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Pinely Round 4 (Div. 1 + Div. 2)
10:14:49
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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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Custom test
Problems
#
Name
1313C1
Skyscrapers (easy version)
brute force
,
data structures
,
dp
,
greedy
1500
x10348
1313B
Different Rules
constructive algorithms
,
greedy
,
implementation
,
math
1700
x6652
1312D
Count the Arrays
combinatorics
,
math
1700
x9291
1312C
Adding Powers
bitmasks
,
greedy
,
implementation
,
math
,
number theory
,
ternary search
1400
x16263
1310A
Recommendations
data structures
,
greedy
,
sortings
1700
x5150
1307C
Cow and Message
brute force
,
dp
,
math
,
strings
1500
x11754
1305C
Kuroni and Impossible Calculation
brute force
,
combinatorics
,
math
,
number theory
1600
x14222
1304D
Shortest and Longest LIS
constructive algorithms
,
graphs
,
greedy
,
two pointers
1800
x6282
1304C
Air Conditioner
dp
,
greedy
,
implementation
,
sortings
,
two pointers
1500
x16198
1303C
Perfect Keyboard
dfs and similar
,
greedy
,
implementation
1600
x12084
1303B
National Project
math
1400
x15633
1301C
Ayoub's function
binary search
,
combinatorics
,
greedy
,
math
,
strings
1700
x9270
1301B
Motarack's Birthday
binary search
,
greedy
,
ternary search
1500
x14102
1299B
Aerodynamic
geometry
1800
x5219
1299A
Anu Has a Function
brute force
,
greedy
,
math
1500
x11958
1296E1
String Coloring (easy version)
constructive algorithms
,
dp
,
graphs
,
greedy
,
sortings
1800
x7385
1296D
Fight with Monsters
greedy
,
sortings
1500
x14158
1296C
Yet Another Walking Robot
data structures
,
implementation
1500
x14711
1295D
Same GCDs
math
,
number theory
1800
x8726
1295C
Obtain The String
dp
,
greedy
,
strings
1600
x12807
1295B
Infinite Prefixes
math
,
strings
1700
x9265
1294D
MEX maximizing
data structures
,
greedy
,
implementation
,
math
1600
x11640
1292B
Aroma's Search
brute force
,
constructive algorithms
,
geometry
,
greedy
,
implementation
1700
x6286
1292A
NEKO's Maze Game
data structures
,
dsu
,
implementation
1400
x13152
1290B
Irreducible Anagrams
binary search
,
constructive algorithms
,
data structures
,
strings
,
two pointers
1800
x5260
1290A
Mind Control
brute force
,
data structures
,
implementation
1600
x8532
1288C
Two Arrays
combinatorics
,
dp
1600
x12646
1287B
Hyperset
brute force
,
data structures
,
implementation
1500
x9396
1286B
Numbers on Tree
constructive algorithms
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
trees
1800
x4644
1286A
Garland
dp
,
greedy
,
sortings
1800
x8694
1285C
Fadi and LCM
brute force
,
math
,
number theory
1400
x22890
1284C
New Year and Permutation
combinatorics
,
math
1600
x7959
1284B
New Year and Ascent Sequence
binary search
,
combinatorics
,
data structures
,
dp
,
implementation
,
sortings
1400
x10789
1283E
New Year Parties
dp
,
greedy
1800
x6495
1283D
Christmas Trees
graphs
,
greedy
,
shortest paths
1800
x7699
1283C
Friends and Gifts
constructive algorithms
,
data structures
,
math
1500
x13056
1282C
Petya and Exam
greedy
,
sortings
,
two pointers
1800
x4272
1282B2
K for the Price of One (Hard Version)
dp
,
greedy
,
sortings
1600
x10096
1282B1
K for the Price of One (Easy Version)
dp
,
greedy
,
sortings
1400
x11410
1281B
Azamon Web Services
greedy
1600
x8244
1280B
Beingawesomeism
implementation
,
math
1800
x3914
1280A
Cut and Paste
implementation
,
math
1700
x5351
1279D
Santa's Bot
combinatorics
,
math
,
probabilities
1700
x6172
1279C
Stack of Presents
data structures
,
implementation
1400
x11621
1278C
Berry Jam
data structures
,
dp
,
greedy
,
implementation
1700
x7919
1278B
A and B
greedy
,
math
1500
x13159
1276A
As Simple as One and Two
dp
,
greedy
1400
x12248
1272D
Remove One Element
brute force
,
dp
1500
x16316
1270C
Make Good
bitmasks
,
constructive algorithms
,
math
1400
x13941
1269B
Modulo Equality
brute force
,
sortings
1500
x9092
1268A
Long Beautiful Integer
constructive algorithms
,
greedy
,
implementation
,
strings
1700
x8507
1267L
Lexicography
constructive algorithms
,
strings
1800
x3006
1267J
Just Arrange the Icons
greedy
,
implementation
,
math
1800
x2784
1267E
Elections
greedy
1700
x3155
1266C
Diverse Matrix
constructive algorithms
,
greedy
,
math
,
number theory
1400
x9592
1264A
Beautiful Regional Contest
greedy
,
implementation
1500
x10023
1263D
Secret Passwords
dfs and similar
,
dsu
,
graphs
1500
x13741
1263C
Everyone is a Winner!
