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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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Problems
#
Name
1800C1
Powering the Hero (easy version)
data structures
,
greedy
1000
x23441
1800B
Count the Number of Pairs
greedy
,
strings
1000
x25049
1800A
Is It a Cat?
implementation
,
strings
800
x31321
1799H
Tree Cutting
bitmasks
,
dfs and similar
,
dp
3200
x279
1799G
Count Voting
combinatorics
,
dp
,
math
2600
x759
1799F
Halve or Subtract
binary search
,
brute force
,
dp
,
greedy
,
sortings
2700
x817
1799E
City Union
constructive algorithms
,
dfs and similar
,
dsu
,
geometry
,
greedy
,
implementation
,
math
2300
x1194
1799D2
Hot Start Up (hard version)
data structures
,
dp
2100
x2438
1799D1
Hot Start Up (easy version)
dp
1900
x4443
1799C
Double Lexicographically Minimum
greedy
,
strings
1700
x5787
1799B
Equalize by Divide
brute force
,
constructive algorithms
,
greedy
,
math
1200
x11306
1799A
Recent Actions
data structures
,
greedy
,
implementation
,
math
800
x11560
1798F
Gifts from Grandfather Ahmed
dp
,
math
,
number theory
2500
x491
1798E
Multitest Generator
brute force
,
dp
2300
x1589
1798D
Shocking Arrangement
constructive algorithms
,
greedy
,
math
1600
x9782
1798C
Candy Store
greedy
,
math
,
number theory
1700
x8150
1798B
Three Sevens
brute force
,
data structures
,
greedy
,
implementation
1000
x16527
1798A
Showstopper
greedy
,
implementation
,
sortings
800
x19646
1797F
Li Hua and Path
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
trees
3000
x351
1797E
Li Hua and Array
brute force
,
data structures
,
dsu
,
math
,
number theory
,
two pointers
2300
x1265
1797D
Li Hua and Tree
brute force
,
data structures
,
dfs and similar
,
dp
,
implementation
,
trees
1900
x3931
1797C
Li Hua and Chess
constructive algorithms
,
greedy
,
interactive
1600
x7595
1797B
Li Hua and Pattern
constructive algorithms
,
greedy
1100
x15885
1797A
Li Hua and Maze
constructive algorithms
,
flows
,
graphs
,
greedy
,
implementation
800
x17393
1796F
Strange Triples
brute force
,
math
,
number theory
2900
x171
1796E
Colored Subgraphs
dfs and similar
,
dp
,
games
,
greedy
,
trees
2500
x749
1796D
Maximum Subarray
data structures
,
dp
,
greedy
,
two pointers
2000
x4283
1796C
Maximum Set
binary search
,
math
1600
x10361
1796B
Asterisk-Minor Template
implementation
,
strings
1000
x16518
1796A
Typical Interview Problem
brute force
,
implementation
,
strings
800
x18819
1795G
Removal Sequences
bitmasks
,
dfs and similar
,
graphs
2700
x681
1795F
Blocking Chips
binary search
,
constructive algorithms
,
dfs and similar
,
greedy
,
trees
2400
x1104
1795E
Explosions?
binary search
,
data structures
,
dp
,
greedy
,
math
2200
x2005
1795D
Triangle Coloring
combinatorics
,
math
1600
x9077
1795C
Tea Tasting
binary search
,
data structures
,
implementation
1500
x12339
1795B
Ideal Point
brute force
,
geometry
,
greedy
900
x22003
1795A
Two Towers
brute force
,
implementation
,
strings
800
x23561
1794E
Labeling the Tree with Distances
data structures
,
dp
,
greedy
,
hashing
,
implementation
,
trees
2400
x1086
1794D
Counting Factorizations
combinatorics
,
divide and conquer
,
dp
,
math
,
number theory
1900
x3568
1794C
Scoring Subsequences
binary search
,
greedy
,
math
,
two pointers
1300
x13694
1794B
Not Dividing
constructive algorithms
,
greedy
,
math
900
x22114
1794A
Prefix and Suffix Array
strings
800
x17113
1793F
Rebrending
brute force
,
data structures
,
divide and conquer
,
implementation
2600
x1366
1793E
Velepin and Marketing
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
2600
x1051
1793D
Moscow Gorillas
binary search
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1800
x6082
1793C
Dora and Search
constructive algorithms
,
data structures
,
two pointers
1200
x20124
1793B
Fedya and Array
constructive algorithms
,
math
1100
x15764
1793A
Yet Another Promotion
greedy
,
math
800
x18009
1792F2
Graph Coloring (hard version)
brute force
,
combinatorics
,
divide and conquer
,
dp
,
fft
,
graphs
2900
x389
1792F1
