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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
45:14:23
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data structures
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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Problems
#
Name
1296C
Yet Another Walking Robot
data structures
,
implementation
1500
x14283
1638C
Inversion Graph
data structures
,
dsu
,
graphs
,
math
1300
x14265
1582C
Grandma Capa Knits a Scarf
brute force
,
data structures
,
greedy
,
strings
,
two pointers
1200
x14028
1234D
Distinct Characters Queries
data structures
1600
x13984
1697C
awoo's Favorite Problem
binary search
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
strings
,
two pointers
1400
x13838
1106D
Lunar New Year and a Wander
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
1500
x13734
1763B
Incinerate
binary search
,
brute force
,
data structures
,
implementation
,
math
,
sortings
1200
x13726
1566D1
Seating Arrangements (easy version)
data structures
,
greedy
,
sortings
1100
x13672
1547E
Air Conditioners
data structures
,
dp
,
implementation
,
shortest paths
,
sortings
,
two pointers
1500
x13653
427B
Prison Transfer
data structures
,
implementation
1100
x13640
1374E1
Reading Books (easy version)
data structures
,
greedy
,
sortings
1600
x13447
1536C
Diluc and Kaeya
data structures
,
dp
,
hashing
,
number theory
1500
x13436
349B
Color the Fence
data structures
,
dp
,
greedy
,
implementation
1700
x13396
380C
Sereja and Brackets
data structures
,
schedules
2000
x13328
1340A
Nastya and Strange Generator
brute force
,
data structures
,
greedy
,
implementation
1500
x13120
1749C
Number Game
binary search
,
data structures
,
games
,
greedy
,
implementation
1400
x13109
1654C
Alice and the Cake
data structures
,
greedy
,
implementation
,
sortings
1400
x13042
1621B
Integers Shop
data structures
,
greedy
,
implementation
1500
x12987
1848B
Vika and the Bridge
binary search
,
data structures
,
greedy
,
implementation
,
math
,
sortings
1200
x12946
1292A
NEKO's Maze Game
data structures
,
dsu
,
implementation
1400
x12843
343B
Alternating Current
data structures
,
greedy
,
implementation
1600
x12837
1214C
Bad Sequence
data structures
,
greedy
1200
x12766
1719C
Fighting Tournament
binary search
,
data structures
,
implementation
,
two pointers
1400
x12755
1381A2
Prefix Flip (Hard Version)
constructive algorithms
,
data structures
,
implementation
,
strings
,
two pointers
1700
x12687
1932C
LR-remainders
brute force
,
data structures
,
implementation
,
math
,
two pointers
1400
x12678
1283C
Friends and Gifts
constructive algorithms
,
data structures
,
math
1500
x12678
356A
Knight Tournament
data structures
,
dsu
1500
x12625
5C
Longest Regular Bracket Sequence
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
,
strings
1900
x12418
600E
Lomsat gelral
data structures
,
dfs and similar
,
dsu
,
trees
2300
x12352
18C
Stripe
data structures
,
implementation
1200
x12331
86D
Powerful array
data structures
,
implementation
,
math
,
two pointers
2200
x12300
1499C
Minimum Grid Path
brute force
,
data structures
,
greedy
,
math
1500
x12269
1265B
Beautiful Numbers
data structures
,
implementation
,
math
,
two pointers
1300
x12227
1860C
Game on Permutation
data structures
,
dp
,
games
,
greedy
1400
x12148
1343D
Constant Palindrome Sum
brute force
,
data structures
,
greedy
,
two pointers
1700
x12144
1474C
Array Destruction
brute force
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
1700
x12091
1333C
Eugene and an array
binary search
,
data structures
,
implementation
,
two pointers
1700
x12050
1007A
Reorder the Array
combinatorics
,
data structures
,
math
,
sortings
,
two pointers
1300
x11940
1805C
Place for a Selfie
binary search
,
data structures
,
geometry
,
math
1400
x11849
1726C
Jatayu's Balanced Bracket Sequence
data structures
,
dsu
,
graphs
,
greedy
1300
x11795
879B
Table Tennis
data structures
,
implementation
1200
x11761
1779C
Least Prefix Sum
data structures
,
greedy
1600
x11649
1416A
k-Amazing Numbers
binary search
,
data structures
,
implementation
,
two pointers
1500
x11535
701B
Cells Not Under Attack
data structures
,
math
1200
x11530
1648A
Weird Sum
combinatorics
,
data structures
,
geometry
,
math
,
matrices
,
sortings
1400
x11526
1872E
Data Structures Fan
binary search
,
bitmasks
,
data structures
,
dp
1500
x11491
1593E
Gardener and Tree
brute force
,
data structures
,
dfs and similar
,
greedy
,
implementation
,
trees
1600
x11474
577B
Modulo Sum
combinatorics
,
data structures
,
dp
,
two pointers
1900
x11323
1279C
Stack of Presents
data structures
,
implementation
1400
x11307
1799A
Recent Actions
