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Kotlin Heroes: Practice 6
6 days
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Difficulty:
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dsu
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
1434E
A Convex Game
dsu
,
games
3500
x57
750H
New Year and Snowy Grid
dfs and similar
,
dsu
,
graphs
,
interactive
3500
x96
1305G
Kuroni and Antihype
bitmasks
,
brute force
,
dp
,
dsu
,
graphs
3500
x269
627F
Island Puzzle
dfs and similar
,
dsu
,
graphs
,
trees
3400
x120
936E
Iqea
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
shortest paths
,
trees
3400
x130
1254E
Send Tree to Charlie
combinatorics
,
dfs and similar
,
dsu
,
trees
3300
x141
1307F
Cow and Vacation
dfs and similar
,
dsu
,
trees
3300
x281
650E
Clockwork Bomb
data structures
,
dfs and similar
,
dsu
,
greedy
,
trees
3200
x364
1012E
Cycle sort
dsu
,
math
3100
x141
571D
Campus
binary search
,
data structures
,
dsu
,
trees
3100
x349
896E
Welcome home, Chtholly
data structures
,
dsu
3100
x464
696E
...Wait for it...
data structures
,
dsu
,
trees
3000
x291
603E
Pastoral Oddities
data structures
,
divide and conquer
,
dsu
,
math
,
trees
3000
x437
1468B
Bakery
data structures
,
dsu
2900
x87
1051G
Distinctification
data structures
,
dsu
,
greedy
2900
x143
763E
Timofey and our friends animals
data structures
,
divide and conquer
,
dsu
2900
x318
325D
Reclamation
dsu
2900
x318
938G
Shortest Path Queries
bitmasks
,
data structures
,
dsu
,
graphs
2900
x328
19E
Fairy
dfs and similar
,
divide and conquer
,
dsu
2900
x857
962G
Visible Black Areas
data structures
,
dsu
,
geometry
,
trees
2800
x74
1386C
Joker
*special problem
,
bitmasks
,
data structures
,
divide and conquer
,
dsu
2800
x163
217E
Alien DNA
data structures
,
dsu
,
trees
2800
x218
461D
Appleman and Complicated Task
dsu
,
math
2800
x284
1419F
Rain of Fire
binary search
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
implementation
2800
x317
1303F
Number of Components
dsu
,
implementation
2800
x353
325E
The Red Button
combinatorics
,
dfs and similar
,
dsu
,
graphs
,
greedy
2800
x379
516D
Drazil and Morning Exercise
dfs and similar
,
dp
,
dsu
,
trees
,
two pointers
2800
x696
471E
MUH and Lots and Lots of Segments
data structures
,
dsu
2700
x57
105D
Entertaining Geodetics
brute force
,
dsu
,
implementation
2700
x109
81E
Pairs
dfs and similar
,
dp
,
dsu
,
graphs
,
implementation
,
trees
2700
x192
1408G
Clusterization Counting
combinatorics
,
dp
,
dsu
,
fft
,
graphs
,
trees
2700
x464
444E
DZY Loves Planting
binary search
,
dsu
,
trees
2700
x470
715C
Digit Tree
dfs and similar
,
divide and conquer
,
dsu
,
trees
2700
x1145
13E
Holes
data structures
,
dsu
2700
x2386
374E
Inna and Babies
binary search
,
data structures
,
dsu
,
geometry
,
implementation
2600
x152
36E
Two Paths
constructive algorithms
,
dsu
,
graphs
,
implementation
2600
x261
1217F
Forced Online Queries Problem
data structures
,
divide and conquer
,
dsu
,
graphs
,
trees
2600
x268
1140F
Extending Set of Points
data structures
,
divide and conquer
,
dsu
2600
x448
196E
Opening Portals
dsu
,
graphs
,
shortest paths
2600
x480
811E
Vladik and Entertaining Flags
data structures
,
dsu
,
graphs
2600
x505
1400G
Mercenaries
bitmasks
,
brute force
,
combinatorics
,
dp
,
dsu
,
math
,
two pointers
2600
x526
85E
Guard Towers
binary search
,
dsu
,
geometry
,
graphs
,
sortings
2600
x555
1023F
Mobile Phone Network
dfs and similar
,
dsu
,
graphs
,
trees
2600
x574
1416D
Graph and Queries
data structures
,
dsu
,
graphs
,
implementation
,
trees
2600
x950
60D
Savior
brute force
,
dsu
,
math
2500
x243
1423H
Virus
data structures
,
divide and conquer
,
dsu
,
graphs
2500
x285
212D
Cutting a Fence
binary search
,
data structures
,
dsu
2500
x315
884E
Binary Matrix
dsu
2500
x429
1236E
Alice and the Unfair Game
binary search
,
data structures
,
dp
,
dsu
2500
x461
813F
Bipartite Checking
data structures
,
dsu
,
graphs
2500
x461
1120D
Power Tree
dfs and similar
,
dp
,
dsu
,
