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Pinely Round 4 (Div. 1 + Div. 2)
38:14:17
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binary search
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
1996F
Bomb
binary search
,
greedy
,
math
x1357
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
1994C
Hungry Games
binary search
,
dp
,
two pointers
x7943
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
1988E
Range Minimum Sum
binary search
,
brute force
,
data structures
,
divide and conquer
,
implementation
2300
x1028
1986G1
Permutation Problem (Simple Version)
binary search
,
brute force
,
combinatorics
,
data structures
,
math
,
number theory
2200
x1225
1985F
Final Boss
binary search
,
data structures
1500
x13085
1983F
array-value
binary search
,
bitmasks
,
data structures
,
greedy
,
two pointers
2500
x963
1983C
Have Your Cake and Eat It Too
binary search
,
brute force
,
greedy
,
implementation
1400
x10904
1982F
Sorting Problem Again
binary search
,
data structures
,
sortings
2600
x803
1982C
Boring Day
binary search
,
data structures
,
dp
,
greedy
,
two pointers
1200
x15272
1979E
Manhattan Triangle
binary search
,
constructive algorithms
,
data structures
,
geometry
,
implementation
,
two pointers
2400
x1246
1979C
Earning on Bets
binary search
,
combinatorics
,
constructive algorithms
,
number theory
1200
x17089
1978B
New Bakery
binary search
,
greedy
,
math
,
ternary search
800
x20522
1976D
Invertible Bracket Sequences
binary search
,
combinatorics
,
data structures
,
divide and conquer
,
implementation
,
two pointers
2000
x3685
1976C
Job Interview
binary search
,
dp
,
greedy
,
implementation
,
two pointers
1600
x9277
1975E
Chain Queries
binary search
,
data structures
,
dfs and similar
,
implementation
,
trees
2100
x2014
1975C
Chamo and Mocha's Array
binary search
,
brute force
,
greedy
1200
x13248
1974F
Cutting Game
binary search
,
brute force
,
data structures
,
implementation
,
sortings
,
two pointers
1900
x3226
1973B
Cat, Fox and the Lonely Array
binary search
,
bitmasks
,
data structures
,
greedy
,
math
,
two pointers
1300
x12900
1971F
Circle Perimeter
binary search
,
brute force
,
dfs and similar
,
geometry
,
implementation
,
math
1600
x8926
1971E
Find the Car
binary search
,
math
,
sortings
1500
x12739
1969E
Unique Array
binary search
,
data structures
,
divide and conquer
,
dp
,
greedy
2400
x1209
1968G2
Division + LCP (hard version)
binary search
,
brute force
,
data structures
,
dp
,
hashing
,
math
,
string suffix structures
,
strings
2200
x1740
1968G1
Division + LCP (easy version)
binary search
,
data structures
,
dp
,
hashing
,
string suffix structures
,
strings
1900
x3855
1968F
Equal XOR Segments
binary search
,
data structures
1800
x4928
1967D
Long Way to be Non-decreasing
binary search
,
dfs and similar
,
graphs
,
implementation
,
shortest paths
,
two pointers
2800
x566
1967A
Permutation Counting
binary search
,
greedy
,
implementation
,
math
,
sortings
1400
x11371
1957F2
Frequency Mismatch (Hard Version)
binary search
,
data structures
,
dfs and similar
,
hashing
,
probabilities
,
trees
2700
x364
1957F1
Frequency Mismatch (Easy Version)
binary search
,
data structures
,
divide and conquer
,
hashing
,
probabilities
,
trees
2600
x417
1956A
Nene's Game
binary search
,
brute force
,
data structures
,
games
,
greedy
800
x20693
1954E
Chain Reaction
binary search
,
data structures
,
dsu
,
greedy
,
implementation
,
math
,
number theory
2200
x2046
1952G
Mathematician Takeover
binary search
,
dfs and similar
,
math
x989
1951I
Growing Trees
binary search
,
constructive algorithms
,
flows
,
graphs
,
greedy
3200
x71
1951H
Thanos Snap
binary search
,
dp
,
games
,
greedy
,
trees
3200
x234
1951B
Battle Cows
binary search
,
data structures
,
greedy
1200
x13701
1949B
Charming Meals
binary search
,
brute force
,
greedy
,
sortings
1500
x2645
1946C
Tree Cutting
binary search
,
dp
,
greedy
,
implementation
,
trees
1600
x10024
1945G
Cook and Porridge
binary search
,
constructive algorithms
,
data structures
,
implementation
2500
x696
1945E
Binary Search
binary search
,
constructive algorithms
,
greedy
1700
x7615
1943E2
MEX Game 2 (Hard Version)
binary search
,
greedy
,
two pointers
3300
x275
1943E1
MEX Game 2 (Easy Version)
binary search
,
brute force
,
greedy
2900
x408
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
x5600
1941E
Rudolf and k Bridges
binary search
,
data structures
,
dp
,
two pointers
1600
x8982
1936F
Grand Finale: Circles
binary search
,
geometry
3300
x75
1936D
Bitwise Paradox
binary search
,
bitmasks
,
data structures
,
greedy
,
two pointers
3100
x466
1936B
Pinball
binary search
,
data structures
,
implementation
,
math
,
two pointers
2000
x2655
1935F
Andrey's Tree
binary search
,
constructive algorithms
,
data structures
,
dfs and similar
,
dsu
,
greedy
,
implementation
,
trees
2800
x425
1935D
Exam in MAC
binary search
,
combinatorics
,
implementation
,
math
1800
x7804
1935C
Messenger in MAC
binary search
,
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
1800
x7731
1934C
Find a Mine
binary search
,
constructive algorithms
,
geometry
,
greedy
,
interactive
,
math
1700
x6402
1933E
Turtle vs. Rabbit Race: Optimal Trainings
binary search
,
implementation
,
math
,
ternary search
1500
x10576
1930C
Lexicographically Largest
binary search
,
constructive algorithms
,
data structures
,
greedy
,
sortings
1700
x6749
1929C
Sasha and the Casino
binary search
,
brute force
,
constructive algorithms
,
games
,
greedy
,
math
1400
x14113
1928B
Equalize
binary search
,
greedy
,
sortings
,
two pointers
1200
x16438
1927D
Find the Different Ones!
