
trees
2100
x974
1332F
Independent Set
dfs and similar
,
dp
,
trees
2500
x971
1625E1
Cats on the Upgrade (easy version)
brute force
,
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
graphs
,
trees
2500
x969
1354F
Summoning Minions
constructive algorithms
,
dp
,
flows
,
graph matchings
,
greedy
,
sortings
2500
x969
756D
Bacterial Melee
brute force
,
combinatorics
,
dp
,
string suffix structures
2400
x967
954F
Runner's Problem
dp
,
matrices
,
sortings
2100
x966
886E
Maximum Element
combinatorics
,
dp
,
math
2400
x966
317D
Game with Powers
dp
,
games
2300
x965
629E
Famil Door and Roads
combinatorics
,
data structures
,
dfs and similar
,
dp
,
probabilities
,
trees
2300
x964
1093F
Vasya and Array
dp
2400
x963
28C
Bath Queue
combinatorics
,
dp
,
probabilities
2200
x959
1580B
Mathematics Curriculum
brute force
,
combinatorics
,
dp
,
trees
2600
x957
1295F
Good Contest
combinatorics
,
dp
,
probabilities
2700
x950
1194F
Crossword Expert
combinatorics
,
dp
,
number theory
,
probabilities
,
two pointers
2400
x950
1372E
Omkar and Last Floor
dp
,
greedy
,
two pointers
2900
x949
173C
Spiral Maximum
brute force
,
dp
1900
x948
659G
Fence Divercity
combinatorics
,
dp
,
number theory
2300
x945
1038E
Maximum Matching
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
2400
x944
813D
Two Melodies
dp
,
flows
2600
x944
1132G
Greedy Subsequences
data structures
,
dp
,
trees
2400
x941
1389F
Bicolored Segments
data structures
,
dp
,
graph matchings
,
sortings
2600
x937
1784D
Wooden Spoon
combinatorics
,
dp
2400
x936
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