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Kotlin Heroes: Practice 6
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flows
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
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number theory
probabilities
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shortest paths
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ternary search
trees
two pointers
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Problems
#
Name
1178H
Stock Exchange
binary search
,
flows
,
graphs
3500
x63
1023G
Pisces
data structures
,
flows
,
trees
3400
x41
793G
Oleg and chess
data structures
,
divide and conquer
,
flows
,
graph matchings
3400
x164
1427G
One Billion Shades of Grey
flows
,
graphs
3300
x75
1416F
Showing Off
flows
,
graph matchings
,
greedy
,
implementation
3300
x85
1368H1
Breadboard Capacity (easy version)
dp
,
flows
,
greedy
3300
x99
1408H
Rainbow Triples
binary search
,
data structures
,
flows
,
greedy
3300
x116
1383F
Special Edges
flows
,
graphs
3200
x92
786E
ALT
data structures
,
flows
,
graphs
,
trees
3200
x287
611H
New Year and Forgotten Tree
constructive algorithms
,
flows
,
graphs
3200
x301
925F
Parametric Circulation
binary search
,
flows
3100
x64
1250K
Projectors
flows
,
graphs
3100
x69
1307G
Cow and Exercise
flows
,
graphs
,
shortest paths
3100
x200
704D
Captain America
flows
,
greedy
3100
x375
457E
Flow Optimality
constructive algorithms
,
flows
,
math
3000
x43
843E
Maximum Flow
flows
,
graphs
3000
x86
212A
Privatization
flows
,
graphs
3000
x100
223E
Planar Graph
flows
,
geometry
,
graphs
3000
x115
739E
Gosha is hunting
brute force
,
data structures
,
dp
,
flows
,
math
,
probabilities
,
sortings
3000
x914
126E
Pills
brute force
,
flows
2900
x52
802O
April Fools' Problem (hard)
binary search
,
data structures
,
flows
2900
x120
736E
Chess Championship
constructive algorithms
,
flows
,
greedy
,
math
2900
x139
848D
Shake It!
combinatorics
,
dp
,
flows
,
graphs
2900
x146
1288F
Red-Blue Graph
constructive algorithms
,
flows
2900
x209
434D
Nanami's Power Plant
flows
2900
x252
343E
Pumping Stations
brute force
,
dfs and similar
,
divide and conquer
,
flows
,
graphs
,
greedy
,
trees
2900
x340
103E
Buying Sets
flows
,
graph matchings
2900
x404
708D
Incorrect Flow
flows
2900
x408
724E
Goods transportation
dp
,
flows
,
greedy
2900
x698
513F2
Scaygerboss
flows
2800
x205
1404E
Bricks
flows
,
graph matchings
,
graphs
2800
x480
280D
k-Maximum Subsequence Sum
data structures
,
flows
,
graphs
,
implementation
2800
x539
1184B3
The Doctor Meets Vader (Hard)
flows
,
shortest paths
2700
x131
62E
World Evil
dp
,
flows
2700
x146
513F1
Scaygerboss
flows
2700
x199
1054F
Electric Scheme
flows
,
graph matchings
2700
x208
903G
Yet Another Maxflow Problem
data structures
,
flows
,
graphs
2700
x290
1264E
Beautiful League
constructive algorithms
,
flows
,
graph matchings
2700
x292
132E
Bits of merry old England
flows
,
graphs
2700
x334
1146G
Zoning Restrictions
dp
,
flows
,
graphs
2700
x425
1473F
Strange Set
flows
,
math
2700
x456
802C
Heidi and Library (hard)
flows
2600
x276
818G
Four Melodies
flows
,
graphs
2600
x280
1430G
Yet Another DAG Problem
bitmasks
,
dfs and similar
,
dp
,
flows
,
graphs
,
math
2600
x304
1061E
Politics
flows
,
graphs
2600
x322
1107F
Vasya and Endless Credits
dp
,
flows
,
graph matchings
,
graphs
,
sortings
2600
x447
813D
Two Melodies
dp
,
flows
2600
x582
1045A
Last chance
data structures
,
flows
,
graph matchings
,
graphs
,
trees
2500
x191
1187G
Gang Up
flows
,
graphs
2500
x283
976F
Minimal k-covering
flows
,
graphs
2500
x350
628F
