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Kotlin Heroes: Episode 11
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combine-tags-by-or
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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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Custom test
Problems
#
Name
1684A
Digit Minimization
constructive algorithms
,
games
,
math
,
strings
800
x23805
1682F
MCMF?
data structures
,
flows
,
graphs
,
greedy
,
sortings
,
two pointers
2700
x312
1682E
Unordered Swaps
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
math
,
sortings
,
trees
2700
x595
1682D
Circular Spanning Tree
constructive algorithms
,
implementation
,
trees
2000
x3297
1682C
LIS or Reverse LIS?
constructive algorithms
,
greedy
,
implementation
,
math
1400
x14696
1682B
AND Sorting
bitmasks
,
constructive algorithms
,
sortings
1100
x18447
1682A
Palindromic Indices
greedy
,
strings
800
x19261
1681F
Unique Occurrences
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
dsu
,
trees
2300
x1735
1681E
Labyrinth Adventures
data structures
,
dp
,
matrices
,
shortest paths
2600
x794
1681D
Required Length
brute force
,
dfs and similar
,
dp
,
hashing
,
shortest paths
1700
x9587
1681C
Double Sort
implementation
,
sortings
1200
x17314
1681B
Card Trick
implementation
,
math
800
x20071
1681A
Game with Cards
games
,
greedy
800
x20945
1680F
Lenient Vertex Cover
dfs and similar
,
divide and conquer
,
dsu
,
graphs
,
trees
2600
x661
1680E
Moving Chips
bitmasks
,
dp
,
greedy
2000
x3778
1680D
Dog Walking
brute force
,
greedy
,
math
2400
x1164
1680C
Binary String
binary search
,
greedy
,
strings
,
two pointers
1600
x9893
1680B
Robots
implementation
800
x18286
1680A
Minimums and Maximums
brute force
,
math
800
x21525
1679F
Formalism for Formalism
bitmasks
,
dp
,
math
2600
x536
1679E
Typical Party in Dorm
bitmasks
,
combinatorics
,
dp
,
strings
2400
x1152
1679D
Toss a Coin to Your Graph...
binary search
,
dfs and similar
,
dp
,
graphs
1900
x4790
1679C
Rooks Defenders
data structures
,
implementation
1400
x10275
1679B
Stone Age Problem
data structures
,
implementation
1200
x18336
1679A
AvtoBus
brute force
,
greedy
,
math
,
number theory
900
x23945
1678B2
Tokitsukaze and Good 01-String (hard version)
dp
,
greedy
,
implementation
1800
x6588
1678B1
Tokitsukaze and Good 01-String (easy version)
implementation
800
x15905
1678A
Tokitsukaze and All Zero Sequence
implementation
800
x18132
1677F
Tokitsukaze and Gems
dp
,
math
3500
x93
1677E
Tokitsukaze and Beautiful Subsegments
data structures
2900
x546
1677D
Tokitsukaze and Permutations
dp
,
math
2500
x1253
1677C
Tokitsukaze and Two Colorful Tapes
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
1900
x3556
1677B
Tokitsukaze and Meeting
data structures
,
implementation
,
math
1700
x4166
1677A
Tokitsukaze and Strange Inequality
brute force
,
data structures
,
dp
1600
x8403
1676H2
Maximum Crossings (Hard Version)
data structures
,
divide and conquer
,
sortings
1500
x10685
1676H1
Maximum Crossings (Easy Version)
brute force
1400
x13974
1676G
White-Black Balanced Subtrees
dfs and similar
,
dp
,
graphs
,
trees
1300
x15536
1676F
Longest Strike
data structures
,
greedy
,
implementation
,
sortings
,
two pointers
1300
x16652
1676E
Eating Queries
binary search
,
greedy
,
sortings
1100
x26143
1676D
X-Sum
brute force
,
greedy
,
implementation
1000
x25055
1676C
Most Similar Words
brute force
,
greedy
,
implementation
,
implementation
,
math
,
strings
800
x30034
1676B
Equal Candies
greedy
,
math
,
sortings
800
x48088
1676A
Lucky?
