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Contest is running
Kotlin Heroes: Practice 10
13:59:09
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Before contest
Kotlin Heroes: Episode 10
14:59:09
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Difficulty:
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brute force
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
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Status
Standings
Custom test
Problems
#
Name
611B
New Year and Old Property
bitmasks
,
brute force
,
implementation
1300
x9789
602A
Two Bases
brute force
,
implementation
1100
x8362
599D
Spongebob and Squares
brute force
,
math
1900
x2531
598E
Chocolate Bar
brute force
,
dp
2000
x4621
594C
Edo and Magnets
brute force
,
greedy
,
implementation
,
two pointers
2300
x673
593A
2Char
brute force
,
implementation
1200
x5673
585A
Gennady the Dentist
brute force
,
implementation
1800
x4113
584D
Dima and Lisa
brute force
,
math
,
number theory
1800
x8843
581D
Three Logos
bitmasks
,
brute force
,
constructive algorithms
,
geometry
,
implementation
,
math
1700
x3432
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x84058
579B
Finding Team Member
brute force
,
implementation
,
sortings
1300
x5219
578B
"Or" Game
brute force
,
greedy
1700
x5117
575C
Party
bitmasks
,
brute force
,
graph matchings
2700
x211
574B
Bear and Three Musketeers
brute force
,
dfs and similar
,
graphs
,
hashing
1500
x7607
568D
Sign Posts
brute force
,
geometry
,
math
2800
x298
568A
Primes or Palindromes?
brute force
,
implementation
,
math
,
number theory
1600
x5000
559A
Gerald's Hexagon
brute force
,
geometry
,
math
1600
x10285
558C
Amr and Chemistry
brute force
,
graphs
,
greedy
,
math
,
shortest paths
1900
x3929
558A
Lala Land and Apple Trees
brute force
,
implementation
,
sortings
1100
x10179
557C
Arthur and Table
brute force
,
data structures
,
dp
,
greedy
,
math
,
sortings
1900
x3940
556B
Case of Fake Numbers
brute force
,
implementation
1100
x7878
554B
Ohana Cleans Up
brute force
,
greedy
,
strings
1200
x9687
554A
Kyoya and Photobooks
brute force
,
math
,
strings
900
x12723
552E
Vanya and Brackets
brute force
,
dp
,
expression parsing
,
greedy
,
implementation
,
strings
2100
x1409
552D
Vanya and Triangles
brute force
,
combinatorics
,
data structures
,
geometry
,
math
,
sortings
1900
x4356
552C
Vanya and Scales
brute force
,
dp
,
greedy
,
math
,
meet-in-the-middle
,
number theory
1900
x5391
551B
ZgukistringZ
brute force
,
constructive algorithms
,
implementation
,
strings
1800
x3759
551A
GukiZ and Contest
brute force
,
implementation
,
sortings
800
x16021
550C
Divisibility by Eight
brute force
,
dp
,
math
1500
x27280
550B
Preparing Olympiad
bitmasks
,
brute force
1400
x19507
550A
Two Substrings
brute force
,
dp
,
greedy
,
implementation
,
strings
1500
x36335
548B
Mike and Fun
brute force
,
dp
,
greedy
,
implementation
1400
x8276
548A
Mike and Fax
brute force
,
implementation
,
strings
1100
x9835
547A
Mike and Frog
brute force
,
greedy
,
implementation
,
math
2200
x2311
546C
Soldier and Cards
brute force
,
dfs and similar
,
games
1400
x17076
546B
Soldier and Badges
brute force
,
greedy
,
implementation
,
sortings
1200
x17198
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x168067
538F
A Heap of Heaps
brute force
,
data structures
,
math
,
sortings
2200
x1498
538D
Weird Chess
brute force
,
constructive algorithms
,
implementation
1800
x2406
538C
Tourist's Notes
binary search
,
brute force
,
greedy
,
implementation
,
math
1600
x5760
538A
Cutting Banner
brute force
,
implementation
1400
x7049
535B
Tavas and SaDDas
bitmasks
,
brute force
,
combinatorics
,
implementation
1100
x21650
535A
Tavas and Nafas
brute force
,
implementation
1000
x11823
529B
Group Photo 2 (online mirror version)
brute force
,
greedy
,
sortings
1900
x853
528D
Fuzzy Search
bitmasks
,
brute force
,
fft
2500
x2069
526C
Om Nom and Candies
brute force
,
greedy
,
math
2000
x2266
526A
King of Thieves
brute force
,
implementation
1300
x4724
525E
Anya and Cubes
binary search
,
bitmasks
,
brute force
,
dp
,
math
,
meet-in-the-middle
