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Codeforces Round 943 (Div. 3)
22:46:13
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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
91B
Queue
binary search
,
data structures
1500
x6504
527C
Glass Carving
binary search
,
data structures
,
implementation
1500
x6647
1158A
The Party and Sweets
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
,
sortings
,
two pointers
1500
x6819
340D
Bubble Sort Graph
binary search
,
data structures
,
dp
1500
x7002
1010A
Fly
binary search
,
math
1500
x7990
978F
Mentors
binary search
,
data structures
,
implementation
1500
x8005
1323B
Count Subrectangles
binary search
,
greedy
,
implementation
1500
x8497
1408C
Discrete Acceleration
binary search
,
dp
,
implementation
,
math
,
two pointers
1500
x8621
1166C
A Tale of Two Lands
binary search
,
sortings
,
two pointers
1500
x9111
1933E
Turtle vs. Rabbit Race: Optimal Trainings
binary search
,
implementation
,
math
,
ternary search
1500
x9585
1659C
Line Empire
binary search
,
brute force
,
dp
,
greedy
,
implementation
,
math
1500
x9626
991C
Candies
binary search
,
implementation
1500
x9838
274A
k-Multiple Free Set
binary search
,
greedy
,
sortings
1500
x9843
1926E
Vlad and an Odd Ordering
binary search
,
bitmasks
,
data structures
,
dp
,
implementation
,
math
,
number theory
1500
x9849
1208B
Uniqueness
binary search
,
brute force
,
implementation
,
two pointers
1500
x10059
1817A
Almost Increasing Subsequence
binary search
,
data structures
,
greedy
1500
x10288
1436C
Binary Search
binary search
,
combinatorics
1500
x10519
1891C
Smilo and Monsters
binary search
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
1500
x11210
1760F
Quests
binary search
,
greedy
,
sortings
1500
x11255
1795C
Tea Tasting
binary search
,
data structures
,
implementation
1500
x11365
1791F
Range Update Point Query
binary search
,
brute force
,
data structures
1500
x11448
1811E
Living Sequence
binary search
,
dp
,
math
,
number theory
1500
x11514
1416A
k-Amazing Numbers
binary search
,
data structures
,
implementation
,
two pointers
1500
x11690
1872E
Data Structures Fan
binary search
,
bitmasks
,
data structures
,
dp
1500
x11843
1249C2
Good Numbers (hard version)
binary search
,
greedy
,
math
,
meet-in-the-middle
1500
x12205
1379B
Dubious Cyrpto
binary search
,
brute force
,
math
,
number theory
1500
x12467
670D2
Magic Powder - 2
binary search
,
implementation
1500
x12991
702C
Cellular Network
binary search
,
implementation
,
two pointers
1500
x13014
812C
Sagheer and Nubian Market
binary search
,
sortings
1500
x13115
1792C
Min Max Sort
binary search
,
brute force
,
greedy
,
math
,
two pointers
1500
x13166
1462E1
Close Tuples (easy version)
binary search
,
combinatorics
,
math
,
sortings
,
two pointers
1500
x13175
701C
They Are Everywhere
binary search
,
strings
,
two pointers
1500
x13691
1301B
Motarack's Birthday
binary search
,
greedy
,
ternary search
1500
x13853
1690E
Price Maximization
binary search
,
greedy
,
math
,
two pointers
1500
x14461
1419D2
Sage's Birthday (hard version)
binary search
,
brute force
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
1500
x14703
1486B
Eastern Exhibition
binary search
,
geometry
,
shortest paths
,
sortings
1500
x15202
1490F
Equalize the Array
binary search
,
data structures
,
greedy
,
math
,
sortings
1500
x15420
1492C
Maximum width
binary search
,
data structures
,
dp
,
greedy
,
two pointers
1500
x15545
165B
Burning Midnight Oil
binary search
,
implementation
1500
x16440
1487D
Pythagorean Triples
binary search
,
brute force
,
math
,
number theory
1500
x16967
676C
Vasya and String
binary search
,
dp
,
strings
,
two pointers
1500
x18066
1538F
Interesting Function
binary search
,
dp
,
math
,
number theory
1500
x18302
580B
Kefa and Company
binary search
,
sortings
,
two pointers
1500
x24869
1769B2
Копирование файлов II
*special problem
,
binary search
,
brute force
,
math
1400
x854
386B
Fly, freebies, fly!
