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#
Name
293E
Close Vertices
data structures
,
divide and conquer
,
trees
2700
x1270
452F
Permutation
data structures
,
divide and conquer
,
hashing
2700
x1366
715C
Digit Tree
dfs and similar
,
divide and conquer
,
dsu
,
trees
2700
x1939
383E
Vowels
combinatorics
,
divide and conquer
,
dp
2700
x2746
1425B
Blue and Red of Our Faculty!
divide and conquer
,
dp
2600
x273
232C
Doe Graphs
constructive algorithms
,
divide and conquer
,
dp
,
graphs
,
shortest paths
2600
x281
217C
Formurosa
divide and conquer
,
dp
,
expression parsing
2600
x312
1957F1
Frequency Mismatch (Easy Version)
binary search
,
data structures
,
divide and conquer
,
hashing
,
probabilities
,
trees
2600
x348
1905F
Field Should Not Be Empty
brute force
,
data structures
,
divide and conquer
2600
x458
1217F
Forced Online Queries Problem
data structures
,
divide and conquer
,
dsu
,
graphs
,
trees
2600
x541
1257G
Divisor Set
divide and conquer
,
fft
,
greedy
,
math
,
number theory
2600
x579
1680F
Lenient Vertex Cover
dfs and similar
,
divide and conquer
,
dsu
,
graphs
,
trees
2600
x630
1613F
Tree Coloring
combinatorics
,
divide and conquer
,
fft
2600
x667
1004F
Sonya and Bitwise OR
bitmasks
,
data structures
,
divide and conquer
2600
x704
809C
Find a car
combinatorics
,
divide and conquer
,
dp
2600
x730
1898F
Vova Escapes the Matrix
brute force
,
dfs and similar
,
divide and conquer
,
shortest paths
2600
x739
1373G
Pawns
data structures
,
divide and conquer
,
greedy
2600
x771
1466G
Song of the Sirens
combinatorics
,
divide and conquer
,
hashing
,
math
,
string suffix structures
,
strings
2600
x850
914G
Sum the Fibonacci
bitmasks
,
divide and conquer
,
dp
,
fft
,
math
2600
x897
1140F
Extending Set of Points
data structures
,
divide and conquer
,
dsu
2600
x1124
848C
Goodbye Souvenir
data structures
,
divide and conquer
2600
x1256
1793F
Rebrending
brute force
,
data structures
,
divide and conquer
,
implementation
2600
x1292
750E
New Year and Old Subsequence
data structures
,
divide and conquer
,
dp
,
matrices
2600
x1467
1439C
Greedy Shopping
binary search
,
data structures
,
divide and conquer
,
greedy
,
implementation
2600
x1678
1223F
Stack Exterminable Arrays
data structures
,
divide and conquer
,
dp
,
hashing
2600
x1951
662C
Binary Table
bitmasks
,
brute force
,
divide and conquer
,
dp
,
fft
,
math
2600
x1959
321E
Ciel and Gondolas
data structures
,
divide and conquer
,
dp
2600
x4543
1906K
Deck-Building Game
divide and conquer
,
math
2500
x264
117D
Not Quick Transformation
divide and conquer
,
math
2500
x330
1250M
SmartGarden
constructive algorithms
,
divide and conquer
2500
x352
1218E
Product Tuples
divide and conquer
,
fft
2500
x359
1139F
Dish Shopping
data structures
,
divide and conquer
2500
x368
68D
Half-decay tree
data structures
,
divide and conquer
,
dp
,
math
,
probabilities
2500
x450
1181E1
A Story of One Country (Easy)
brute force
,
divide and conquer
,
sortings
2500
x453
101E
Candies and Stones
divide and conquer
,
dp
2500
x477
1423H
Virus
data structures
,
divide and conquer
,
dsu
,
graphs
2500
x509
1186E
Vus the Cossack and a Field
divide and conquer
,
implementation
,
math
2500
x555
1808E2
Minibuses on Venus (medium version)
combinatorics
,
divide and conquer
,
dp
,
matrices
2500
x650
1903D2
Maximum And Queries (hard version)
bitmasks
,
divide and conquer
,
dp
,
greedy
2500
x712
1734F
Zeros and Ones
bitmasks
,
divide and conquer
,
dp
,
math
2500
x770
678F
Lena and Queries
data structures
,
divide and conquer
,
geometry
2500
x825
1625E1
Cats on the Upgrade (easy version)
brute force
,
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
graphs
,
trees
2500
x977
1716E
Swap and Maximum Block
bitmasks
,
data structures
,
dfs and similar
,
divide and conquer
,
dp
2500
x1022
1583F
Defender of Childhood Dreams
bitmasks
,
constructive algorithms
,
divide and conquer
2500
x1223
1438E
Yurii Can Do Everything
binary search
,
bitmasks
,
brute force
,
constructive algorithms
,
divide and conquer
,
two pointers
2500
x1292
1665E
MinimizOR
bitmasks
,
brute force
,
data structures
,
divide and conquer
,
greedy
,
implementation
,
two pointers
2500
x1428
1041F
Ray in the tube
data structures
,
divide and conquer
,
dp
,
math
2500
x1456
1418G
Three Occurrences
data structures
,
divide and conquer
,
hashing
,
two pointers
2500
x1465
660F
Bear and Bowling 4
binary search
,
data structures
,
divide and conquer
,
geometry
,
ternary search
2500
x1522
1175F
The Number of Subpermutations
brute force
,
data structures
,
divide and conquer
,
hashing
,
math
2500
x1567
1527E
Partition Game
binary search
,
data structures
,
divide and conquer
,
dp
2500
x2094
1100F
Ivan and Burgers
data structures
,
divide and conquer
,
greedy
,
math
2500
x2125
868F
Yet Another Minimization Problem
