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Pinely Round 4 (Div. 1 + Div. 2)
06:04:56
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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
780E
Underground Lab
constructive algorithms
,
dfs and similar
,
graphs
2100
x2525
778E
Selling Numbers
dp
,
sortings
3000
x304
778D
Parquet Re-laying
constructive algorithms
2700
x500
778C
Peterson Polyglot
brute force
,
dfs and similar
,
dsu
,
hashing
,
strings
,
trees
2500
x872
777E
Hanoi Factory
brute force
,
data structures
,
dp
,
greedy
,
sortings
2000
x3955
776G
Sherlock and the Encrypted Data
bitmasks
,
combinatorics
,
dp
2900
x335
776F
Sherlock's bet to Moriarty
constructive algorithms
,
data structures
,
divide and conquer
,
geometry
,
graphs
,
implementation
,
trees
2800
x429
776E
The Holmes Children
math
,
number theory
2100
x2129
776D
The Door Problem
2-sat
,
dfs and similar
,
dsu
,
graphs
2000
x4946
775A
University Schedule
*special problem
2900
774L
Bars
*special problem
,
binary search
2000
x331
774J
Stepan's Series
*special problem
,
dp
2000
x356
774I
Composing Of String
*special problem
,
dp
2300
x101
774H
Repairing Of String
*special problem
,
constructive algorithms
2200
x255
774G
Perfectionist Arkadiy
*special problem
,
number theory
2700
x176
774F
Pens And Days Of Week
*special problem
,
binary search
,
number theory
2700
x106
774E
Big Number and Remainder
*special problem
,
math
,
number theory
2300
x210
774B
Significant Cups
*special problem
,
binary search
,
data structures
,
two pointers
2100
x217
774A
Amusement Park
*special problem
,
ternary search
2100
x297
773F
Test Data Generation
combinatorics
,
divide and conquer
,
dp
,
fft
,
math
,
number theory
3400
x187
773E
Blog Post Rating
data structures
,
sortings
3000
x350
773D
Perishable Roads
dp
,
graphs
,
shortest paths
2700
x584
773C
Prairie Partition
binary search
,
constructive algorithms
,
greedy
,
math
2200
x944
773B
Dynamic Problem Scoring
brute force
,
greedy
2000
x1146
772E
Verifying Kingdom
binary search
,
divide and conquer
,
interactive
,
trees
3200
x125
772D
Varying Kibibits
bitmasks
,
dp
2700
x583
772C
Vulnerable Kerbals
constructive algorithms
,
dp
,
graphs
,
math
,
number theory
2300
x1240
771F
Bear and Isomorphic Points
geometry
,
two pointers
3300
x80
771E
Bear and Rectangle Strips
dp
,
greedy
3000
x446
771D
Bear and Company
dp
2500
x1170
771C
Bear and Tree Jumps
dfs and similar
,
dp
,
trees
2100
x2927
768G
The Winds of Winter
binary search
,
data structures
3300
x356
768F
Barrels and boxes
brute force
,
combinatorics
,
math
,
number theory
,
probabilities
2300
x1009
768E
Game of Stones
bitmasks
,
dp
,
games
2100
x2859
768D
Jon and Orbs
dp
,
math
,
probabilities
2200
x2824
767E
Change-free
greedy
2400
x958
767D
Cartons of milk
binary search
,
data structures
,
greedy
,
sortings
,
two pointers
2100
x2211
767C
Garland
dfs and similar
,
graphs
,
greedy
,
trees
2000
x4069
767B
The Queue
brute force
,
greedy
2100
x2116
766E
Mahmoud and a xor trip
bitmasks
,
constructive algorithms
,
data structures
,
dfs and similar
,
dp
,
math
,
trees
2100
x2920
766D
Mahmoud and a Dictionary
data structures
,
dfs and similar
,
dp
,
dsu
,
graphs
2000
x3326
765G
Math, math everywhere
brute force
,
dp
,
math
,
meet-in-the-middle
,
number theory
3200
x84
765F
Souvenirs
data structures
3100
x1953
765E
Tree Folding
dfs and similar
,
dp
,
greedy
,
implementation
,
trees
2200
x1259
763E
Timofey and our friends animals
data structures
,
divide and conquer
,
dsu
2900
x487
763D
Timofey and a flat tree
data structures
,
graphs
,
hashing
,
shortest paths
,
trees
2900
x529
763C
Timofey and remoduling
brute force
,
implementation
,
math
,
number theory
2600
x706
763B
Timofey and rectangles
constructive algorithms
,
geometry
2100
x2784
762F
Tree nesting
combinatorics
,
graphs
,
trees
2800
x367
762E
Radio stations
binary search
,
data structures
2200
x1341
762D
Maximum path
dp
,
greedy
,
implementation
2300
x1507
762C
Two strings
binary search
,
hashing
,
strings
,
two pointers
2100
x2451
761F
Dasha and Photos
brute force
,
data structures
,
dp
,
implementation
2600
x408
761E
Dasha and Puzzle
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
trees
2000
x2082
758F
Geometrical Progression
brute force
,
math
,
number theory
2400
x623
758E
Broken Tree
dfs and similar
,
dp
,
graphs
,
greedy
,
trees
2600
x474
758D
Ability To Convert
constructive algorithms
,
dp
,
greedy
,
math
,
strings
2000
x2696
757G
Can Bash Save the Day?
