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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
5 days
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data structures
combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
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combinatorics
constructive algorithms
data structures
dfs and similar
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dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
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implementation
interactive
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Problems
#
Name
222B
Cosmic Tables
data structures
,
implementation
1300
x5986
1424G
Years
data structures
,
sortings
1300
x5653
195B
After Training
data structures
,
implementation
,
math
1300
x5125
1324D
Pair of Topics
binary search
,
data structures
,
sortings
,
two pointers
1400
x26850
1348B
Phoenix and Beauty
constructive algorithms
,
data structures
,
greedy
,
sortings
1400
x24587
1365C
Rotation Matching
constructive algorithms
,
data structures
,
greedy
,
implementation
1400
x22417
1506D
Epic Transformation
constructive algorithms
,
data structures
,
greedy
1400
x20796
1375C
Element Extermination
constructive algorithms
,
data structures
,
greedy
1400
x20476
514B
Han Solo and Lazer Gun
brute force
,
data structures
,
geometry
,
implementation
,
math
1400
x20223
1490E
Accidental Victory
binary search
,
data structures
,
greedy
1400
x18433
1919C
Grouping Increases
data structures
,
dp
,
greedy
1400
x16930
1515C
Phoenix and Towers
constructive algorithms
,
data structures
,
greedy
1400
x16552
816B
Karen and Coffee
binary search
,
data structures
,
implementation
1400
x16504
1393B
Applejack and Storages
constructive algorithms
,
data structures
,
greedy
,
implementation
1400
x16280
295A
Greg and Array
data structures
,
implementation
1400
x16126
1692G
2^Sort
data structures
,
dp
,
sortings
,
two pointers
1400
x16066
1519C
Berland Regional
brute force
,
data structures
,
greedy
,
number theory
,
sortings
1400
x16034
1320A
Journey Planning
data structures
,
dp
,
greedy
,
math
,
sortings
1400
x15501
1728C
Digital Logarithm
data structures
,
greedy
,
sortings
1400
x15312
1551B2
Wonderful Coloring - 2
binary search
,
constructive algorithms
,
data structures
,
greedy
1400
x15079
650A
Watchmen
data structures
,
geometry
,
math
1400
x15072
1697C
awoo's Favorite Problem
binary search
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
strings
,
two pointers
1400
x13979
1932C
LR-remainders
brute force
,
data structures
,
implementation
,
math
,
two pointers
1400
x13841
1749C
Number Game
binary search
,
data structures
,
games
,
greedy
,
implementation
1400
x13424
1654C
Alice and the Cake
data structures
,
greedy
,
implementation
,
sortings
1400
x13173
1955D
Inaccurate Subsequence Search
data structures
,
two pointers
1400
x13028
1292A
NEKO's Maze Game
data structures
,
dsu
,
implementation
1400
x12946
1719C
Fighting Tournament
binary search
,
data structures
,
implementation
,
two pointers
1400
x12890
1860C
Game on Permutation
data structures
,
dp
,
games
,
greedy
1400
x12501
1805C
Place for a Selfie
binary search
,
data structures
,
geometry
,
math
1400
x12055
1648A
Weird Sum
combinatorics
,
data structures
,
geometry
,
math
,
matrices
,
sortings
1400
x11824
1279C
Stack of Presents
data structures
,
implementation
1400
x11432
1878E
Iva & Pav
binary search
,
bitmasks
,
data structures
,
greedy
1400
x11206
1904C
Array Game
binary search
,
brute force
,
data structures
,
sortings
,
two pointers
1400
x10767
1284B
New Year and Ascent Sequence
binary search
,
combinatorics
,
data structures
,
dp
,
implementation
,
sortings
1400
x10595
1189C
Candies!
data structures
,
dp
,
implementation
,
math
1400
x10372
1909C
Heavy Intervals
constructive algorithms
,
data structures
,
dsu
,
greedy
,
math
,
sortings
1400
x10032
1679C
Rooks Defenders
data structures
,
implementation
1400
x9913
1670C
Where is the Pizza?