2100
x2752
518F
Pasha and Pipe
binary search
,
brute force
,
combinatorics
,
dp
,
implementation
2300
x352
515B
Drazil and His Happy Friends
brute force
,
dsu
,
meet-in-the-middle
,
number theory
1300
x7363
514B
Han Solo and Lazer Gun
brute force
,
data structures
,
geometry
,
implementation
,
math
1400
x20182
513G1
Inversions problem
brute force
,
dfs and similar
,
dp
,
meet-in-the-middle
1800
x1755
513B1
Permutations
brute force
1400
x3575
510D
Fox And Jumping
bitmasks
,
brute force
,
dp
,
math
1900
x5183
509A
Maximum in Table
brute force
,
implementation
800
x37269
508A
Pasha and Pixels
brute force
1100
x7793
506D
Mr. Kitayuta's Colorful Graph
brute force
,
dfs and similar
,
dsu
,
graphs
2400
x2030
505A
Mr. Kitayuta's Gift
brute force
,
implementation
,
strings
1100
x6594
497D
Gears
brute force
,
geometry
,
math
2900
x224
496C
Removing Columns
brute force
,
constructive algorithms
,
implementation
1500
x7560
496B
Secret Combination
brute force
,
constructive algorithms
,
implementation
1500
x5807
496A
Minimum Difficulty
brute force
,
implementation
,
math
900
x16105
493C
Vasya and Basketball
binary search
,
brute force
,
data structures
,
implementation
,
sortings
,
two pointers
1600
x6673
490E
Restoring Increasing Sequence
binary search
,
brute force
,
greedy
,
implementation
2000
x1516
490D
Chocolate
brute force
,
dfs and similar
,
math
,
meet-in-the-middle
,
number theory
1900
x2069
490C
Hacking Cypher
brute force
,
math
,
number theory
,
strings
1700
x8908
489D
Unbearable Controversy of Being
brute force
,
combinatorics
,
dfs and similar
,
graphs
1700
x6545
488B
Candy Boxes
brute force
,
constructive algorithms
,
math
1900
x2079
488A
Giga Tower
brute force
1100
x14056
487A
Fight the Monster
binary search
,
brute force
,
implementation
1800
x3660
486C
Palindrome Transformation
brute force
,
greedy
,
implementation
1700
x11502
485B
Valuable Resources
brute force
,
greedy
1300
x6448
483A
Counterexample
brute force
,
implementation
,
math
,
number theory
1100
x22232
479B
Towers
brute force
,
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x7549
479A
Expression
brute force
,
math
1000
x88834
478E
Wavy numbers
brute force
,
dfs and similar
,
meet-in-the-middle
,
sortings
2900
x206
476B
Dreamoon and WiFi
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
probabilities
1300
x29070
475D
CGCDSSQ
brute force
,
data structures
,
math
2000
x4478
475C
Kamal-ol-molk's Painting
brute force
,
constructive algorithms
,
greedy
2100
x777
475B
Strongly Connected City
brute force
,
dfs and similar
,
graphs
,
implementation
1400
x8239
474C
Captain Marmot
brute force
,
geometry
2000
x3067
471C
MUH and House of Cards
binary search
,
brute force
,
greedy
,
math
1700
x3535
467B
Fedor and New Game
bitmasks
,
brute force
,
constructive algorithms
,
implementation
1100
x35986
466C
Number of Ways
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x34614
466B
Wonder Room
brute force
,
math
2000
x4602
464B
Restore Cube
brute force
,
geometry
2000
x1663
463E
Caisa and Tree
brute force
,
dfs and similar
,
math
,
number theory
,
trees
2100
x1386
463B
Caisa and Pylons
brute force
,
implementation
,
math
1100
x25847
463A
Caisa and Sugar
brute force
,
implementation
1200
x9102
462A
Appleman and Easy Task
brute force
,
implementation
1000
x16559
460E
Roland and Rose
brute force
,
geometry
,
math
,
sortings
2700
x335
460D
Little Victor and Set
brute force
,
constructive algorithms
,
math
2300
x974
460B
Little Dima and Equation
brute force
,
implementation
,
math
,
number theory
1500
x12096
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x44320
457C
Elections
brute force
2100
x869
453B
Little Pony and Harmony Chest
bitmasks
,
brute force
,
dp
2000
x4524
452B
4-point polyline
brute force
,
constructive algorithms
,
geometry
,
trees
1800
x1978
452A
Eevee
brute force
,
implementation
,
strings
1000
x7901
451C
Predict Outcome of the Game
brute force
,
implementation
,
math
1700
x3300
448E
Divisors
brute force
,
dfs and similar
,
implementation
,
number theory
2200
x1446
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