data structures
,
divide and conquer
,
graphs
,
trees
3400
x493
757F
Team Rocket Rises Again
data structures
,
graphs
,
shortest paths
2800
x1138
757E
Bash Plays with Functions
brute force
,
combinatorics
,
dp
,
number theory
2500
x1294
757D
Felicity's Big Secret Revealed
bitmasks
,
dp
2200
x1384
756F
Long number
expression parsing
,
math
,
number theory
3400
x92
756E
Byteland coins
combinatorics
,
dp
,
math
3200
x158
756D
Bacterial Melee
brute force
,
combinatorics
,
dp
,
string suffix structures
2400
x997
756C
Nikita and stack
data structures
2200
x1324
755G
PolandBall and Many Other Balls
combinatorics
,
divide and conquer
,
dp
,
fft
,
math
,
number theory
3200
x900
755F
PolandBall and Gifts
bitmasks
,
dp
,
greedy
2600
x1310
755E
PolandBall and White-Red graph
constructive algorithms
,
graphs
,
shortest paths
2400
x826
755D
PolandBall and Polygon
data structures
2000
x2483
754E
Dasha and cyclic table
bitmasks
,
brute force
,
fft
,
strings
,
trees
2600
x486
754D
Fedor and coupons
binary search
,
data structures
,
greedy
,
sortings
2100
x2429
754C
Vladik and chat
brute force
,
constructive algorithms
,
dp
,
implementation
,
strings
2200
x916
753C
Interactive Bulls and Cows (Hard)
brute force
,
constructive algorithms
,
interactive
2500
x286
750H
New Year and Snowy Grid
dfs and similar
,
dsu
,
graphs
,
interactive
3500
x191
750G
New Year and Binary Tree Paths
bitmasks
,
brute force
,
combinatorics
,
dp
3200
x446
750F
New Year and Finding Roots
constructive algorithms
,
implementation
,
interactive
,
trees
2800
x482
750E
New Year and Old Subsequence
data structures
,
divide and conquer
,
dp
,
matrices
2600
x1529
749E
Inversions After Shuffle
data structures
,
probabilities
2400
x1039
749D
Leaving Auction
binary search
,
data structures
2000
x2535
748F
Santa Clauses and a Soccer Championship
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2300
x643
748E
Santa Claus and Tangerines
binary search
,
data structures
,
greedy
,
two pointers
2100
x1459
748D
Santa Claus and a Palindrome
constructive algorithms
,
data structures
,
greedy
2100
x1832
747F
Igor and Interesting Numbers
brute force
,
combinatorics
,
dp
,
math
2500
x416
746G
New Roads
constructive algorithms
,
graphs
,
trees
2100
x1498
746F
Music in Car
data structures
,
greedy
,
two pointers
2200
x732
744E
Hongcow Masters the Cyclic Shift
strings
,
two pointers
3200
x134
744D
Hongcow Draws a Circle
geometry
3200
x119
744C
Hongcow Buys a Deck of Cards
bitmasks
,
brute force
,
dp
2400
x1068
743E
Vladik and cards
binary search
,
bitmasks
,
brute force
,
dp
2200
x1485
741E
Arpa’s abnormal DNA and Mehrdad’s deep interest
data structures
,
string suffix structures
3400
x177
741D
Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths
data structures
,
dfs and similar
,
trees
2900
x2551
741C
Arpa’s overnight party and Mehrdad’s silent entering
constructive algorithms
,
dfs and similar
,
graphs
2600
x2524
739E
Gosha is hunting
brute force
,
data structures
,
dp
,
flows
,
math
,
probabilities
,
sortings
3000
x2117
739D
Recover a functional graph
graph matchings
3400
x186
739C
Alyona and towers
data structures
2500
x1478
737F
Dirty plates
constructive algorithms
,
math
3300
x70
737E
Tanya is 5!
graph matchings
,
graphs
,
greedy
,
schedules
3300
x121
736E
Chess Championship
constructive algorithms
,
flows
,
greedy
,
math
2900
x185
736D
Permutations
math
,
matrices
2800
x455
735E
Ostap and Tree
dp
,
trees
2500
x854
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