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Codeforces Round 944 (Div. 4)
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two pointers
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
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implementation
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math
matrices
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Problems
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Name
446A
DZY Loves Sequences
dp
,
implementation
,
two pointers
1600
x12237
1343D
Constant Palindrome Sum
brute force
,
data structures
,
greedy
,
two pointers
1700
x12202
1333C
Eugene and an array
binary search
,
data structures
,
implementation
,
two pointers
1700
x12171
1007A
Reorder the Array
combinatorics
,
data structures
,
math
,
sortings
,
two pointers
1300
x11985
387B
George and Round
brute force
,
greedy
,
two pointers
1200
x11915
165C
Another Problem on Strings
binary search
,
brute force
,
dp
,
math
,
strings
,
two pointers
1600
x11877
716B
Complete the Word
greedy
,
two pointers
1300
x11813
1416A
k-Amazing Numbers
binary search
,
data structures
,
implementation
,
two pointers
1500
x11738
1251C
Minimize The Integer
greedy
,
two pointers
1600
x11684
1884B
Haunted House
binary search
,
greedy
,
math
,
two pointers
1100
x11669
577B
Modulo Sum
combinatorics
,
data structures
,
dp
,
two pointers
1900
x11476
1407C
Chocolate Bunny
constructive algorithms
,
interactive
,
math
,
two pointers
1600
x11401
1305B
Kuroni and Simple Strings
constructive algorithms
,
greedy
,
strings
,
two pointers
1200
x11377
1891C
Smilo and Monsters
binary search
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
1500
x11290
1539D
PriceFixed
binary search
,
greedy
,
implementation
,
sortings
,
two pointers
1600
x11276
1515D
Phoenix and Socks
greedy
,
sortings
,
two pointers
1500
x11154
1336B
Xenia and Colorful Gems
binary search
,
greedy
,
math
,
sortings
,
two pointers
1700
x10995
1843E
Tracking Segments
binary search
,
brute force
,
data structures
,
two pointers
1600
x10973
1870C
Colorful Table
binary search
,
data structures
,
dp
,
implementation
,
math
,
two pointers
1300
x10724
1626C
Monsters And Spells
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1700
x10614
1904C
Array Game
binary search
,
brute force
,
data structures
,
sortings
,
two pointers
1400
x10603
264A
Escape from Stones
constructive algorithms
,
data structures
,
implementation
,
two pointers
1200
x10600
1469C
Building a Fence
dp
,
greedy
,
implementation
,
two pointers
1600
x10495
1335E1
Three Blocks Palindrome (easy version)
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x10444
602B
Approximating a Constant Range
dp
,
implementation
,
two pointers
1400
x10433
253B
Physics Practical
binary search
,
dp
,
sortings
,
two pointers
1400
x10324
1383A
String Transformation 1
dsu
,
graphs
,
greedy
,
sortings
,
strings
,
trees
,
two pointers
1700
x10231
1355C
Count Triangles
binary search
,
implementation
,
math
,
two pointers
1800
x10201
1225B2
TV Subscriptions (Hard Version)
implementation
,
two pointers
1300
x10110
1208B
Uniqueness
binary search
,
brute force
,
implementation
,
two pointers
1500
x10073
842A
Kirill And The Game
brute force
,
two pointers
1200
x9961
1400D
Zigzags
brute force
,
combinatorics
,
data structures
,
math
,
two pointers
1900
x9804
1475D
Cleaning the Phone
binary search
,
dp
,
sortings
,
two pointers
1800
x9721
1107C
Brutality
greedy
,
sortings
,
two pointers
1300
x9650
1680C
Binary String
binary search
,
greedy
,
strings
,
two pointers
1600
x9508
1609C
Complex Market Analysis
binary search
,
dp
,
implementation
,
number theory
,
schedules
,
two pointers
1400
x9485
1196D2
RGB Substring (hard version)
data structures
,
dp
,
implementation
,
two pointers
1600
x9462
1548B
Integers Have Friends
binary search
,
data structures
,
divide and conquer
,
math
,
number theory
,
two pointers
1800
x9304
1041C
Coffee Break
binary search
,
data structures
,
greedy
,
two pointers
1600
x9257
1462E2
Close Tuples (hard version)
binary search
,
combinatorics
,
implementation
,
math
,
sortings
,
two pointers
1700
x9217
1190A
Tokitsukaze and Discard Items
implementation
,
two pointers
1400
x9209
1883G1
Dances (Easy version)
binary search
,
greedy
,
two pointers
1400
x9168
1166C
A Tale of Two Lands
binary search
,
sortings
,
two pointers
1500
x9144
660C
Hard Process
binary search
,
dp
,
two pointers
1600
x9061
920C
Swap Adjacent Elements
dfs and similar
,
greedy
,
math
,
sortings
,
two pointers
1400
x8997
1036D
Vasya and Arrays
greedy
,
two pointers
1600
x8977
788A
Functions again
dp
,
two pointers
1600
x8959
1359D
Yet Another Yet Another Task
data structures
,
dp
,
implementation
,
two pointers
2000
x8950
1198A
MP3
sortings
,
two pointers
1600
x8882
616D
Longest k-Good Segment
binary search
,
data structures
,
two pointers
1600
x8787
1430D
String Deletion
binary search
,
data structures
,
greedy
,
two pointers
1700
x8667
892B
Wrath
greedy
,
implementation
,
two pointers
1200
x8662
416A
Guess a number!
