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Kotlin Heroes: Episode 11
17:02:10
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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
1439A1
Binary Table (Easy Version)
constructive algorithms
,
implementation
1500
x9366
1438F
Olha and Igor
interactive
,
probabilities
,
trees
3000
x635
1438E
Yurii Can Do Everything
binary search
,
bitmasks
,
brute force
,
constructive algorithms
,
divide and conquer
,
two pointers
2500
x1342
1438D
Powerful Ksenia
bitmasks
,
constructive algorithms
,
math
2200
x4180
1438C
Engineer Artem
2-sat
,
chinese remainder theorem
,
constructive algorithms
,
fft
,
flows
2000
x10461
1437G
Death DBMS
data structures
,
string suffix structures
,
strings
,
trees
2600
x1000
1437F
Emotional Fishermen
combinatorics
,
dp
,
math
,
two pointers
2600
x1264
1437E
Make It Increasing
binary search
,
constructive algorithms
,
data structures
,
dp
,
implementation
2200
x3447
1437D
Minimal Height Tree
graphs
,
greedy
,
shortest paths
,
trees
1600
x12732
1437C
Chef Monocarp
dp
,
flows
,
graph matchings
,
greedy
,
math
,
sortings
1800
x10481
1436F
Sum Over Subsets
combinatorics
,
math
,
number theory
2800
x525
1436E
Complicated Computations
binary search
,
data structures
,
two pointers
2400
x2264
1436D
Bandit in a City
binary search
,
dfs and similar
,
graphs
,
greedy
,
trees
1900
x6056
1436C
Binary Search
binary search
,
combinatorics
1500
x10800
1434E
A Convex Game
dsu
,
games
3500
x176
1433G
Reducing Delivery Cost
brute force
,
graphs
,
shortest paths
2100
x4331
1433F
Zero Remainder Sum
dp
2100
x6046
1431J
Zero-XOR Array
*special problem
,
dp
3400
x44
1431I
Cyclic Shifts
*special problem
,
strings
2900
x46
1431H
Rogue-like Game
*special problem
,
brute force
,
greedy
,
two pointers
2600
x67
1431G
Number Deletion Game
*special problem
,
dp
,
games
,
greedy
2100
x189
1431F
Neural Network Problem
*special problem
,
binary search
,
greedy
2100
x156
1431E
Chess Match
*special problem
2000
x221
1431D
Used Markers
*special problem
,
greedy
1500
x455
1431C
Black Friday
*special problem
,
implementation
1600
x704
1431B
Polycarp and the Language of Gods
*special problem
,
implementation
,
two pointers
1400
x1010
1430G
Yet Another DAG Problem
bitmasks
,
dfs and similar
,
dp
,
flows
,
graphs
,
math
2600
x710
1430F
Realistic Gameplay
dp
,
greedy
2600
x912
1430E
String Reversal
data structures
,
greedy
,
strings
1900
x6488
1430D
String Deletion
binary search
,
data structures
,
greedy
,
two pointers
1700
x8795
1428H
Rotary Laser Lock
binary search
,
interactive
3500
x108
1428G2
Lucky Numbers (Hard Version)
dp
,
greedy
3000
x632
1428G1
Lucky Numbers (Easy Version)
dp
,
greedy
2900
x568
1428F
Fruit Sequences
binary search
,
data structures
,
divide and conquer
,
dp
,
two pointers
2400
x2301
1428E
Carrots for Rabbits
binary search
,
data structures
,
greedy
,
math
,
sortings
2200
x3651
1428D
Bouncing Boomerangs
constructive algorithms
,
greedy
,
implementation
1900
x4483
1427H
Prison Break
binary search
,
games
,
geometry
,
ternary search
3500
x77
1427G
One Billion Shades of Grey
flows
,
graphs
3300
x345
1427F
Boring Card Game
data structures
,
greedy
,
trees
3200
x313
1427E
Xum
bitmasks
,
constructive algorithms
,
math
,
matrices
,
number theory
2500
x1409
1427D
Unshuffling a Deck
constructive algorithms
,
implementation
2000
x3504
1427C
The Hard Work of Paparazzi
dp
2000
x5664
1427B
Chess Cheater
greedy
,
implementation
,
sortings
1400
x10895
1426F
Number of Subsequences
combinatorics
,
dp
,
strings
2000
x5351
1426E
Rock, Paper, Scissors
brute force
,
constructive algorithms
,
flows
,
greedy
,
math
1800
x7416
1426D
Non-zero Segments
constructive algorithms
,
data structures
,
greedy
,
sortings
1500
x15987
1425I
Impressive Harvesting of The Orchard
data structures
2800
x237
1425F
Flamingoes of Mystery
interactive
1400
x5711
1425E
Excitation of Atoms
greedy
,
implementation
2200
x939
1425D
Danger of Mad Snakes
combinatorics
,
dp
,
math
2300
x835
1425C
Captain of Knights
math
3100
x41
1425B
Blue and Red of Our Faculty!
