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Kotlin Heroes: Episode 11
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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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Custom test
Problems
#
Name
959C
Mahmoud and Ehab and the wrong algorithm
constructive algorithms
,
trees
1500
x5770
959B
Mahmoud and Ehab and the message
dsu
,
greedy
,
implementation
1200
x9596
958F1
Lightsabers (easy)
implementation
1500
x1611
958D1
Hyperspace Jump (easy)
expression parsing
,
math
1400
x2066
958C1
Encryption (easy)
brute force
1200
x2895
958A1
Death Stars (easy)
implementation
1400
x1660
957A
Tritonic Iridescence
implementation
1300
x5757
955B
Not simply beatiful strings
implementation
1400
x4820
955A
Feed the cat
greedy
,
math
1100
x6651
954B
String Typing
implementation
,
strings
1400
x7256
950B
Intercepted Message
greedy
,
implementation
1100
x7572
946C
String Transformation
greedy
,
strings
1300
x8864
946B
Weird Subtraction Process
math
,
number theory
1100
x10855
940C
Phone Numbers
constructive algorithms
,
implementation
,
strings
1500
x5853
940B
Our Tanya is Crying Out Loud
dp
,
greedy
1400
x8970
940A
Points on the line
brute force
,
greedy
,
sortings
1200
x8281
938B
Run For Your Prize
brute force
,
greedy
1100
x8825
937B
Vile Grasshoppers
brute force
,
math
,
number theory
1400
x6893
934B
A Prosperous Lot
constructive algorithms
,
implementation
1200
x8659
934A
A Compatible Pair
brute force
,
games
1400
x6982
932B
Recursive Queries
binary search
,
data structures
,
dfs and similar
1300
x8090
931B
World Cup
constructive algorithms
,
implementation
1200
x7099
930A
Peculiar apple-tree
dfs and similar
,
graphs
,
trees
1500
x7117
929B
Места в самолёте
*special problem
,
implementation
1300
x2044
929A
Прокат велосипедов
*special problem
,
greedy
,
implementation
1400
x2499
928B
Chat
*special problem
,
dp
1400
x2534
928A
Login Verification
*special problem
,
strings
1200
x3388
926G
Large Bouquets
1500
x1475
926A
2-3-numbers
implementation
,
math
1300
x3754
924A
Mystical Mosaic
greedy
,
implementation
1300
x5046
922B
Magic Forest
brute force
1300
x8468
922A
Cloning Toys
implementation
1300
x11528
920C
Swap Adjacent Elements
dfs and similar
,
greedy
,
math
,
sortings
,
two pointers
1400
x9171
920B
Tea Queue
implementation
1200
x7297
919C
Seat Arrangements
brute force
,
implementation
1300
x8963
919B
Perfect Number
binary search
,
brute force
,
dp
,
implementation
,
number theory
1100
x28030
915B
Browser
implementation
1300
x7733
914B
Conan and Agasa play a Card Game
games
,
greedy
,
implementation
1200
x8608
913B
Christmas Spruce
implementation
,
trees
1200
x16016
912B
New Year's Eve
bitmasks
,
constructive algorithms
,
number theory
1300
x12008
911C
Three Garlands
brute force
,
constructive algorithms
1400
x7026
911B
Two Cakes
binary search
,
brute force
,
implementation
1200
x11360
911A
Nearest Minimums
implementation
1100
x11445
909B
Segments
constructive algorithms
,
math
1300
x6379
908C
New Year and Curling
brute force
,
geometry
,
implementation
,
math
1500
x6910
908B
New Year and Buggy Bot
brute force
,
implementation
1200
x7643
907B
Tic-Tac-Toe
implementation
1400
x4063
907A
Masha and Bears
brute force
,
implementation
1300
x5694
903C
Boxes Packing
greedy
1200
x17266
903B
The Modcrab
greedy
,
implementation
1200
x7729
902B
Coloring a Tree
dfs and similar
,
dsu
,
greedy
1200
x10800
902A
Visiting a Friend
greedy
,
implementation
1100
x9801
901A
Hashing Trees
constructive algorithms
,
trees
1500
x5110
900B
Position in Fraction
math
,
number theory
1300
x7822
899C
Dividing the numbers
constructive algorithms
,
graphs
,
math
1300
x8448
899B
Months and Years
implementation
1200
x5880
898C
Phone Numbers
implementation
,
strings
1400
x5276
898B
Proper Nutrition
brute force
,
implementation
,
number theory
1100
x9562
897B
Chtholly's request
brute force
1300
x7163
895A
Pizza Separation
brute force
,
implementation
1200
x6533
893C
Rumor
dfs and similar
,
graphs
,
greedy
1300
x22996
892B
Wrath
greedy
,
implementation
,
two pointers
1200
x8897
891A
Pride
brute force
,
dp
,
greedy
,
math
,
number theory
1500
x10141
888C
K-Dominant Character
binary search
,
implementation
,
two pointers
1400
x8221
887C
Solution for Cube
brute force
,
implementation
1500
x2892
887B
Cubes for Masha
brute force
,
implementation
1300
x5625
886C
Petya and Catacombs
dsu
,
greedy
,
implementation
,
trees
1300
x5473
884C
Bertown Subway
dfs and similar
,
greedy
,
math
1500
x4704
884B
Japanese Crosswords Strike Back
implementation
1100
x6871
883M
Quadcopter Competition
greedy
,
math
1100
x3586
883F
Lost in Transliteration
implementation
1300
x2268
883E
Field of Wonders
implementation
,
strings
1500
x1898
879B
Table Tennis
data structures
,
implementation
1200
x12364
877B
Nikita and string
brute force
,
dp
1500
x10401
877A
Alex and broken contest
implementation
,
strings
1100
x10867
876B
Divisiblity of Differences
implementation
,
math
,
number theory
1300
x9125
875B
Sorting the Coins
dsu
,
implementation
,
sortings
,
two pointers
1500
x5186
875A
Classroom Watch
brute force
,
math
1200
x9573
873B
Balanced Substring
dp
,
implementation
1500
x7771
870C
Maximum splitting
dp
,
greedy
,
math
,
number theory
1300
x9093
870B
Maximum of Maximums of Minimums
greedy
1200
x9480
869B
The Eternal Immortality
math
1100
x13581
869A
The Artful Expedient
brute force
,
implementation
1100
x9457
868C
Qualification Rounds
bitmasks
,
brute force
,
constructive algorithms
,
dp
1500
x4613
868B
Race Against Time
implementation
1400
x3677
865A
Save the problem!
constructive algorithms
1400
x4327
864D
Make a Permutation!
greedy
,
implementation
,
math
1500
x5995
864C
Bus
greedy
,
implementation
,
math
1500
x5853
863B
Kayaking
brute force
,
greedy
,
sortings
1500
x8214
862B
Mahmoud and Ehab and the bipartiteness
dfs and similar
,
graphs
,
trees
1300
x17498
859C
Pie Rules
dp
,
games
1500
x5386
858C
Did you mean...
dp
,
greedy
,
implementation
1500
x5619
858B
Which floor?
brute force
,
implementation
1500
x3732
858A
k-rounding
brute force
,
math
,
number theory
1100
x8006
855B
Marvolo Gaunt's Ring
brute force
,
data structures
,
dp
1500
x8602
854B
Maxim Buys an Apartment
constructive algorithms
,
math
1200
x8192
853A
Planning
greedy
1500
x5840
851B
Arpa and an exam about geometry
geometry
,
math
1400
x5486
847A
Union of Doubly Linked Lists
implementation
1500
x3366
846A
Curriculum Vitae
brute force
,
implementation
1500
x4238
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