binary search
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
two pointers
1300
x19922
1926E
Vlad and an Odd Ordering
binary search
,
bitmasks
,
data structures
,
dp
,
implementation
,
math
,
number theory
1500
x11148
1923F
Shrink-Reverse
binary search
,
brute force
,
greedy
,
hashing
,
implementation
,
string suffix structures
,
strings
2800
x358
1923D
Slimes
binary search
,
constructive algorithms
,
data structures
,
greedy
,
two pointers
1800
x6358
1920F2
Smooth Sailing (Hard Version)
binary search
,
data structures
,
dsu
,
geometry
,
graphs
,
trees
3000
x434
1920F1
Smooth Sailing (Easy Version)
binary search
,
brute force
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
shortest paths
2500
x919
1920D
Array Repetition
binary search
,
brute force
,
dsu
,
implementation
,
math
1900
x5345
1918D
Blocking Elements
binary search
,
data structures
,
dp
,
implementation
,
two pointers
1900
x4529
1915C
Can I Square?
binary search
,
implementation
800
x40042
1913F
Palindromic Problem
binary search
,
data structures
,
hashing
,
string suffix structures
,
strings
2800
x304
1913C
Game with Multiset
binary search
,
bitmasks
,
brute force
,
greedy
1300
x14377
1910H
Sum of Digits of Sums
*special problem
,
binary search
,
data structures
2400
x85
1907D
Jumping Through Segments
binary search
,
constructive algorithms
1400
x13046
1906D
Spaceship Exploration
binary search
,
geometry
2800
x104
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
1903F
Babysitting
2-sat
,
binary search
,
data structures
,
graphs
,
trees
2500
x597
1903D1
Maximum And Queries (easy version)
binary search
,
bitmasks
,
brute force
,
greedy
1700
x5392
1902D
Robot Queries
binary search
,
data structures
,
dp
,
implementation
1900
x3903
1902B
Getting Points
binary search
,
brute force
,
greedy
1100
x13920
1901F
Landscaping
binary search
,
geometry
,
two pointers
2900
x149
1901D
Yet Another Monster Fight
binary search
,
dp
,
greedy
,
implementation
,
math
1700
x6555
1900F
Local Deletions
binary search
,
data structures
,
implementation
2800
x276
1896D
Ones and Twos
binary search
,
data structures
,
divide and conquer
,
math
,
two pointers
1700
x5478
1896C
Matching Arrays
binary search
,
constructive algorithms
,
greedy
,
sortings
1400
x9184
1895G
Two Characters, Two Colors
binary search
,
data structures
,
dp
,
flows
,
greedy
3100
x182
1895E
Infinite Card Game
binary search
,
brute force
,
data structures
,
dfs and similar
,
dp
,
dsu
,
games
,
graphs
,
greedy
,
sortings
,
two pointers
2300
x1517
1891D
Suspicious logarithms
binary search
,
brute force
,
math
1900
x3845
1891C
Smilo and Monsters
binary search
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
1500
x12374
1887E
Good Colorings
binary search
,
constructive algorithms
,
graphs
,
interactive
3100
x344
1887D
Split
binary search
,
data structures
,
divide and conquer
,
dsu
,
math
,
trees
,
two pointers
2700
x849
1887C
Minimum Array
binary search
,
brute force
,
constructive algorithms
,
data structures
,
greedy
,
hashing
,
two pointers
2400
x1660
1887B
Time Travel
binary search
,
graphs
,
shortest paths
1900
x2836
1886B
Fear of the Dark
binary search
,
geometry
,
math
1200
x15723
1884B
Haunted House
binary search
,
greedy
,
math
,
two pointers
1100
x12328
1883G2
Dances (Hard Version)
binary search
,
greedy
,
sortings
,
two pointers
1900
x5157
1883G1
Dances (Easy version)
binary search
,
greedy
,
two pointers
1400
x10128
1881G
Anya and the Mysterious String
binary search
,
data structures
2000
x2263
1878G
wxhtzdy ORO Tree
binary search
,
bitmasks
,
brute force
,
data structures
,
dfs and similar
,
implementation
,
trees
2300
x1141
1878E
Iva & Pav
binary search
,
bitmasks
,
data structures
,
greedy
1400
x11999
1876G
Clubstep
binary search
,
brute force
,
data structures
,
greedy
,
trees
3500
x119
1876F
Indefinite Clownfish
binary search
,
graphs
3500
x127
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