divide and conquer
,
dp
2500
x3429
1218D
Xor Spanning Tree
divide and conquer
,
fft
,
graphs
2400
x313
161C
Abracadabra
divide and conquer
2400
x638
1673F
Anti-Theft Road Planning
bitmasks
,
constructive algorithms
,
divide and conquer
,
greedy
,
interactive
,
math
2400
x770
1777F
Comfortably Numb
bitmasks
,
data structures
,
divide and conquer
,
strings
,
trees
2400
x823
1146E
Hot is Cold
bitmasks
,
data structures
,
divide and conquer
,
implementation
2400
x827
1902F
Trees and XOR Queries Again
data structures
,
dfs and similar
,
divide and conquer
,
graphs
,
implementation
,
math
,
trees
2400
x897
1969E
Unique Array
binary search
,
data structures
,
divide and conquer
,
dp
,
greedy
2400
x944
632F
Magic Matrix
brute force
,
divide and conquer
,
graphs
,
matrices
,
trees
2400
x1027
1619H
Permutation and Queries
brute force
,
data structures
,
divide and conquer
,
two pointers
2400
x1075
1750E
Bracket Cost
binary search
,
data structures
,
divide and conquer
,
dp
,
greedy
,
strings
2400
x1364
1096G
Lucky Tickets
divide and conquer
,
dp
,
fft
2400
x1383
914E
Palindromes in a Tree
bitmasks
,
data structures
,
divide and conquer
,
trees
2400
x1394
1848F
Vika and Wiki
binary search
,
bitmasks
,
combinatorics
,
divide and conquer
,
dp
,
math
2400
x1452
1174F
Ehab and the Big Finale
constructive algorithms
,
divide and conquer
,
graphs
,
implementation
,
interactive
,
trees
2400
x1453
1715E
Long Way Home
data structures
,
divide and conquer
,
dp
,
geometry
,
graphs
,
greedy
,
shortest paths
2400
x1614
990G
GCD Counting
divide and conquer
,
dp
,
dsu
,
number theory
,
trees
2400
x1735
1114F
Please, another Queries on Array?
bitmasks
,
data structures
,
divide and conquer
,
math
,
number theory
2400
x1815
1491E
Fib-tree
brute force
,
dfs and similar
,
divide and conquer
,
number theory
,
trees
2400
x2044
379F
New Year Tree
data structures
,
divide and conquer
,
trees
2400
x2118
1428F
Fruit Sequences
binary search
,
data structures
,
divide and conquer
,
dp
,
two pointers
2400
x2167
786C
Till I Collapse
data structures
,
divide and conquer
2400
x2524
632E
Thief in a Shop
divide and conquer
,
dp
,
fft
,
math
2400
x2581
1000F
One Occurrence
data structures
,
divide and conquer
2400
x3532
342E
Xenia and Tree
data structures
,
divide and conquer
,
trees
2400
x7669
97B
Superset
constructive algorithms
,
divide and conquer
2300
x804
1766E
Decomposition
binary search
,
brute force
,
data structures
,
divide and conquer
,
dp
,
two pointers
2300
x1134
1843F2
Omsk Metro (hard version)
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
math
,
trees
2300
x1480
1849E
Max to the Right of Min
binary search
,
data structures
,
divide and conquer
,
dp
,
dsu
,
two pointers
2300
x1519
1681F
Unique Occurrences
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
dsu
,
trees
2300
x1544
1748E
Yet Another Array Counting Problem
binary search
,
data structures
,
divide and conquer
,
dp
,
flows
,
math
,
trees
2300
x1738
960E
Alternating Tree
combinatorics
,
dfs and similar
,
divide and conquer
,
dp
,
probabilities
,
trees
2300
x1824
1601C
Optimal Insertion
data structures
,
divide and conquer
,
dp
,
greedy
,
sortings
2300
x1919
1408F
Two Different
constructive algorithms
,
divide and conquer
2300
x2263
1706E
Qpwoeirut and Vertices
binary search
,
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
greedy
,
trees
2300
x2377
1494D
Dogeforces
constructive algorithms
,
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
greedy
,
sortings
,
trees
2300
x2501
413E
Maze 2D
data structures
,
divide and conquer
2200
x670
1773B
BinCoin
binary search
,
divide and conquer
,
hashing
,
implementation
,
probabilities
,
trees
2200
x736
196C
Paint Tree
constructive algorithms
,
divide and conquer
,
geometry
,
sortings
,
trees
2200
x740
1921G
Mischievous Shooter
brute force
,
data structures
,
divide and conquer
,
dp
,
implementation
2200
x1132
627C
Package Delivery
data structures
,
divide and conquer
,
greedy
2200
x1151
1808E1
Minibuses on Venus (easy version)
combinatorics
,
divide and conquer
,
dp
2200
x1254
1918E
ace5 and Task Order
constructive algorithms
,
divide and conquer
,
implementation
,
interactive
,
probabilities
,
sortings
2200
x1566
1278E
Tests for problem D
constructive algorithms
,
dfs and similar
,
divide and conquer
,
trees
2200
x1737
1140E
Palindrome-less Arrays
combinatorics
,
divide and conquer
,
dp
2200
x1891
875D
High Cry
binary search
,
bitmasks
,
combinatorics
,
data structures
,
divide and conquer
2200
x1984
981E
Addition on Segments
bitmasks
,
data structures
,
divide and conquer
,
dp
2200
x2001
1295E
Permutation Separation
data structures
,
divide and conquer
2200
x2346
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22:07:56
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