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Kotlin Heroes: Episode 11
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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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Standings
Custom test
Problems
#
Name
986F
Oppa Funcan Style Remastered
graphs
,
math
,
number theory
,
shortest paths
3300
x612
986E
Prince's Problem
brute force
,
data structures
,
math
,
number theory
,
trees
2800
x794
986D
Perfect Encoding
fft
,
math
3100
x330
986C
AND Graph
bitmasks
,
dfs and similar
,
dsu
,
graphs
2500
x2444
986B
Petr and Permutations
combinatorics
,
math
1800
x4646
986A
Fair
graphs
,
greedy
,
number theory
,
shortest paths
1600
x6894
985G
Team Players
combinatorics
2700
x517
985F
Isomorphic Strings
hashing
,
strings
2300
x1853
985E
Pencils and Boxes
binary search
,
data structures
,
dp
,
greedy
,
two pointers
2100
x3643
985D
Sand Fortress
binary search
,
constructive algorithms
,
math
2100
x2551
985C
Liebig's Barrels
greedy
1500
x5764
983E
NN country
binary search
,
data structures
,
trees
2800
x936
983D
Arkady and Rectangles
data structures
3300
x388
983C
Elevator
dp
,
graphs
,
shortest paths
2400
x832
983B
XOR-pyramid
dp
1800
x5498
983A
Finite or not?
implementation
,
math
1700
x4543
982F
The Meeting Place Cannot Be Changed
dfs and similar
,
graphs
2700
x190
982E
Billiard
geometry
,
number theory
2600
x705
982D
Shark
brute force
,
data structures
,
dsu
,
trees
1900
x2297
982C
Cut 'em all!
dfs and similar
,
dp
,
graphs
,
greedy
,
trees
1500
x11467
981H
K Paths
combinatorics
,
data structures
,
dp
,
fft
,
math
3100
x270
981G
Magic multisets
data structures
2500
x685
981F
Round Marriage
binary search
,
graph matchings
,
greedy
2500
x783
981E
Addition on Segments
bitmasks
,
data structures
,
divide and conquer
,
dp
2200
x2088
981D
Bookshelves
bitmasks
,
dp
,
greedy
1900
x3241
981C
Useful Decomposition
implementation
,
trees
1400
x5391
980F
Cactus to Tree
dp
,
graphs
,
trees
2900
x196
980E
The Number Games
data structures
,
greedy
,
trees
2200
x1922
980D
Perfect Groups
dp
,
math
,
number theory
2100
x2663
980C
Posterized
games
,
greedy
1700
x3785
980B
Marlin
constructive algorithms
1600
x4685
979E
Kuro and Topological Parity
dp
2400
x631
979D
Kuro and GCD and XOR and SUM
binary search
,
bitmasks
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
math
,
number theory
,
strings
,
trees
2200
x1812
979C
Kuro and Walking Route
dfs and similar
,
trees
1600
x6251
979B
Treasure Hunt
greedy
1800
x4412
978G
Petya's Exams
greedy
,
implementation
,
sortings
1700
x4351
978F
Mentors
binary search
,
data structures
,
implementation
1500
x8268
978E
Bus Video System
combinatorics
,
math
1400
x9532
978D
Almost Arithmetic Progression
brute force
,
implementation
,
math
1500
x8725
977F
Consecutive Subsequence
dp
1700
x18838
977E
Cyclic Components
dfs and similar
,
dsu
,
graphs
1500
x20548
977D
Divide by three, multiply by two
dfs and similar
,
math
,
sortings
1400
x18302
976F
Minimal k-covering
flows
,
graphs
2500
x579
976E
Well played!