binary search
,
math
,
meet-in-the-middle
,
number theory
1400
x13586
1263B
PIN Codes
greedy
,
implementation
1400
x11303
1260C
Infinite Fence
greedy
,
math
,
number theory
1700
x8184
1257D
Yet Another Monster Killing Problem
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
1700
x7487
1256D
Binary String Minimizing
greedy
1500
x11948
1256C
Platforms Jumping
greedy
1700
x6836
1256B
Minimize the Permutation
greedy
1400
x13012
1255C
League of Leesins
constructive algorithms
,
implementation
1600
x6671
1254B1
Send Boxes to Alice (Easy Version)
constructive algorithms
,
greedy
,
math
,
number theory
,
ternary search
,
two pointers
1800
x4592
1254A
Feeding Chicken
constructive algorithms
,
greedy
,
implementation
1700
x5145
1253D
Harmonious Graph
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
1700
x9078
1253C
Sweets Eating
dp
,
greedy
,
math
,
sortings
1500
x14117
1253B
Silly Mistake
greedy
,
implementation
1400
x11121
1252H
Twin Buildings
greedy
,
implementation
1800
x2609
1252C
Even Path
data structures
,
implementation
1600
x3650
1251C
Minimize The Integer
greedy
,
two pointers
1600
x12143
1251B
Binary Palindromes
greedy
,
strings
1400
x10933
1250L
Divide The Students
binary search
,
greedy
,
math
1500
x4059
1250J
The Parade
binary search
,
greedy
1800
x2895
1250H
Happy Birthday
math
1500
x4016
1250B
The Feast and the Bus
brute force
,
constructive algorithms
,
greedy
,
math
1800
x2587
1250A
Berstagram
implementation
1400
x4051
1249E
By Elevator or Stairs?
dp
,
shortest paths
1700
x9522
1249D2
Too Many Segments (hard version)
data structures
,
greedy
,
sortings
1800
x5166
1249D1
Too Many Segments (easy version)
greedy
1800
x5035
1249C2
Good Numbers (hard version)
binary search
,
greedy
,
math
,
meet-in-the-middle
1500
x12502
1245C
Constanze's Machine
dp
1400
x17290
1244D
Paint the Tree
brute force
,
constructive algorithms
,
dp
,
graphs
,
implementation
,
trees
1800
x7454
1243B2
Character Swap (Hard Version)
strings
1600
x7059
1242A
Tile Painting
constructive algorithms
,
math
,
number theory
1500
x12514
1239A
Ivan the Fool and the Probability Theory
combinatorics
,
dp
,
math
1700
x7302
1238C
Standard Free2play
dp
,
greedy
,
math
1600
x7349
1237C1
Balanced Removals (Easier)
constructive algorithms
,
geometry
,
greedy
1700
x6048
1236B
Alice and the List of Presents
combinatorics
,
math
1500
x10942
1234D
Distinct Characters Queries
data structures
1600
x14651
1234C
Pipes
dp
,
implementation
1500
x12463
1228C
Primes and Multiplication
math
,
number theory
1700
x8936
1228B
Filling the Grid
implementation
,
math
1400
x11487
1227D2
Optimal Subsequences (Hard Version)
data structures
,
greedy
1800
x4286
1227D1
Optimal Subsequences (Easy Version)
data structures
,
greedy
1600
x6351
1227C
Messy
constructive algorithms
1700
x5488
1225D
Power Products
hashing
,
math
,
number theory
1800
x7784
1225C
p-binary
bitmasks
,
brute force
,
math
1600
x8873
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