data structures
,
greedy
,
implementation
,
math
800
x11277
702B
Powers of Two
brute force
,
data structures
,
implementation
,
math
1500
x11224
1791F
Range Update Point Query
binary search
,
brute force
,
data structures
1500
x11217
1294D
MEX maximizing
data structures
,
greedy
,
implementation
,
math
1600
x11181
1795C
Tea Tasting
binary search
,
data structures
,
implementation
1500
x11078
1915F
Greetings
data structures
,
divide and conquer
,
sortings
1500
x11008
1850G
The Morning Star
combinatorics
,
data structures
,
geometry
,
implementation
,
math
,
sortings
1500
x10928
1100B
Build a Contest
data structures
,
implementation
1300
x10856
755B
PolandBall and Game
binary search
,
data structures
,
games
,
greedy
,
sortings
,
strings
1100
x10851
1856C
To Become Max
binary search
,
brute force
,
data structures
,
dp
1600
x10715
1466D
13th Labour of Heracles
data structures
,
greedy
,
sortings
,
trees
1500
x10676
1843E
Tracking Segments
binary search
,
brute force
,
data structures
,
two pointers
1600
x10653
1878E
Iva & Pav
binary search
,
bitmasks
,
data structures
,
greedy
1400
x10580
264A
Escape from Stones
constructive algorithms
,
data structures
,
implementation
,
two pointers
1200
x10560
1626C
Monsters And Spells
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1700
x10523
1870C
Colorful Table
binary search
,
data structures
,
dp
,
implementation
,
math
,
two pointers
1300
x10519
1284B
New Year and Ascent Sequence
binary search
,
combinatorics
,
data structures
,
dp
,
implementation
,
sortings
1400
x10502
1651C
Fault-tolerant Network
brute force
,
data structures
,
implementation
1500
x10372
1867C
Salyg1n and the MEX Game
constructive algorithms
,
data structures
,
games
,
greedy
,
interactive
1300
x10370
1700C
Helping the Nature
constructive algorithms
,
data structures
,
greedy
1700
x10365
1335E1
Three Blocks Palindrome (easy version)
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x10349
1748C
Zero-Sum Prefixes
brute force
,
data structures
,
dp
,
greedy
,
implementation
1600
x10260
1189C
Candies!
data structures
,
dp
,
implementation
,
math
1400
x10221
1695C
Zero Path
brute force
,
data structures
,
dp
,
graphs
,
greedy
,
shortest paths
1700
x10214
1857F
Sum and Product
binary search
,
data structures
,
math
1600
x10142
1817A
Almost Increasing Subsequence
binary search
,
data structures
,
greedy
1500
x10134
271D
Good Substrings
data structures
,
strings
1800
x10078
1179A
Valeriy and Deque
data structures
,
implementation
1500
x10067
1175B
Catch Overflow!
data structures
,
expression parsing
,
implementation
1600
x10019
1904C
Array Game
binary search
,
brute force
,
data structures
,
sortings
,
two pointers
1400
x9981
1313C1
Skyscrapers (easy version)
brute force
,
data structures
,
dp
,
greedy
1500
x9972
1676H2
Maximum Crossings (Hard Version)
data structures
,
divide and conquer
,
sortings
1500
x9852
61E
Enemy is weak
data structures
,
trees
1900
x9846
1722E
Counting Rectangles
brute force
,
data structures
,
dp
,
implementation
1600
x9786
1679C
Rooks Defenders
data structures
,
implementation
1400
x9762
1400D
Zigzags
brute force
,
combinatorics
,
data structures
,
math
,
two pointers
1900
x9715
1849C
Binary String Copying
binary search
,
brute force
,
data structures
,
hashing
,
strings
1600
x9606
1909C
Heavy Intervals
constructive algorithms
,
data structures
,
dsu
,
greedy
,
math
,
sortings
1400
x9601
1883D
In Love
data structures
,
greedy
1500
x9561
1670C
Where is the Pizza?
data structures
,
dfs and similar
,
dsu
,
graphs
,
implementation
,
math
1400
x9408
459D
Pashmak and Parmida's problem
data structures
,
divide and conquer
,
sortings
1800
x9400
1862E
Kolya and Movie Theatre
constructive algorithms
,
data structures
,
greedy
1600
x9316
385C
Bear and Prime Numbers
binary search
,
brute force
,
data structures
,
dp
,
implementation
,
math
,
number theory
1700
x9311
777B
Game of Credit Cards
data structures
,
dp
,
greedy
,
sortings
1300
x9292
1196D2
RGB Substring (hard version)
data structures
,
dp
,
implementation
,
two pointers
1600
x9267
1861C
Queries for the Array
data structures
,
dfs and similar
,
implementation
,
strings
,
trees
1600
x9252
220B
Little Elephant and Array
constructive algorithms
,
data structures
1800
x9238
1473D
Program
data structures
,
dp
,
implementation
,
strings
1700
x9230
567C
Geometric Progression
binary search
,
data structures
,
dp
1700
x9224
1926E
Vlad and an Odd Ordering
binary search
,
bitmasks
,
data structures
,
dp
,
implementation
,
math
,
number theory
1500
x9188
1041C
Coffee Break
binary search
,
data structures
,
greedy
,
two pointers
1600
x9184
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