greedy
,
sortings
2100
x2396
976D
Degree Set
constructive algorithms
,
graphs
,
implementation
2500
x685
976C
Nested Segments
greedy
,
implementation
,
sortings
1500
x6864
975E
Hag's Khashba
geometry
2600
x307
975D
Ghosts
geometry
,
math
2000
x2181
975C
Valhalla Siege
binary search
1400
x9637
965E
Short Code
data structures
,
dp
,
greedy
,
strings
,
trees
2200
x1440
965D
Single-use Stones
binary search
,
flows
,
greedy
,
two pointers
1900
x3079
965C
Greedy Arkady
math
2000
x2098
963E
Circles of Waiting
math
3100
x547
963D
Frequency of String
hashing
,
string suffix structures
,
strings
2500
x2008
963C
Cutting Rectangle
brute force
,
math
,
number theory
2600
x575
963B
Destruction of a Tree
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
2000
x2792
963A
Alternating Sum
math
,
number theory
1800
x3296
962G
Visible Black Areas
data structures
,
dsu
,
geometry
,
trees
2800
x182
962F
Simple Cycles Edges
dfs and similar
,
graphs
,
trees
2400
x1331
962E
Byteland, Berland and Disputed Cities
constructive algorithms
,
greedy
2200
x1066
962D
Merge Equals
data structures
,
implementation
1600
x6867
962C
Make a Square
brute force
,
implementation
,
math
1400
x7825
961G
Partitions
combinatorics
,
math
,
number theory
2700
x1350
961F
k-substrings
binary search
,
hashing
,
string suffix structures
2700
x785
961E
Tufurama
data structures
1900
x3602
961D
Pair Of Lines
geometry
2000
x4260
961C
Chessboard
bitmasks
,
brute force
,
implementation
1400
x5297
960H
Santa's Gift
data structures
,
trees
3100
x274
960G
Bandit Blues
combinatorics
,
dp
,
fft
,
math
2900
x1065
960F
Pathwalks
data structures
,
dp
,
graphs
2100
x2962
960E
Alternating Tree
combinatorics
,
dfs and similar
,
divide and conquer
,
dp
,
probabilities
,
trees
2300
x1930
960D
Full Binary Tree Queries
brute force
,
implementation
,
trees
2100
x1880
960C
Subsequence Counting
bitmasks
,
constructive algorithms
,
greedy
,
implementation
1700
x3926
960B
Minimize the error
data structures
,
greedy
,
sortings
1500
x7926
959F
Mahmoud and Ehab and yet another xor task
bitmasks
,
dp
,
math
,
matrices
2400
x2086
959E
Mahmoud and Ehab and the xor-MST
bitmasks
,
dp
,
graphs
,
implementation
,
math
1900
x3398
959D
Mahmoud and Ehab and another array construction task
constructive algorithms
,
greedy
,
math
,
number theory
1900
x3089
959C
Mahmoud and Ehab and the wrong algorithm
constructive algorithms
,
trees
1500
x5770
958F3
Lightsabers (hard)
fft
2600
x694
958F2
Lightsabers (medium)
binary search
,
two pointers
1800
x1230
958F1
Lightsabers (easy)
implementation
1500
x1611
958E3
Guard Duty (hard)
geometry
2700
x188
958E2
Guard Duty (medium)
binary search
,
dp
,
greedy
,
sortings
2200
x945
958E1
Guard Duty (easy)
brute force
,
geometry
,
greedy
,
math
1600
x1508
958D2
Hyperspace Jump (hard)
2700
x87
958D1
Hyperspace Jump (easy)
expression parsing
,
math
1400
x2066
958C3
Encryption (hard)
data structures
,
dp
2500
x542
958C2
Encryption (medium)
dp
2000
x1249
958B2
Maximum Control (medium)
data structures
,
dfs and similar
,
graphs
,
greedy
,
trees
2200
x641
958A3
Death Stars (hard)
3100
x45
958A2
Death Stars (medium)
hashing
,
strings
2000
x904
958A1
Death Stars (easy)
implementation
1400
x1660
955F
Heaps
dp
,
trees
2600
x374
955E
Icicles
2900
x94
955D
Scissors
brute force
,
strings
2600
x479
955C
Sad powers
binary search
,
math
,
number theory
2100
x2700
955B
Not simply beatiful strings
implementation
1400
x4820
954I
Yet Another String Matching Problem
fft
,
math
2200
x1020
954H
Path Counting
combinatorics
,
dp
2500
x584
954G
Castle Defense
binary search
,
data structures
,
greedy
,
two pointers
2000
x2141
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