greedy
,
implementation
,
two pointers
1400
x8657
1408C
Discrete Acceleration
binary search
,
dp
,
implementation
,
math
,
two pointers
1500
x8627
231C
To Add or Not to Add
binary search
,
sortings
,
two pointers
1600
x8300
432D
Prefixes and Suffixes
dp
,
string suffix structures
,
strings
,
two pointers
2000
x8276
1948D
Tandem Repeats?
brute force
,
strings
,
two pointers
1700
x8168
1660D
Maximum Product Strikes Back
brute force
,
implementation
,
math
,
two pointers
1600
x8150
1941E
Rudolf and k Bridges
binary search
,
data structures
,
dp
,
two pointers
1600
x8141
888C
K-Dominant Character
binary search
,
implementation
,
two pointers
1400
x8080
1893B
Neutral Tonality
constructive algorithms
,
greedy
,
sortings
,
two pointers
1700
x8073
1066B
Heaters
greedy
,
two pointers
1500
x8072
279C
Ladder
dp
,
implementation
,
two pointers
1700
x8049
1497E1
Square-Free Division (easy version)
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
1700
x8034
1358D
The Best Vacation
binary search
,
brute force
,
greedy
,
implementation
,
two pointers
1900
x8020
1335E2
Three Blocks Palindrome (hard version)
brute force
,
data structures
,
dp
,
two pointers
1800
x7971
1777C
Quiz Master
binary search
,
math
,
number theory
,
sortings
,
two pointers
1700
x7815
302B
Eugeny and Play List
binary search
,
implementation
,
two pointers
1200
x7785
1849D
Array Painting
constructive algorithms
,
greedy
,
two pointers
1700
x7766
1472E
Correct Placement
binary search
,
data structures
,
dp
,
sortings
,
two pointers
1700
x7723
1566D2
Seating Arrangements (hard version)
data structures
,
greedy
,
implementation
,
sortings
,
two pointers
1600
x7698
1409E
Two Platforms
binary search
,
dp
,
sortings
,
two pointers
1800
x7556
762B
USB vs. PS/2
greedy
,
implementation
,
sortings
,
two pointers
1400
x7501
1774D
Same Count One
brute force
,
constructive algorithms
,
greedy
,
implementation
,
two pointers
1600
x7429
318B
Strings of Power
implementation
,
strings
,
two pointers
1300
x7376
1845D
Rating System
binary search
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
math
,
two pointers
1800
x7318
1148B
Born This Way
binary search
,
brute force
,
two pointers
1600
x7286
1257D
Yet Another Monster Killing Problem
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
1700
x7204
224B
Array
bitmasks
,
implementation
,
two pointers
1500
x7158
1203D2
Remove the Substring (hard version)
binary search
,
greedy
,
implementation
,
two pointers
1700
x7078
1611E1
Escape The Maze (easy version)
dfs and similar
,
greedy
,
shortest paths
,
trees
,
two pointers
1700
x6946
1728D
Letter Picking
constructive algorithms
,
dp
,
games
,
two pointers
1800
x6873
1758D
Range = √Sum
binary search
,
brute force
,
constructive algorithms
,
math
,
two pointers
1800
x6869
1158A
The Party and Sweets
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
,
sortings
,
two pointers
1500
x6860
484B
Maximum Value
binary search
,
math
,
sortings
,
two pointers
2100
x6780
1731D
Valiant's New Map
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x6717
1833F
Ira and Flamenco
combinatorics
,
constructive algorithms
,
data structures
,
implementation
,
math
,
sortings
,
two pointers
1700
x6695
493C
Vasya and Basketball
binary search
,
brute force
,
data structures
,
implementation
,
sortings
,
two pointers
1600
x6671
1394A
Boboniu Chats with Du
dp
,
greedy
,
sortings
,
two pointers
1800
x6455
1608C
Game Master
data structures
,
dfs and similar
,
dp
,
graphs
,
greedy
,
two pointers
1700
x6415
814C
An impassioned circulation of affection
brute force
,
dp
,
strings
,
two pointers
1600
x6308
777C
Alyona and Spreadsheet
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
two pointers
1600
x6278
519D
A and B and Interesting Substrings
data structures
,
dp
,
two pointers
1800
x6272
1611F
ATM and Students
binary search
,
data structures
,
two pointers
1800
x6189
505C
Mr. Kitayuta, the Treasure Hunter
dfs and similar
,
dp
,
two pointers
1900
x6082
1304D
Shortest and Longest LIS
constructive algorithms
,
graphs
,
greedy
,
two pointers
1800
x6071
1776H
Beppa and SwerChat
two pointers
1300
x6025
1734D
Slime Escape
data structures
,
dp
,
greedy
,
two pointers
1800
x6024
1508A
Binary Literature
constructive algorithms
,
greedy
,
implementation
,
strings
,
two pointers
1900
x6003
1672D
Cyclic Rotation
constructive algorithms
,
greedy
,
implementation
,
two pointers
1700
x5991
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