data structures
,
dfs and similar
,
dsu
,
graphs
,
implementation
,
math
1400
x9534
158C
Cd and pwd commands
*special problem
,
data structures
,
implementation
1400
x8902
799B
T-shirt buying
data structures
,
implementation
1400
x8413
713A
Sonya and Queries
data structures
,
implementation
1400
x8334
1883F
You Are So Beautiful
data structures
1400
x8291
1351C
Skier
data structures
,
implementation
1400
x8230
612C
Replace To Make Regular Bracket Sequence
data structures
,
expression parsing
,
math
1400
x7689
1468C
Berpizza
data structures
,
implementation
1400
x7441
1971G
XOUR
data structures
,
dsu
,
sortings
1400
x6282
270B
Multithreading
data structures
,
greedy
,
implementation
1400
x4084
159C
String Manipulation 1.0
*special problem
,
binary search
,
brute force
,
data structures
,
strings
1400
x2921
276C
Little Girl and Maximum Sum
data structures
,
greedy
,
implementation
,
sortings
1500
x24124
1526C1
Potions (Easy Version)
brute force
,
data structures
,
dp
,
greedy
1500
x21286
1399D
Binary String To Subsequences
constructive algorithms
,
data structures
,
greedy
,
implementation
1500
x17723
1492C
Maximum width
binary search
,
data structures
,
dp
,
greedy
,
two pointers
1500
x15611
1426D
Non-zero Segments
constructive algorithms
,
data structures
,
greedy
,
sortings
1500
x15525
1490F
Equalize the Array
binary search
,
data structures
,
greedy
,
math
,
sortings
1500
x15513
1296C
Yet Another Walking Robot
data structures
,
implementation
1500
x14465
1106D
Lunar New Year and a Wander
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
1500
x13964
1547E
Air Conditioners
data structures
,
dp
,
implementation
,
shortest paths
,
sortings
,
two pointers
1500
x13882
1536C
Diluc and Kaeya
data structures
,
dp
,
hashing
,
number theory
1500
x13593
1340A
Nastya and Strange Generator
brute force
,
data structures
,
greedy
,
implementation
1500
x13148
1621B
Integers Shop
data structures
,
greedy
,
implementation
1500
x13122
356A
Knight Tournament
data structures
,
dsu
1500
x12819
1283C
Friends and Gifts
constructive algorithms
,
data structures
,
math
1500
x12803
1499C
Minimum Grid Path
brute force
,
data structures
,
greedy
,
math
1500
x12357
1872E
Data Structures Fan
binary search
,
bitmasks
,
data structures
,
dp
1500
x12123
1416A
k-Amazing Numbers
binary search
,
data structures
,
implementation
,
two pointers
1500
x11779
1915F
Greetings
data structures
,
divide and conquer
,
sortings
1500
x11721
1791F
Range Update Point Query
binary search
,
brute force
,
data structures
1500
x11570
1795C
Tea Tasting
binary search
,
data structures
,
implementation
1500
x11501
702B
Powers of Two
brute force
,
data structures
,
implementation
,
math
1500
x11319
1850G
The Morning Star
combinatorics
,
data structures
,
geometry
,
implementation
,
math
,
sortings
1500
x11289
1466D
13th Labour of Heracles
data structures
,
greedy
,
sortings
,
trees
1500
x10839
1651C
Fault-tolerant Network
brute force
,
data structures
,
implementation
1500
x10489
1817A
Almost Increasing Subsequence
binary search
,
data structures
,
greedy
1500
x10369
1926E
Vlad and an Odd Ordering
binary search
,
bitmasks
,
data structures
,
dp
,
implementation
,
math
,
number theory
1500
x10171
1179A
Valeriy and Deque
data structures
,
implementation
1500
x10144
1313C1
Skyscrapers (easy version)
brute force
,
data structures
,
dp
,
greedy
1500
x10114
1676H2
Maximum Crossings (Hard Version)
data structures
,
divide and conquer
,
sortings
1500
x10080
1883D
In Love
data structures
,
greedy
1500
x10067
1287B
Hyperset
brute force
,
data structures
,
implementation
1500
x9186
855B
Marvolo Gaunt's Ring
brute force
,
data structures
,
dp
1500
x8377
1732D1
Balance (Easy version)
brute force
,
data structures
,
implementation
,
number theory
1500
x8302
978F
Mentors
binary search
,
data structures
,
implementation
1500
x8052
845C
Two TVs
data structures
,
greedy
,
sortings
1500
x7918
332B
Maximum Absurdity
data structures
,
dp
,
implementation
1500
x7826
1740D
Knowledge Cards
constructive algorithms
,
data structures
1500
x7723
960B
Minimize the error
data structures
,
greedy
,
sortings
1500
x7419
340D
Bubble Sort Graph
binary search
,
data structures
,
dp
1500
x7017
1163B1
Cat Party (Easy Edition)
data structures
,
implementation
1500
x6888
272C
Dima and Staircase
data structures
,
implementation
1500
x6687
1106B
Lunar New Year and Food Ordering
data structures
,
implementation
1500
x6685
527C
Glass Carving
binary search
,
data structures
,
implementation
1500
x6665
821C
Okabe and Boxes
data structures
,
greedy
,
trees
1500
x6631
91B
Queue
binary search
,
data structures
1500
x6531
696A
Lorenzo Von Matterhorn
brute force
,
data structures
,
implementation
,
trees
1500
x5989
501C
Misha and Forest
constructive algorithms
,
data structures
,
greedy
,
sortings
,
trees
1500
x5511
204B
Little Elephant and Cards
binary search
,
data structures
1500
x5030
367A
Sereja and Algorithm
data structures
,
implementation
1500
x4287
1218F
Workout plan
data structures
,
greedy
1500
x2886
177D2
Encrypting Messages
data structures
1500
x1784
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