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combine-tags-by-or
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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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Status
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Custom test
Problems
#
Name
1786B
Cake Assembly Line
brute force
,
sortings
1300
x9042
1786A2
Alternating Deck (hard version)
implementation
800
x11467
1786A1
Non-alternating Deck (easy version)
implementation
800
x14097
1784F
Minimums or Medians
3400
x254
1784E
Infinite Game
brute force
,
combinatorics
,
dp
,
games
,
probabilities
3100
x347
1784D
Wooden Spoon
combinatorics
,
dp
2400
x1042
1784C
Monsters (hard version)
data structures
,
greedy
2200
x1683
1784B
Letter Exchange
constructive algorithms
1900
x3359
1784A
Monsters (easy version)
brute force
,
greedy
1000
x15280
1783G
Weighed Tree Radius
data structures
,
divide and conquer
,
implementation
,
trees
2800
x482
1783F
Double Sort II
dfs and similar
,
flows
,
graph matchings
,
graphs
2500
x1041
1783E
Game of the Year
brute force
,
data structures
,
math
,
number theory
2300
x2128
1783D
Different Arrays
brute force
,
dp
,
implementation
2000
x4506
1783C
Yet Another Tournament
binary search
,
greedy
,
sortings
1700
x9423
1783B
Matrix of Differences
constructive algorithms
,
math
1100
x17860
1783A
Make it Beautiful
constructive algorithms
,
math
,
sortings
800
x30965
1781H2
Window Signals (hard version)
3500
x97
1781H1
Window Signals (easy version)
3200
x119
1781G
Diverse Coloring
constructive algorithms
,
trees
3200
x232
1781F
Bracket Insertion
combinatorics
,
dp
,
math
,
trees
2700
x919
1781E
Rectangle Shrinking
binary search
,
brute force
,
data structures
,
greedy
,
implementation
,
two pointers
2300
x1310
1781D
Many Perfect Squares
brute force
,
math
,
number theory
1800
x5561
1781C
Equal Frequencies
brute force
,
constructive algorithms
,
greedy
,
implementation
,
sortings
,
strings
1600
x7737
1781B
Going to the Cinema
brute force
,
greedy
,
sortings
1000
x13588
1781A
Parallel Projection
geometry
,
math
800
x15145
1780G
Delicious Dessert
binary search
,
dsu
,
hashing
,
math
,
number theory
,
string suffix structures
2400
x754
1780F
Three Chairs
bitmasks
,
brute force
,
combinatorics
,
data structures
,
dp
,
number theory
,
sortings
2300
x1517
1780E
Josuke and Complete Graph
binary search
,
brute force
,
data structures
,
math
,
number theory
2400
x1466
1780D
Bit Guessing Game
binary search
,
bitmasks
,
constructive algorithms
,
interactive
1800
x5010
1780B
GCD Partition
brute force
,
greedy
,
math
,
number theory
1100
x18457
1780A
Hayato and School
constructive algorithms
,
greedy
800
x21785
1779H
Olympic Team Building
brute force
,
meet-in-the-middle
3500
x144
1779G
The Game of the Century
constructive algorithms
,
graphs
,
shortest paths
3000
x322
1779F
Xorcerer's Stones
bitmasks
,
constructive algorithms
,
dp
,
trees
2500
x1267
1779E
Anya's Simultaneous Exhibition
constructive algorithms
,
graphs
,
greedy
,
interactive
,
sortings
2400
x1802
1779D
Boris and His Amazing Haircut
constructive algorithms
,
data structures
,
dp
,
dsu
,
greedy
,
sortings
1700
x7985
1779C
Least Prefix Sum
data structures
,
greedy
1600
x12513
1779B
MKnez's ConstructiveForces Task
constructive algorithms
,
math
900
x23719
1779A
Hall of Fame
constructive algorithms
,
greedy
,
strings
800
x23218
1778F
Maximizing Root
dfs and similar
,
dp
,
graphs
,
math
,
number theory
,
trees
2600
x675
1778E
The Tree Has Fallen!
bitmasks
,
dfs and similar
,
math
,
trees
2500
x904
1778D
Flexible String Revisit
combinatorics
,
dp
,
math
,
probabilities
2100
x2830
1778C
Flexible String
bitmasks
,
brute force
,
strings
1600
x8363
1778B
The Forbidden Permutation
greedy
,
math
1300
x13395
1778A
Flip Flop Sum
greedy
,
implementation
800
x24496
1777F
Comfortably Numb
bitmasks
,
data structures
,
divide and conquer
,
strings
,
trees
2400
x980
1777E
Edge Reverse
binary search
,
dfs and similar
,
graphs
,
trees
2200
x1885
1777D
Score of a Tree
bitmasks
,
combinatorics
,
dfs and similar
,
dp
,
math
,
probabilities
,
trees
1900
x3556
1777C
Quiz Master
binary search
,
math
,
number theory
,
sortings
,
two pointers
1700
x8749
1777B
Emordnilap
combinatorics
,
greedy
,
math
900
x17638
1777A
Everybody Likes Good Arrays!
