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Pinely Round 4 (Div. 1 + Div. 2)
38:00:27
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Difficulty:
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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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Problems
#
Name
1996G
Penacony
brute force
,
data structures
,
dp
,
hashing
x355
1996F
Bomb
binary search
,
greedy
,
math
x1362
1996E
Decode
brute force
,
combinatorics
,
implementation
x4417
1996D
Fun
brute force
,
number theory
x7881
1996C
Sort
strings
x13838
1996B
Scale
implementation
x22787
1996A
Legs
math
x27635
1995E2
Let Me Teach You a Lesson (Hard Version)
bitmasks
,
data structures
,
dp
,
graphs
,
matrices
,
two pointers
x122
1995E1
Let Me Teach You a Lesson (Easy Version)
data structures
,
dp
,
matrices
,
two pointers
x182
1995D
Cases
bitmasks
,
brute force
,
dp
,
strings
x1222
1995C
Squaring
brute force
,
constructive algorithms
,
greedy
,
implementation
,
math
,
number theory
x5365
1995B2
Bouquet (Hard Version)
binary search
,
data structures
,
greedy
,
math
,
sortings
,
two pointers
x6146
1995B1
Bouquet (Easy Version)
binary search
,
brute force
,
greedy
,
sortings
,
two pointers
x13281
1995A
Diagonals
brute force
,
greedy
,
implementation
,
math
x18488
1994H
Fortnite
combinatorics
,
constructive algorithms
,
games
,
greedy
,
hashing
,
interactive
,
math
,
number theory
,
strings
x97
1994G
Minecraft
bitmasks
,
brute force
,
dp
,
graphs
,
math
x615
1994F
Stardew Valley
constructive algorithms
,
dfs and similar
,
graphs
,
trees
x831
1994E
Wooden Game
bitmasks
,
greedy
,
math
,
trees
x3040
1994D
Funny Game
constructive algorithms
,
dsu
,
graphs
,
greedy
,
math
,
number theory
,
trees
x4021
1994C
Hungry Games
binary search
,
dp
,
two pointers
x7943
1994B
Fun Game
bitmasks
,
constructive algorithms
,
greedy
,
math
x13233
1994A
Diverse Game
constructive algorithms
,
greedy
,
implementation
x16812
1992G
Ultra-Meow
combinatorics
,
dp
,
math
2000
x2243
1992F
Valuable Cards
brute force
,
dp
,
greedy
,
number theory
,
two pointers
1900
x4594
1992E
Novice's Mistake
brute force
,
constructive algorithms
,
implementation
,
math
,
strings
1700
x7654
1992D
Test of Love
dp
,
greedy
,
implementation
1200
x17275
1992C
Gorilla and Permutation
constructive algorithms
,
math
900
x25271
1992B
Angry Monk
greedy
,
math
,
sortings
800
x29679
1992A
Only Pluses
brute force
,
constructive algorithms
,
greedy
,
math
,
sortings
800
x34993
1990F
Polygonal Segments
brute force
,
data structures
,
divide and conquer
,
dp
,
greedy
,
two pointers
x147
1990E2
Catch the Mole(Hard Version)
binary search
,
data structures
,
dfs and similar
,
interactive
,
trees
x600
1990E1
Catch the Mole(Easy Version)
binary search
,
data structures
,
dfs and similar
,
interactive
,
trees
x656
1990D
Grid Puzzle
bitmasks
,
brute force
,
dp
,
greedy
,
implementation
x4291
1990C
Mad MAD Sum
brute force
,
greedy
,
math
x8364
1990B
Array Craft
constructive algorithms
,
greedy
x12728
1990A
Submission Bait
brute force
,
games
,
greedy
,
sortings
x17390
1989F
Simultaneous Coloring
dfs and similar
,
divide and conquer
,
graphs
3000
x319
1989E
Distance to Different
combinatorics
,
dp
,
math
2300
x1570
1989D
Smithing Skill
brute force
,
data structures
,
dp
,
greedy
,
math
,
sortings
,
two pointers
1900
x5007
1989C
Two Movies
greedy
,
math
1400
x15677
1989B
Substring and Subsequence
brute force
,
greedy
,
strings
1200
x17571
1989A
Catch the Coin
implementation
800
x23668
1988F
Heartbeat
combinatorics
,
dp
,
fft
,
math
3000
x104
1988E
Range Minimum Sum
binary search
,
brute force
,
data structures
,
divide and conquer
,
implementation
2300
x1028
1988D
The Omnipotent Monster Killer
brute force
,
dfs and similar
,
dp
,
trees
2000
x3902
1988C
Increasing Sequence with Fixed OR
bitmasks
,
constructive algorithms
,
greedy
1300
x13732
1988B
Make Majority
greedy
,
implementation
900
x19091
1988A
Split the Multiset
brute force
,
greedy
,
implementation
,
math
900
x19589
1987H
Fumo Temple
interactive
3500
x71
1987G2
Spinning Round (Hard Version)
divide and conquer
,
dp
,
trees
3500
x83
1987G1
Spinning Round (Easy Version)
divide and conquer
,
dp
,
trees
2900
x200
1987F2
Interesting Problem (Hard Version)
dp
2600
x836
1987F1
Interesting Problem (Easy Version)
dp
2500
x951
1987E
Wonderful Tree!