Bear and Fair Set
flows
2500
x421
884F
Anti-Palindromize
flows
,
graphs
,
greedy
2500
x516
1198E
Rectangle Painting 2
flows
,
graph matchings
,
graphs
2500
x609
1354F
Summoning Minions
constructive algorithms
,
dp
,
flows
,
graph matchings
,
greedy
,
sortings
2500
x654
720B
Cactusophobia
dfs and similar
,
flows
2400
x230
802N
April Fools' Problem (medium)
binary search
,
flows
,
graphs
2400
x309
1070I
Privatization of Roads in Berland
flows
,
graph matchings
,
graphs
2400
x369
847J
Students Initiation
binary search
,
flows
,
graphs
2400
x453
1009G
Allowed Letters
bitmasks
,
flows
,
graph matchings
,
graphs
,
greedy
2400
x470
717G
Underfail
flows
2400
x476
808F
Card Game
binary search
,
flows
,
graphs
2400
x530
1263F
Economic Difficulties
data structures
,
dfs and similar
,
dp
,
flows
,
graphs
,
trees
2400
x579
164C
Machine Programming
flows
,
graphs
2400
x637
277E
Binary Tree on Plane
flows
,
trees
2400
x731
1139E
Maximize Mex
flows
,
graph matchings
,
graphs
2400
x950
1082G
Petya and Graph
flows
,
graphs
2400
x978
1455E
Four Points
brute force
,
constructive algorithms
,
flows
,
geometry
,
greedy
,
implementation
,
math
,
ternary search
2400
x1016
491C
Deciphering
flows
,
graph matchings
2300
x247
1090E
Horseback Riding
flows
,
graphs
2300
x320
78E
Evacuation
flows
,
graphs
,
shortest paths
2300
x355
1252L
Road Construction
flows
,
graphs
2300
x422
316C2
Tidying Up
flows
,
graph matchings
2300
x467
311E
Biologist
flows
2300
x491
362E
Petya and Pipes
flows
,
graphs
,
shortest paths
2300
x530
877F
Ann and Books
data structures
,
flows
,
hashing
2300
x687
510E
Fox And Dinner
flows
2300
x1603
1184B2
The Doctor Meets Vader (Medium)
flows
,
graph matchings
,
graphs
,
shortest paths
,
sortings
2200
x423
316C1
Tidying Up
flows
2200
x450
863F
Almost Permutation
flows
2200
x770
723E
One-Way Reform
constructive algorithms
,
dfs and similar
,
flows
,
graphs
,
greedy
2200
x1366
1486E
Paired Payment
binary search
,
brute force
,
constructive algorithms
,
dp
,
flows
,
graphs
,
shortest paths
2200
x1599
653D
Delivery Bears
binary search
,
flows
,
graphs
2200
x1627
1034B
Little C Loves 3 II
brute force
,
constructive algorithms
,
flows
,
graph matchings
2200
x1699
852D
Exploration plan
binary search
,
flows
,
graph matchings
,
shortest paths
2100
x603
269C
Flawed Flow
constructive algorithms
,
flows
,
graphs
,
greedy
2100
x1343
498C
Array and Operations
flows
,
graph matchings
,
number theory
2100
x2279
546E
Soldier and Traveling
flows
,
graphs
,
math
2100
x2407
730I
Olympiad in Programming and Sports
dp
,
flows
,
graphs
,
greedy
2000
x1026
237E
Build String
flows
,
graphs
2000
x1148
899E
Segments Removal
data structures
,
dsu
,
flows
,
implementation
,
two pointers
2000
x1713
1438C
Engineer Artem
2-sat
,
chinese remainder theorem
,
constructive algorithms
,
fft
,
flows
2000
x6653
1423B
Valuable Paper
binary search
,
flows
,
graph matchings
,
graphs
1900
x1183
321B
Ciel and Duel
dp
,
flows
,
greedy
1900
x2068
965D
Single-use Stones
binary search
,
flows
,
greedy
,
two pointers
1900
x2259
1214D
Treasure Island
dfs and similar
,
dp
,
flows
,
hashing
1900
x3832
727D
T-shirts Distribution
constructive algorithms
,
flows
,
greedy
1800
x1396
1016D
Vasya And The Matrix
constructive algorithms
,
flows
,
math
1800
x3562
1426E
Rock, Paper, Scissors
brute force
,
constructive algorithms
,
flows
,
greedy
,
math
1800
x5034
1437C
Chef Monocarp
dp
,
flows
,
graph matchings
,
greedy
,
math
,
sortings
1800
x6443
1119B
Alyona and a Narrow Fridge
binary search
,
flows
,
greedy
,
sortings
1300
x7232
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