graphs
,
greedy
,
trees
2500
x528
687D
Dividing Kingdom II
brute force
,
data structures
,
dsu
,
graphs
,
sortings
2500
x627
778C
Peterson Polyglot
brute force
,
dfs and similar
,
dsu
,
hashing
,
strings
,
trees
2500
x675
1253F
Cheap Robot
binary search
,
dsu
,
graphs
,
shortest paths
,
trees
2500
x764
95E
Lucky Country
dp
,
dsu
,
graphs
2500
x781
875F
Royal Questions
dsu
,
graphs
,
greedy
2500
x835
1444C
Team-Building
data structures
,
dfs and similar
,
dsu
,
graphs
2500
x885
1361C
Johnny and Megan's Necklace
binary search
,
bitmasks
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
2500
x926
986C
AND Graph
bitmasks
,
dfs and similar
,
dsu
,
graphs
2500
x1434
1184E3
Daleks' Invasion (hard)
data structures
,
dsu
,
graphs
,
trees
2400
x312
1166F
Vicky's Delivery Service
data structures
,
dsu
,
graphs
,
hashing
2400
x429
209C
Trails and Glades
constructive algorithms
,
dsu
,
graphs
,
greedy
2400
x480
1044D
Deduction Queries
data structures
,
dsu
2400
x614
452E
Three strings
data structures
,
dsu
,
string suffix structures
,
strings
2400
x653
1107G
Vasya and Maximum Profit
binary search
,
constructive algorithms
,
data structures
,
dp
,
dsu
2400
x668
873F
Forbidden Indices
dsu
,
string suffix structures
,
strings
2400
x711
601D
Acyclic Organic Compounds
data structures
,
dfs and similar
,
dsu
,
hashing
,
strings
,
trees
2400
x797
1042F
Leaf Sets
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2400
x875
1027F
Session in BSU
binary search
,
dfs and similar
,
dsu
,
graph matchings
,
graphs
2400
x912
1463E
Plan of Lectures
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
implementation
,
sortings
,
trees
2400
x915
990G
GCD Counting
divide and conquer
,
dp
,
dsu
,
number theory
,
trees
2400
x950
679C
Bear and Square Grid
dfs and similar
,
dsu
,
implementation
2400
x990
653E
Bear and Forgotten Tree 2
dfs and similar
,
dsu
,
graphs
,
trees
2400
x994
1290C
Prefix Enlightenment
dfs and similar
,
dsu
,
graphs
2400
x1009
915F
Imbalance Value of a Tree
data structures
,
dsu
,
graphs
,
trees
2400
x1178
506D
Mr. Kitayuta's Colorful Graph
brute force
,
dfs and similar
,
dsu
,
graphs
2400
x1279
1408E
Avoid Rainbow Cycles
data structures
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2400
x1383
46F
Hercule Poirot Problem
dsu
,
graphs
2300
x247
358E
Dima and Kicks
brute force
,
dsu
,
graphs
,
implementation
2300
x329
313E
Ilya and Two Numbers
constructive algorithms
,
data structures
,
dsu
,
greedy
2300
x447
141E
Clearing Up
constructive algorithms
,
dp
,
dsu
,
graphs
2300
x540
9E
Interestring graph and Apples
dfs and similar
,
dsu
,
graphs
2300
x560
87D
Beautiful Road
dfs and similar
,
dp
,
dsu
,
graphs
,
implementation
,
sortings
,
trees
2300
x624
91C
Ski Base
combinatorics
,
dsu
,
graphs
2300
x692
870E
Points, Lines and Ready-made Titles
dfs and similar
,
dsu
,
graphs
,
trees
2300
x761
1385G
Columns Swaps
2-sat
,
dfs and similar
,
dsu
,
graphs
,
implementation
2300
x848
901C
Bipartite Segments
binary search
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
two pointers
2300
x876
652E
Pursuit For Artifacts
dfs and similar
,
dsu
,
graphs
,
trees
2300
x1045
500E
New Year Domino
data structures
,
dp
,
dsu
2300
x1076
723F
st-Spanning Tree
dsu
,
graphs
,
greedy
,
implementation
2300
x1122
891C
Envy
data structures
,
dsu
,
graphs
2300
x1165
1380E
Merging Towers
data structures
,
dsu
,
implementation
,
trees
2300
x1329
160D
Edges in MST
dfs and similar
,
dsu
,
graphs
,
sortings
2300
x1373
1009F
Dominant Indices
data structures
,
dsu
,
trees
2300
x2086
600E
Lomsat gelral
data structures
,
dfs and similar
,
dsu
,
trees
2300
x5217
45B
School
dp
,
dsu
2200
x181
97E
Leaders
dfs and similar
,
dsu
,
graphs
,
trees
2200
x210
76A
Gift
dsu
,
graphs
,
sortings
,
trees
2200
x770
733F
Drivers Dissatisfaction
data structures
,
dsu
,
graphs
,
trees
2200
x816
1039C
Network Safety
dfs and similar
,
dsu
,
graphs
,
math
,
sortings
2200
x1034
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