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Pinely Round 4 (Div. 1 + Div. 2)
34:00:23
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sortings
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
1995B2
Bouquet (Hard Version)
binary search
,
data structures
,
greedy
,
math
,
sortings
,
two pointers
x6161
1995B1
Bouquet (Easy Version)
binary search
,
brute force
,
greedy
,
sortings
,
two pointers
x13298
1992B
Angry Monk
greedy
,
math
,
sortings
800
x29689
1992A
Only Pluses
brute force
,
constructive algorithms
,
greedy
,
math
,
sortings
800
x35010
1990A
Submission Bait
brute force
,
games
,
greedy
,
sortings
x17400
1989D
Smithing Skill
brute force
,
data structures
,
dp
,
greedy
,
math
,
sortings
,
two pointers
1900
x5010
1986E
Beautiful Array
greedy
,
math
,
number theory
,
sortings
1700
x7557
1986C
Update Queries
data structures
,
greedy
,
sortings
1100
x20955
1986B
Matrix Stabilization
brute force
,
data structures
,
greedy
,
sortings
1000
x24338
1986A
X Axis
brute force
,
geometry
,
math
,
sortings
800
x36393
1984G
Magic Trick II
constructive algorithms
,
implementation
,
sortings
3200
x201
1983D
Swap Dilemma
constructive algorithms
,
data structures
,
divide and conquer
,
greedy
,
math
,
sortings
1700
x7082
1982F
Sorting Problem Again
binary search
,
data structures
,
sortings
2600
x803
1982A
Soccer
greedy
,
implementation
,
math
,
sortings
800
x22982
1980F2
Field Division (hard version)
math
,
sortings
2400
x861
1980F1
Field Division (easy version)
data structures
,
math
,
sortings
1900
x3343
1980E
Permutation of Rows and Columns
constructive algorithms
,
data structures
,
greedy
,
hashing
,
implementation
,
math
,
matrices
,
sortings
1600
x9314
1980B
Choosing Cubes
sortings
,
sortings
800
x32376
1978A
Alice and Books
constructive algorithms
,
greedy
,
sortings
800
x23477
1977C
Nikita and LCM
brute force
,
data structures
,
dp
,
greedy
,
math
,
number theory
,
sortings
1900
x6037
1976F
Remove Bridges
data structures
,
dfs and similar
,
dp
,
greedy
,
sortings
,
trees
2800
x477
1976A
Verify Password
implementation
,
sortings
,
strings
800
x26318
1975B
378QAQ and Mocha's Array
brute force
,
greedy
,
math
,
sortings
1000
x16355
1975A
Bazoka and Mocha's Array
brute force
,
greedy
,
implementation
,
sortings
800
x17646
1974G
Money Buys Less Happiness Now
data structures
,
greedy
,
sortings
2000
x3786
1974F
Cutting Game
binary search
,
brute force
,
data structures
,
implementation
,
sortings
,
two pointers
1900
x3227
1974B
Symmetric Encoding
implementation
,
sortings
,
strings
800
x28667
1973E
Cat, Fox and Swaps
graphs
,
math
,
sortings
2500
x721
1973C
Cat, Fox and Double Maximum
constructive algorithms
,
greedy
,
implementation
,
math
,
sortings
1700
x7592
1971G
XOUR
data structures
,
dsu
,
sortings
1700
x8300
1971E
Find the Car
binary search
,
math
,
sortings
1500
x12740
1971D
Binary Cut
dp
,
greedy
,
implementation
,
sortings
,
strings
1100
x23808
1971A
My First Sorting Problem
implementation
,
sortings
800
x40679
1970A1
Balanced Shuffle (Easy)
implementation
,
sortings
1000
x3790
1969D
Shop Game
data structures
,
greedy
,
math
,
sortings
1900
x4084
1967A
Permutation Counting
binary search
,
greedy
,
implementation
,
math
,
sortings
1400
x11371
1965A
Everything Nim
games
,
greedy
,
math
,
sortings
1400
x12427
1956F
Nene and the Passing Game
constructive algorithms
,
data structures
,
dsu
,
graphs
,
sortings
3000
x315
1955E
Long Inversions
brute force
,
greedy
,
implementation
,
sortings
1700
x8025
1955B
Progressive Square
constructive algorithms
,
data structures
,
implementation
,
sortings
1000
x26281
1954D
Colored Balls
combinatorics
,
dp
,
math
,
sortings
1800
x5596
1952J
Help, what does it mean to be "Based"
brute force
,
constructive algorithms
,
expression parsing
,
implementation
,
sortings
x736
1951C
Ticket Hoarding
greedy
,
math
,
sortings
1400
x10871
1949F
Dating
greedy
,
sortings
,
trees
2200
x858
1949B
Charming Meals
binary search
,
brute force
,
greedy
,
sortings
1500
x2645
1946A
Median of an Array
greedy
,
implementation
,
sortings
800
x25163
1945F
Kirill and Mushrooms
data structures
,
sortings
1900
x3926
1942D
Learning to Paint
binary search
,
data structures
,
dfs and similar
,
dp
,
greedy
,
implementation
,
sortings
2100
x2643
1941F
Rudolf and Imbalance
binary search
,
greedy
,
sortings
,
two pointers
1800
x5601
1940D
Almost Certainly
*special problem
,
constructive algorithms
,
data structures
,
sortings
x127
1940C
Burenka and Pether
*special problem
,