binary search
,
brute force
,
implementation
1400
x2085
335A
Banana
binary search
,
constructive algorithms
,
greedy
1400
x2509
159C
String Manipulation 1.0
*special problem
,
binary search
,
brute force
,
data structures
,
strings
1400
x2918
1184B1
The Doctor Meets Vader (Easy)
binary search
,
sortings
1400
x5087
233B
Non-square Equation
binary search
,
brute force
,
math
1400
x7300
888C
K-Dominant Character
binary search
,
implementation
,
two pointers
1400
x8059
604B
More Cowbell
binary search
,
greedy
1400
x8236
1896C
Matching Arrays
binary search
,
constructive algorithms
,
greedy
,
sortings
1400
x8561
1883G1
Dances (Easy version)
binary search
,
greedy
,
two pointers
1400
x9097
975C
Valhalla Siege
binary search
1400
x9365
1609C
Complex Market Analysis
binary search
,
dp
,
implementation
,
number theory
,
schedules
,
two pointers
1400
x9472
253B
Physics Practical
binary search
,
dp
,
sortings
,
two pointers
1400
x10304
1904C
Array Game
binary search
,
brute force
,
data structures
,
sortings
,
two pointers
1400
x10505
1284B
New Year and Ascent Sequence
binary search
,
combinatorics
,
data structures
,
dp
,
implementation
,
sortings
1400
x10584
1878E
Iva & Pav
binary search
,
bitmasks
,
data structures
,
greedy
1400
x10950
1907D
Jumping Through Segments
binary search
,
constructive algorithms
1400
x11876
1805C
Place for a Selfie
binary search
,
data structures
,
geometry
,
math
1400
x11983
1840D
Wooden Toy Festival
binary search
,
greedy
,
sortings
1400
x12755
1771B
Hossam and Friends
binary search
,
constructive algorithms
,
dp
,
two pointers
1400
x12780
1719C
Fighting Tournament
binary search
,
data structures
,
implementation
,
two pointers
1400
x12856
1721C
Min-Max Array Transformation
binary search
,
greedy
,
two pointers
1400
x12958
1929C
Sasha and the Casino
binary search
,
brute force
,
constructive algorithms
,
games
,
greedy
,
math
1400
x13126
1845C
Strong Password
binary search
,
dp
,
greedy
,
strings
1400
x13296
1749C
Number Game
binary search
,
data structures
,
games
,
greedy
,
implementation
1400
x13304
1263C
Everyone is a Winner!
binary search
,
math
,
meet-in-the-middle
,
number theory
1400
x13321
1183C
Computer Game
binary search
,
math
1400
x13640
1697C
awoo's Favorite Problem
binary search
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
strings
,
two pointers
1400
x13922
1452B
Toy Blocks
binary search
,
greedy
,
math
,
sortings
1400
x14427
1443C
The Delivery Dilemma
binary search
,
greedy
,
sortings
1400
x14938
1551B2
Wonderful Coloring - 2
binary search
,
constructive algorithms
,
data structures
,
greedy
1400
x15032
1628A
Meximum Array
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
,
two pointers
1400
x15180
1354C1
Simple Polygon Embedding
binary search
,
geometry
,
math
,
ternary search
1400
x15314
1701C
Schedule Management
binary search
,
greedy
,
implementation
,
two pointers
1400
x15689
670D1
Magic Powder - 1
binary search
,
brute force
,
implementation
1400
x15936
1535C
Unstable String
binary search
,
dp
,
greedy
,
implementation
,
strings
,
two pointers
1400
x16060
1624D
Palindromes Coloring
binary search
,
greedy
,
sortings
,
strings
1400
x16222
816B
Karen and Coffee
binary search
,
data structures
,
implementation
1400
x16379
1490E
Accidental Victory
binary search
,
data structures
,
greedy
1400
x18347
1201C
Maximum Median
binary search
,
greedy
,
math
,
sortings
1400
x21301
1324D
Pair of Topics
binary search
,
data structures
,
sortings
,
two pointers
1400
x26675
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x47620
181B
Number of Triplets
binary search
,
brute force
1300
x2887
161A
Dress'em in Vests!
binary search
,
brute force
,
greedy
,
two pointers
1300
x4673
152B
Steps
binary search
,
implementation
1300
x6320
932B
Recursive Queries
binary search
,
data structures
,
dfs and similar
1300
x7788
996B
World Cup
binary search
,
math
1300
x8847
1315B
Homecoming
binary search
,
dp
,
greedy
,
strings
1300
x8959
1737B
Ela's Fitness and the Luxury Number
binary search
,
implementation
,
math
1300
x9166
1119B
Alyona and a Narrow Fridge
binary search
,
flows
,
greedy
,
sortings
1300
x9806
192A
Funky Numbers
binary search
,
brute force
,
implementation
1300
x10116
1870C
Colorful Table
binary search
,
data structures
,
dp
,
implementation
,
math
,
two pointers
1300
x10693
1807E
Interview
binary search
,
implementation
,
interactive
1300
x11806
1187B
Letters Shop
binary search
,
implementation
,
strings
1300
x11849
1076C
Meme Problem
binary search
,
math
1300
x12067
271B
Prime Matrix
binary search
,
brute force
,
math
,
number theory
1300
x12346
1794C
Scoring Subsequences
binary search
,
greedy
,
math
,
two pointers
1300
x12414
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