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Pinely Round 4 (Div. 1 + Div. 2)
04:07:52
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Difficulty:
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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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Custom test
Problems
#
Name
1214H
Tiles Placement
constructive algorithms
,
dfs and similar
,
trees
2800
x379
1214G
Feeling Good
bitmasks
,
data structures
3200
x286
1214F
Employment
greedy
,
sortings
2700
x426
1214E
Petya and Construction Set
constructive algorithms
,
graphs
,
math
,
sortings
,
trees
2000
x2665
1213F
Unstable String Sort
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
strings
2100
x2544
1211I
Unusual Graph
*special problem
,
graphs
3000
x38
1211H
Road Repair in Treeland
*special problem
,
binary search
,
dp
,
trees
3100
x45
1211G
King's Path
*special problem
,
math
,
trees
2500
x70
1211F
kotlinkotlinkotlinkotlin...
*special problem
,
graphs
,
implementation
,
strings
2300
x121
1211E
Double Permutation Inc.
*special problem
,
binary search
,
greedy
2000
x191
1211D
Teams
*special problem
,
binary search
,
greedy
,
math
2000
x227
1210G
Mateusz and Escape Room
dp
3500
x159
1210F2
Marek and Matching (hard version)
brute force
,
probabilities
3200
x194
1210F1
Marek and Matching (easy version)
brute force
,
probabilities
3100
x191
1210E
Wojtek and Card Tricks
math
2700
x395
1210D
Konrad and Company Evaluation
graphs
2400
x1489
1210C
Kamil and Making a Stream
math
,
number theory
,
trees
2000
x3294
1209H
Moving Walkways
data structures
,
greedy
,
math
3300
x139
1209G2
Into Blocks (hard version)
data structures
3200
x420
1209G1
Into Blocks (easy version)
data structures
,
dsu
,
greedy
,
implementation
,
two pointers
2000
x3136
1209F
Koala and Notebook
data structures
,
dfs and similar
,
graphs
,
shortest paths
,
strings
,
trees
2600
x1117
1209E2
Rotate Columns (hard version)
bitmasks
,
dp
,
greedy
,
sortings
2500
x1901
1209E1
Rotate Columns (easy version)
bitmasks
,
brute force
,
dp
,
greedy
,
sortings
2000
x2914
1208H
Red Blue Tree
data structures
,
implementation
,
trees
3500
x147
1208G
Polygons
greedy
,
math
,
number theory
2800
x740
1208F
Bits And Pieces
bitmasks
,
dfs and similar
,
dp
,
greedy
2600
x2371
1208E
Let Them Slide
data structures
,
implementation
2200
x2014
1207G
Indie Album
data structures
,
dfs and similar
,
hashing
,
string suffix structures
,
strings
,
trees
2700
x991
1207F
Remainder Problem
brute force
,
data structures
,
implementation
2100
x5058
1205F
Beauty of a Permutation
constructive algorithms
,
math
3400
x122
1205E
Expected Value Again
combinatorics
,
strings
3100
x274
1205D
Almost All
constructive algorithms
,
trees
2700
x635
1205C
Palindromic Paths
implementation
,
interactive
2400
x1148
1204E
Natasha, Sasha and the Prefix Sums
combinatorics
,
dp
,
math
,
number theory
2300
x1636
1204D2
Kirk and a Binary String (hard version)
data structures
,
greedy
,
math
,
strings
2100
x3211
1204D1
Kirk and a Binary String (easy version)
brute force
,
greedy
,
strings
2000
x3046
1203F2
Complete the Projects (hard version)
dp
,
greedy
2300
x2808
1203F1
Complete the Projects (easy version)
greedy
2100
x3469
1202F
You Are Given Some Letters...
binary search
,
implementation
,
math
2700
x387
1202E
You Are Given Some Strings...
brute force
,
string suffix structures
,
strings
2400
x2026
1202C
You Are Given a WASD-string...