brute force
,
data structures
,
dfs and similar
,
dsu
,
greedy
,
trees
2000
x2791
1987D
World is Mine
dp
,
games
1800
x6032
1987C
Basil's Garden
dp
,
greedy
1200
x15140
1987B
K-Sort
greedy
1000
x17835
1987A
Upload More RAM
greedy
,
math
800
x22461
1986G2
Permutation Problem (Hard Version)
brute force
,
data structures
,
hashing
,
math
,
number theory
2500
x868
1986G1
Permutation Problem (Simple Version)
binary search
,
brute force
,
combinatorics
,
data structures
,
math
,
number theory
2200
x1225
1986F
Non-academic Problem
dfs and similar
,
graphs
,
trees
1900
x3753
1986E
Beautiful Array
greedy
,
math
,
number theory
,
sortings
1700
x7556
1986D
Mathematical Problem
brute force
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1400
x13490
1986C
Update Queries
data structures
,
greedy
,
sortings
1100
x20947
1986B
Matrix Stabilization
brute force
,
data structures
,
greedy
,
sortings
1000
x24334
1986A
X Axis
brute force
,
geometry
,
math
,
sortings
800
x36383
1985H2
Maximize the Largest Component (Hard Version)
data structures
,
dfs and similar
,
dp
,
dsu
,
implementation
2200
x1286
1985H1
Maximize the Largest Component (Easy Version)
brute force
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
implementation
1700
x4717
1985G
D-Function
combinatorics
,
math
,
number theory
1600
x7938
1985F
Final Boss
binary search
,
data structures
1500
x13085
1985E
Secret Box
brute force
,
combinatorics
,
math
1200
x17763
1985D
Manhattan Circle
implementation
,
math
900
x30857
1985C
Good Prefixes
greedy
1000
x28470
1985B
Maximum Multiple Sum
brute force
,
math
,
number theory
800
x40517
1985A
Creating Words
implementation
,
strings
800
x45369
1984H
Tower Capturing
combinatorics
,
dp
,
geometry
3300
x144
1984G
Magic Trick II
constructive algorithms
,
implementation
,
sortings
3200
x201
1984F
Reconstruction
brute force
,
dp
,
math
2500
x812
1984E
Shuffle
dp
,
greedy
,
trees
2400
x1232
1984D
''a'' String Problem
brute force
,
hashing
,
implementation
,
math
,
string suffix structures
,
strings
2000
x2875
1984C2
Magnitude (Hard Version)
combinatorics
,
dp
,
greedy
,
math
1700
x6527
1984C1
Magnitude (Easy Version)
dp
,
greedy
,
math
1300
x14671
1984B
Large Addition
implementation
,
math
1100
x16672
1984A
Strange Splitting
constructive algorithms
800
x19650
1983G
Your Loss
bitmasks
,
brute force
,
dp
,
trees
3000
x171
1983F
array-value
binary search
,
bitmasks
,
data structures
,
greedy
,
two pointers
2500
x963
1983E
I Love Balls
combinatorics
,
math
,
probabilities
2300
x1697
1983D
Swap Dilemma
constructive algorithms
,
data structures
,
divide and conquer
,
greedy
,
math
,
sortings
1700
x7080
1983C
Have Your Cake and Eat It Too
binary search
,
brute force
,
greedy
,
implementation
1400
x10904
1983B
Corner Twist
constructive algorithms
,
greedy
,
implementation
,
math
1200
x14454
1983A
Array Divisibility
constructive algorithms
,
math
800
x23476
1982F
Sorting Problem Again
binary search
,
data structures
,
sortings
2600
x803
1982E
Number of k-good subarrays
bitmasks
,
brute force
,
combinatorics
,
divide and conquer
,
dp
,
math
,
meet-in-the-middle
2300
x1359
1982D
Beauty of the mountains
brute force
,
data structures
,
implementation
,
math
,
number theory
1700
x6203
1982C
Boring Day
binary search
,
data structures
,
dp
,
greedy
,
two pointers
1200
x15272
1982B
Collatz Conjecture
brute force
,
implementation
,
math
,
number theory
1200
x15201
1982A
Soccer
greedy
,
implementation
,
math
,
sortings
800
x22980
1981F
Turtle and Paths on a Tree
data structures
,
dp
,
trees
3000
x216
1981E
Turtle and Intersected Segments
data structures
,
dsu
,
graphs
,
greedy
2600
x712
1981D
Turtle and Multiplication
constructive algorithms
,
dfs and similar
,
graphs
,
number theory
2400
x1378
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