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
graphs
,
sortings
,
trees
x35
1940B
Three Arrays
*special problem
,
constructive algorithms
,
implementation
,
sortings
x182
1936C
Pokémon Arena
data structures
,
graphs
,
greedy
,
implementation
,
shortest paths
,
sortings
2400
x1209
1935C
Messenger in MAC
binary search
,
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
1800
x7732
1933D
Turtle Tenacity: Continual Mods
constructive algorithms
,
greedy
,
math
,
number theory
,
sortings
1200
x19222
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x37034
1932F
Feed Cats
data structures
,
dp
,
sortings
1900
x3794
1931E
Anna and the Valentine's Day Gift
games
,
greedy
,
math
,
sortings
1400
x14626
1930C
Lexicographically Largest
binary search
,
constructive algorithms
,
data structures
,
greedy
,
sortings
1700
x6750
1930A
Maximise The Score
greedy
,
sortings
800
x17961
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x30397
1928B
Equalize
binary search
,
greedy
,
sortings
,
two pointers
1200
x16438
1927F
Microcycle
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
sortings
,
trees
1900
x4125
1924B
Space Harbour
data structures
,
implementation
,
math
,
sortings
2100
x2402
1922B
Forming Triangles
combinatorics
,
constructive algorithms
,
math
,
sortings
1200
x19873
1921D
Very Different Array
data structures
,
greedy
,
sortings
,
two pointers
1100
x20907
1920B
Summation Game
games
,
greedy
,
math
,
sortings
1100
x20095
1919D
01 Tree
constructive algorithms
,
data structures
,
dsu
,
greedy
,
sortings
,
trees
2100
x3717
1918F
Caterpillar on a Tree
dfs and similar
,
graphs
,
greedy
,
implementation
,
sortings
,
trees
2500
x825
1918E
ace5 and Task Order
constructive algorithms
,
divide and conquer
,
implementation
,
interactive
,
probabilities
,
sortings
2200
x1644
1918B
Minimize Inversions
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
900
x23008
1915G
Bicycles
graphs
,
greedy
,
implementation
,
shortest paths
,
sortings
1800
x5906
1915F
Greetings
data structures
,
divide and conquer
,
sortings
1500
x12683
1914E2
Game with Marbles (Hard Version)
games
,
greedy
,
sortings
1400
x11820
1914E1
Game with Marbles (Easy Version)
brute force
,
games
,
greedy
,
sortings
1400
x11711
1914D
Three Activities
brute force
,
dp
,
greedy
,
implementation
,
sortings
1200
x19954
1912A
Accumulator Apex
data structures
,
implementation
,
sortings
1900
x1966
1909C
Heavy Intervals
constructive algorithms
,
data structures
,
dsu
,
greedy
,
math
,
sortings
1400
x10599
1907F
Shift and Reverse
greedy
,
sortings
1800
x4641
1906F
Maximize The Value
data structures
,
sortings
2100
x1002
1904D2
Set To Max (Hard Version)
constructive algorithms
,
data structures
,
divide and conquer
,
greedy
,
implementation
,
sortings
1800
x4123
1904C
Array Game
binary search
,
brute force
,
data structures
,
sortings
,
two pointers
1400
x11825
1904B
Collecting Game
binary search
,
dp
,
greedy
,
sortings
,
two pointers
1100
x14135
1903A
Halloumi Boxes
brute force
,
greedy
,
sortings
800
x27973
1901E
Compressed Tree
dfs and similar
,
dp
,
graphs
,
greedy
,
sortings
,
trees
2200
x1451
1899G
Unusual Entertainment
data structures
,
dfs and similar
,
dsu
,
shortest paths
,
sortings
,
trees
,
two pointers
1900
x3054
1899E
Queue Sort
greedy
,
implementation
,
sortings
1300
x14799
1898E
Sofia and Strings
data structures
,
greedy
,
sortings
,
strings
,
two pointers
2200
x2167
1896G
Pepe Racing
constructive algorithms
,
implementation
,
interactive
,
sortings
3200
x325
1896E
Permutation Sorting
data structures
,
sortings
2100
x2138
1896C
Matching Arrays
binary search
,
constructive algorithms
,
greedy
,
sortings
1400
x9184
1896A
Jagged Swaps
sortings
800
x21201
1895E
Infinite Card Game
binary search
,
brute force
,
data structures
,
dfs and similar
,
dp
,
dsu
,
games
,
graphs
,
greedy
,
sortings
,
two pointers
2300
x1517
1895B
Points and Minimum Distance
greedy
,
math
,
sortings
800
x20117
1893B
Neutral Tonality
constructive algorithms
,
greedy
,
sortings
,
two pointers
1700
x8519
1891E
Brukhovich and Exams
brute force
,
greedy
,
implementation
,
math
,
sortings
2500
x801
1891C
Smilo and Monsters
binary search
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
1500
x12374
1891B
Deja Vu
brute force
,
math
,
sortings
1100
x16945
1891A
Sorting with Twos
constructive algorithms
,
sortings
800
x18898
1889C1
Doremy's Drying Plan (Easy Version)
brute force
,
data structures
,
dp
,
greedy
,
sortings
2000
x3142
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