divide and conquer
,
dp
2600
x281
1425A
Arena of Greed
games
,
greedy
1400
x6523
1424M
Ancient Language
graphs
,
sortings
2200
x531
1423N
BubbleSquare Tokens
3500
x151
1423M
Milutin's Plums
interactive
2800
x154
1423L
Light switches
meet-in-the-middle
2600
x466
1423K
Lonely Numbers
binary search
,
math
,
number theory
,
two pointers
1600
x4840
1423J
Bubble Cup hypothesis
bitmasks
,
constructive algorithms
,
dp
,
math
2400
x779
1423I
Lookup Tables
bitmasks
3000
x106
1423H
Virus
data structures
,
divide and conquer
,
dsu
,
graphs
2500
x524
1423G
Growing flowers
data structures
3500
x214
1423F
Coins
math
2700
x379
1423E
5G Antenna Towers
geometry
2700
x76
1423D
Does anyone else hate the wind?
3100
x39
1423C
Dušan's Railway
divide and conquer
,
graphs
,
trees
3500
x141
1423B
Valuable Paper
binary search
,
flows
,
graph matchings
,
graphs
1900
x1808
1423A
Wakanda Forever
3500
x80
1422F
Boring Queries
data structures
,
math
,
number theory
2700
x1026
1422E
Minlexes
dp
,
greedy
,
implementation
,
strings
2700
x749
1422D
Returning Home
graphs
,
shortest paths
,
sortings
2300
x2782
1422C
Bargain
combinatorics
,
dp
,
math
1700
x8223
1421E
Swedish Heroes
brute force
,
dp
,
implementation
2700
x697
1421D
Hexagons
brute force
,
constructive algorithms
,
greedy
,
implementation
,
math
,
shortest paths
1900
x4159
1421C
Palindromifier
constructive algorithms
,
strings
1400
x12791
1420E
Battle Lemmings
dp
,
greedy
2500
x929
1420D
Rescue Nibel!
combinatorics
,
data structures
,
sortings
1800
x7579
1420C2
Pokémon Army (hard version)
data structures
,
divide and conquer
,
dp
,
greedy
,
implementation
2100
x4682
1419F
Rain of Fire
binary search
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
implementation
2800
x491
1419E
Decryption
constructive algorithms
,
implementation
,
math
,
number theory
2100
x3267
1419D2
Sage's Birthday (hard version)
binary search
,
brute force
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
1500
x15568
1419C
Killjoy
greedy
,
implementation
,
math
1500
x15367
1418G
Three Occurrences
data structures
,
divide and conquer
,
hashing
,
two pointers
2500
x1921
1418F
Equal Product
data structures
,
math
,
number theory
,
two pointers
3000
x368
1418E
Expected Damage
binary search
,
combinatorics
,
probabilities
2400
x1859
1418D
Trash Problem
data structures
,
implementation
2100
x4356
1418C
Mortal Kombat Tower
dp
,
graphs
,
greedy
,
shortest paths
1500
x19831
1416F
Showing Off
flows
,
graph matchings
,
greedy
,
implementation
3300
x462
1416E
Split
binary search
,
data structures
,
dp
,
greedy
3200
x293
1416D
Graph and Queries
data structures
,
dsu
,
graphs
,
implementation
,
trees
2600
x2052
1416C
XOR Inverse
bitmasks
,
data structures
,
divide and conquer
,
dp
,
greedy
,
math
,
sortings
,
strings
,
trees
2000
x4407
1416B
Make Them Equal
constructive algorithms
,
greedy
,
math
2000
x6124
1416A
k-Amazing Numbers
binary search
,
data structures
,
implementation
,
two pointers
1500
x12514
1415F
Cakes for Clones
dp
2900
x484
1415E
New Game Plus!
constructive algorithms
,
greedy
,
math
2200
x2716
1415D
XOR-gun
bitmasks
,
brute force
,
constructive algorithms
2000
x5405
1415C
Bouncing Ball
brute force
,
dp
,
implementation
1400
x10890
1413F
Roads and Ramen
data structures
,
trees
2800
x776
1413E
Solo mid Oracle
greedy
,
math
,
ternary search
2100
x2021
1413D
Shurikens
data structures
,
greedy
,
implementation
1700
x6493
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