Graph Coloring (easy version)
combinatorics
,
dp
,
graphs
2700
x712
1792E
Divisors and Table
brute force
,
dfs and similar
,
dp
,
number theory
2400
x1382
1792D
Fixed Prefix Permutations
binary search
,
bitmasks
,
data structures
,
hashing
,
math
,
sortings
1700
x6235
1792C
Min Max Sort
binary search
,
brute force
,
greedy
,
math
,
two pointers
1500
x14047
1792B
Stand-up Comedian
greedy
,
math
1200
x21274
1792A
GamingForces
greedy
,
sortings
800
x28026
1791G2
Teleporters (Hard Version)
binary search
,
greedy
,
sortings
1900
x4764
1791G1
Teleporters (Easy Version)
greedy
,
sortings
1100
x22459
1791F
Range Update Point Query
binary search
,
brute force
,
data structures
1500
x12354
1791E
Negatives and Positives
dp
,
greedy
,
sortings
1100
x28133
1791D
Distinct Split
brute force
,
greedy
,
strings
1000
x30278
1791C
Prepend and Append
implementation
,
two pointers
800
x44914
1791B
Following Directions
geometry
,
implementation
800
x44009
1791A
Codeforces Checking
implementation
,
strings
800
x59986
1790G
Tokens on Graph
constructive algorithms
,
dfs and similar
,
graphs
,
shortest paths
2300
x1119
1790F
Timofey and Black-White Tree
brute force
,
dfs and similar
,
divide and conquer
,
graphs
,
greedy
,
math
,
shortest paths
,
trees
2100
x3331
1790E
Vlad and a Pair of Numbers
bitmasks
,
constructive algorithms
1400
x15061
1790D
Matryoshkas
data structures
,
greedy
,
sortings
1200
x20027
1790C
Premutation
brute force
,
implementation
,
math
1000
x23779
1790B
Taisia and Dice
greedy
,
greedy
,
math
800
x27329
1790A
Polycarp and the Day of Pi
implementation
,
math
,
strings
800
x36912
1789F
Serval and Brain Power
bitmasks
,
brute force
,
dp
,
greedy
,
implementation
,
strings
2700
x713
1789E
Serval and Music Game
brute force
,
dp
,
implementation
,
math
,
number theory
2500
x815
1789D
Serval and Shift-Shift-Shift
bitmasks
,
brute force
,
constructive algorithms
,
implementation
2200
x1664
1789C
Serval and Toxel's Arrays
combinatorics
,
dp
,
implementation
,
math
1500
x8515
1789B
Serval and Inversion Magic
brute force
,
implementation
,
strings
,
two pointers
800
x16141
1789A
Serval and Mocha's Array
brute force
,
math
,
number theory
800
x18948
1788F
XOR, Tree, and Queries
bitmasks
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
trees
2500
x834
1788E
Sum Over Zero
data structures
,
dfs and similar
,
dp
2200
x2659
1788D
Moving Dots
binary search
,
brute force
,
combinatorics
,
math
,
two pointers
2000
x3897
1788C
Matching Numbers
constructive algorithms
,
greedy
,
math
1300
x17155
1788B
Sum of Two Numbers
constructive algorithms
,
greedy
,
implementation
,
math
,
probabilities
1100
x19970
1788A
One and Two
brute force
,
implementation
,
math
800
x30439
1787I
Treasure Hunt
data structures
,
divide and conquer
,
two pointers
3400
x166
1787H
Codeforces Scoreboard
binary search
,
data structures
,
dp
,
geometry
3300
x229
1787G
Colorful Tree Again
brute force
,
data structures
,
trees
3000
x433
1787F
Inverse Transformation
constructive algorithms
,
implementation
,
math
2500
x675
1787E
The Harmonization of XOR
bitmasks
,
constructive algorithms
,
greedy
,
math
2100
x2330
1787D
Game on Axis
combinatorics
,
dfs and similar
,
dsu
,
graphs
,
implementation
1900
x3384
1787C
Remove the Bracket
dp
,
greedy
,
math
1600
x7042
1787B
Number Factorization
greedy
,
math
,
number theory
1100
x13200
1787A
Exponential Equation
constructive algorithms
,
math
800
x19144
1786B
Cake Assembly Line
brute force
,
sortings
1300
x8946
1786A2
Alternating Deck (hard version)
implementation
800
x11394
1786A1
Non-alternating Deck (easy version)
implementation
800
x14023
1784F
Minimums or Medians
3400
x184
1784E
Infinite Game
brute force
,
combinatorics
,
dp
,
games
,
probabilities
3100
x334
1784D
Wooden Spoon
combinatorics
,
dp
2400
x1016
1784C
Monsters (hard version)
data structures
,
greedy
2200
x1650
1784B
Letter Exchange
constructive algorithms
1900
x3323
1784A
Monsters (easy version)
brute force
,
greedy
1000
x15078
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