brute force
,
data structures
,
dp
,
greedy
,
implementation
,
math
,
strings
2100
x2509
1201E2
Knightmare (hard)
graphs
,
interactive
,
shortest paths
3000
x143
1201E1
Knightmare (easy)
graphs
,
interactive
,
shortest paths
2900
x127
1201D
Treasure Hunting
binary search
,
dp
,
greedy
,
implementation
2100
x2331
1200F
Graph Traveler
brute force
,
data structures
,
dfs and similar
,
dp
,
graphs
,
implementation
,
math
,
number theory
2300
x1062
1200E
Compress Words
brute force
,
hashing
,
implementation
,
string suffix structures
,
strings
2000
x7366
1198F
GCD Groups 2
greedy
,
number theory
,
probabilities
2900
x847
1198E
Rectangle Painting 2
flows
,
graph matchings
,
graphs
2500
x1168
1198D
Rectangle Painting 1
dp
2300
x3164
1198C
Matching vs Independent Set
constructive algorithms
,
graphs
,
greedy
,
sortings
2000
x3504
1197F
Coloring Game
dp
,
games
,
matrices
2700
x245
1197E
Culture Code
binary search
,
combinatorics
,
data structures
,
dp
,
shortest paths
,
sortings
2300
x1619
1196F
K-th Path
brute force
,
constructive algorithms
,
shortest paths
,
sortings
2200
x2563
1195F
Geometers Anonymous Club
data structures
,
geometry
,
math
,
sortings
2500
x877
1195E
OpenStreetMap
data structures
,
two pointers
2100
x2979
1194G
Another Meme Problem
dp
2700
x239
1194F
Crossword Expert
combinatorics
,
dp
,
number theory
,
probabilities
,
two pointers
2400
x981
1194E
Count The Rectangles
bitmasks
,
brute force
,
data structures
,
geometry
,
sortings
2200
x1910
1190F
Tokitsukaze and Powers
number theory
,
probabilities
3400
x92
1190E
Tokitsukaze and Explosion
binary search
,
greedy
3100
x225
1190D
Tokitsukaze and Strange Rectangle
data structures
,
divide and conquer
,
sortings
,
two pointers
2000
x2241
1190C
Tokitsukaze and Duel
brute force
,
games
,
greedy
2300
x1955
1188E
Problem from Red Panda
combinatorics
3300
x227
1188D
Make Equal
dp
3100
x677
1188C
Array Beauty
dp
2500
x1737
1188B
Count Pairs
math
,
matrices
,
number theory
,
two pointers
2300
x4421
1188A2
Add on a Tree: Revolution
constructive algorithms
,
dfs and similar
,
implementation
,
trees
2500
x1219
1187G
Gang Up
flows
,
graphs
2500
x507
1187F
Expected Square Beauty
dp
,
math
,
probabilities
2500
x857
1187E
Tree Painting
dfs and similar
,
dp
,
trees
2100
x7954
1187D
Subarray Sorting
data structures
,
sortings
2400
x2520
1186F
Vus the Cossack and a Graph
dfs and similar
,
graphs
,
greedy
,
implementation
2400
x762
1186E
Vus the Cossack and a Field
divide and conquer
,
implementation
,
math
2500
x619
1185G2
Playlist for Polycarp (hard version)
combinatorics
,
dp
2600
x748
1185G1
Playlist for Polycarp (easy version)
bitmasks
,
combinatorics
,
dp
2100
x2824
1185F
Two Pizzas
bitmasks
,
brute force
2100
x2021
1185E
Polycarp and Snakes
brute force
,
implementation
2000
x2638
1184E3
Daleks' Invasion (hard)
data structures
,
dsu
,
graphs
,
trees
2400
x500
1184E2
Daleks' Invasion (medium)
dfs and similar
,
graphs
,
shortest paths
,
trees
2100
x918
1184D2
Parallel Universes (Hard)
math
,
matrices
3100
x104
1184C3
Heidi and the Turing Test (Hard)
3200
x41
1184C2
Heidi and the Turing Test (Medium)
data structures
2200
x607
1184B3
The Doctor Meets Vader (Hard)
flows
,
shortest paths
2700
x171
1184B2
The Doctor Meets Vader (Medium)
flows
,
graph matchings
,
graphs
,
shortest paths
,
sortings
2200
x571
1184A3
Heidi Learns Hashing (Hard)
fft
,
math
,
number theory
3100
x139
1184A2
Heidi Learns Hashing (Medium)
brute force
,
number theory
2100
x947
1183G
Candy Box (hard version)
greedy
,
implementation
,
sortings
2000
x2330
1183F
Topforces Strikes Back
brute force
,
math
,
sortings
2100
x1988
1183E
Subsequences (easy version)
dp
,
graphs
,
implementation
,
shortest paths
2000
x4741
1182F
Maximum Sine
binary search
,
data structures
,
number theory
2700
x334
1182E
Product Oriented Recurrence
dp
,
math
,
matrices
,
number theory
2300
x2759
1182D
Complete Mirror
constructive algorithms
,
dfs and similar
,
dp
,
hashing
,
implementation
,
trees
2400
x820
1181E2
A Story of One Country (Hard)
brute force
,
greedy
,
sortings
3000
x277
1181E1
A Story of One Country (Easy)
brute force
,
divide and conquer
,
sortings
2500
x466
1181D
Irrigation
binary search
,
data structures
,
implementation
,
sortings
,
trees
,
two pointers
2200
x2324
1179E
Alesya and Discrete Math
divide and conquer
,
interactive
3200
x173
1179D
Fedor Runs for President
data structures
,
dp
,
trees
2700
x799
1179C
Serge and Dining Room
binary search
,
data structures
,
graph matchings
,
greedy
,
implementation
,
math
,
trees
2200
x1997
1178H
Stock Exchange
binary search
,
flows
,
graphs
3500
x225
1178G
The Awesomest Vertex
data structures
,
dfs and similar
3000
x434
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