implementation
800
x63042
1675G
Sorting Pancakes
dp
2300
x1768
1675F
Vlad and Unfinished Business
dfs and similar
,
dp
,
greedy
,
trees
1800
x5293
1675E
Replace With the Previous, Minimize
dsu
,
greedy
,
strings
1500
x10578
1675D
Vertical Paths
graphs
,
implementation
,
trees
1300
x12991
1675C
Detective Task
implementation
1100
x18183
1675B
Make It Increasing
greedy
,
implementation
900
x26854
1675A
Food for Animals
greedy
,
math
800
x32872
1674G
Remove Directed Edges
dfs and similar
,
dp
,
graphs
2000
x2485
1674F
Desktop Rearrangement
data structures
,
greedy
,
implementation
1800
x5025
1674E
Breaking the Wall
binary search
,
brute force
,
constructive algorithms
,
greedy
,
math
2000
x6391
1674D
A-B-C Sort
constructive algorithms
,
implementation
,
sortings
1200
x16275
1674C
Infinite Replacement
combinatorics
,
implementation
,
strings
1000
x23546
1674B
Dictionary
combinatorics
,
math
800
x26222
1674A
Number Transformation
constructive algorithms
,
math
800
x26223
1673F
Anti-Theft Road Planning
bitmasks
,
constructive algorithms
,
divide and conquer
,
greedy
,
interactive
,
math
2400
x815
1673E
Power or XOR?
bitmasks
,
combinatorics
,
math
,
number theory
2500
x704
1673D
Lost Arithmetic Progression
combinatorics
,
math
,
number theory
1900
x3297
1673C
Palindrome Basis
brute force
,
dp
,
math
,
number theory
1500
x12666
1673B
A Perfectly Balanced String?
brute force
,
greedy
,
strings
1100
x15106
1673A
Subtle Substring Subtraction
games
,
greedy
,
strings
800
x18420
1672I
PermutationForces
data structures
,
greedy
3000
x172
1672H
Zigu Zagu
constructive algorithms
,
data structures
,
greedy
2700
x945
1672G
Cross Xor
constructive algorithms
,
graphs
,
math
,
matrices
3200
x321
1672F2
Checker for Array Shuffling
constructive algorithms
,
dfs and similar
,
graphs
2800
x804
1672F1
Array Shuffling
constructive algorithms
,
graphs
,
greedy
2000
x3080
1672E
notepad.exe
binary search
,
constructive algorithms
,
greedy
,
interactive
2200
x2230
1672D
Cyclic Rotation
constructive algorithms
,
greedy
,
implementation
,
two pointers
1700
x6214
1672C
Unequal Array
constructive algorithms
,
greedy
,
implementation
1100
x13197
1672B
I love AAAB
constructive algorithms
,
implementation
800
x15786
1672A
Log Chopping
games
,
implementation
,
math
800
x16051
1671F
Permutation Counting
brute force
,
combinatorics
,
dp
,
fft
,
math
2700
x332
1671E
Preorder
combinatorics
,
divide and conquer
,
dp
,
dsu
,
hashing
,
sortings
,
trees
2100
x2737
1671D
Insert a Progression
brute force
,
constructive algorithms
,
greedy
1600
x7628
1671C
Dolce Vita
binary search
,
brute force
,
greedy
,
math
1200
x17074
1671B
Consecutive Points Segment
brute force
,
math
,
sortings
1000
x18498
1671A
String Building
implementation
800
x20429
1670F
Jee, You See?
bitmasks
,
combinatorics
,
dp
2400
x970
1670E
Hemose on the Tree
bitmasks
,
constructive algorithms
,
dfs and similar
,
trees
2200
x1741
1670D
Very Suspicious
binary search
,
brute force
,
geometry
,
greedy
,
implementation
,
math
1700
x5097
1670C
Where is the Pizza?
data structures
,
dfs and similar
,
dsu
,
graphs
,
implementation
,
math
1400
x9919
1670B
Dorms War
brute force
,
implementation
,
strings
1100
x12638
1670A
Prof. Slim
greedy
,
implementation
,
sortings
800
x15401
1669H
Maximal AND
bitmasks
,
greedy
,
math
1300
x18365
1669G
Fall Down
dfs and similar
,
implementation
1200
x18184
1669F
Eating Candies
binary search
,
data structures
,
greedy
,
two pointers
1100
x25537
1669E
2-Letter Strings
data structures
,
math
,
strings
1200
x17796
1669D
Colorful Stamp
implementation
1100
x22126
1669C
Odd/Even Increments
greedy
,
greedy
,
implementation
,
math
800
x34498
1669B
Triple
implementation
,
sortings
800
x42888
1669A
Division?
implementation
800
x62366
1668B
Social Distance
greedy
,
math
,
sortings
900
x16602
1668A
Direction Change
implementation
,
math
800
x16288
1667F
Yin Yang
implementation
3500
x99
1667E
Centroid Probabilities
combinatorics
,
dp
,
fft
,
math
3000
x646
1667D
Edge Elimination
constructive algorithms
,
dfs and similar
,
dp
,
trees
2900
x662
1667C
Half Queen Cover
constructive algorithms
,
math
2400
x1569
1667B
Optimal Partition
data structures
,
dp
2100
x3676
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