greedy
,
math
800
x25166
1776N
Count Permutations
math
3500
x83
1776M
Parmigiana With Seafood
binary search
,
dp
,
greedy
,
trees
3000
x378
1776L
Controllers
binary search
,
math
1500
x6237
1776K
Uniform Chemistry
dp
,
math
3200
x69
1776J
Italian Data Centers
graphs
,
shortest paths
2500
x703
1776I
Spinach Pizza
games
,
geometry
,
greedy
,
interactive
2500
x687
1776H
Beppa and SwerChat
two pointers
1300
x6502
1776G
Another Wine Tasting Event
combinatorics
,
constructive algorithms
,
math
,
strings
2100
x2083
1776F
Train Splitting
constructive algorithms
,
graphs
,
greedy
1700
x3524
1776E
Crossing the Railways
data structures
,
dp
3500
x73
1776D
Teamwork
constructive algorithms
,
greedy
,
math
2800
x372
1776C
Library game
games
,
greedy
,
interactive
,
sortings
2500
x813
1776B
Vittorio Plays with LEGO Bricks
dp
,
geometry
2200
x1362
1776A
Walking Boy
greedy
800
x7046
1775F
Laboratory on Pluto
constructive algorithms
,
dp
,
greedy
,
math
2500
x769
1775E
The Human Equation
greedy
,
implementation
2100
x3294
1775D
Friendly Spiders
dfs and similar
,
graphs
,
math
,
number theory
,
shortest paths
1800
x6372
1775C
Interesting Sequence
bitmasks
,
math
1600
x10655
1775B
Gardener and the Array
bitmasks
,
constructive algorithms
1300
x14159
1775A2
Gardener and the Capybaras (hard version)
constructive algorithms
,
greedy
900
x18852
1775A1
Gardener and the Capybaras (easy version)
brute force
,
constructive algorithms
,
implementation
800
x19741
1774H
Maximum Permutation
constructive algorithms
3500
x135
1774G
Segment Covering
brute force
,
combinatorics
,
constructive algorithms
,
data structures
,
dp
,
trees
3200
x443
1774F2
Magician and Pigs (Hard Version)
binary search
,
brute force
,
data structures
,
implementation
2700
x716
1774F1
Magician and Pigs (Easy Version)
brute force
,
data structures
,
implementation
2400
x1087
1774E
Two Chess Pieces
dfs and similar
,
dp
,
greedy
,
trees
1900
x3531
1774D
Same Count One
brute force
,
constructive algorithms
,
greedy
,
implementation
,
two pointers
1600
x7980
1774C
Ice and Fire
constructive algorithms
,
dp
,
greedy
1300
x12119
1774B
Coloring
constructive algorithms
,
greedy
,
math
1500
x12403
1774A
Add Plus Minus Sign
constructive algorithms
,
math
800
x22523
1773L
Lisa's Sequences
dp
3500
x45
1773K
King's Puzzle
constructive algorithms
1900
x1443
1773J
Jumbled Trees
constructive algorithms
,
math
2900
x110
1773I
Interactive Factorial Guessing
brute force
,
games
,
implementation
,
interactive
2500
x492
1773H
Hot and Cold
binary search
,
interactive
2600
x372
1773G
Game of Questions
bitmasks
,
combinatorics
,
dp
,
fft
,
math
,
probabilities
2800
x391
1773F
Football
constructive algorithms
800
x4191
1773E
Easy Assembly
greedy
,
sortings
1400
x4957
1773D
Dominoes
combinatorics
,
flows
,
graph matchings
,
greedy
2600
x484
1773C
Cactus Meets Torus
3500
x30
1773B
BinCoin
binary search
,
divide and conquer
,
hashing
,
implementation
,
probabilities
,
trees
2200
x792
1773A
Amazing Trick
constructive algorithms
,
graph matchings
,
math
,
probabilities
1900
x1571
1772G
Gaining Rating
binary search
,
greedy
,
implementation
,
math
,
sortings
,
two pointers
2200
x1375
1772F
Copy of a Copy of a Copy
constructive algorithms
,
dfs and similar
,
graphs
,
implementation
,
sortings
2000
x2410
1772E
Permutation Game
games
1700
x6844
1772D
Absolute Sorting
constructive algorithms
,
math
1400
x16140
1772C
Different Differences
constructive algorithms
,
greedy
,
math
1000
x23998
1772B
Matrix Rotation
brute force
,
implementation
800
x29477
1772A
A+B?
implementation
800
x48952
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