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Before contest
Pinely Round 4 (Div. 1 + Div. 2)
14:17:45
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→ Filter Problems
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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Problems
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Status
Standings
Custom test
Problems
#
Name
576E
Painting Edges
binary search
,
data structures
3300
x1157
576D
Flights for Regular Customers
dp
,
matrices
2700
x1338
575I
Robots protection
data structures
2800
x432
575E
Spectator Riots
geometry
2800
x282
575C
Party
bitmasks
,
brute force
,
graph matchings
2700
x219
575A
Fibonotci
data structures
,
math
,
matrices
2700
x774
573E
Bear and Bowling
data structures
,
greedy
3200
x1604
573D
Bear and Cavalry
data structures
,
divide and conquer
,
dp
3000
x459
571E
Geometric Progressions
math
3200
x254
571D
Campus
binary search
,
data structures
,
dsu
,
trees
3100
x665
571C
CNF 2
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
2500
x613
568E
Longest Increasing Subsequence
data structures
,
dp
3000
x585
568D
Sign Posts
brute force
,
geometry
,
math
2800
x306
568C
New Language
2-sat
,
greedy
2600
x808
567F
Mausoleum
dp
2400
x574
566G
Max and Min
geometry
2500
x334
566E
Restoring Map
bitmasks
,
constructive algorithms
,
trees
3200
x606
566C
Logistical Questions
dfs and similar
,
divide and conquer
,
trees
3000
x712
566B
Replicating Processes
constructive algorithms
,
greedy
2600
x263
559E
Gerald and Path
dp
,
sortings
3000
x870
559D
Randomizer
combinatorics
,
geometry
,
probabilities
2800
x430
555E
Case of Computer Network
dfs and similar
,
graphs
,
trees
2800
x2313
555D
Case of a Top Secret
binary search
,
implementation
,
math
2500
x858
553E
Kyoya and Train
dp
,
fft
,
graphs
,
math
,
probabilities
3200
x545
551E
GukiZ and GukiZiana
binary search
,
data structures
,
implementation
2500
x1755
549F
Yura and Developers
data structures
,
divide and conquer
2800
x858
549E
Sasha Circle
geometry
,
math
2700
x147
547E
Mike and Friends
data structures
,
string suffix structures
,
strings
,
trees
2800
x1994
547D
Mike and Fish
constructive algorithms
,
dfs and similar
,
graphs
2600
x2504
543E
Listening to Music
constructive algorithms
,
data structures
3200
x286
543C
Remembering Strings
bitmasks
,
dp
2500
x1371
542E
Playing on Graph
graphs
,
shortest paths
2600
x810
542D
Superhero's Job
dfs and similar
,
dp
,
hashing
,
math
,
number theory
2600
x502
542B
Duck Hunt
data structures
3100
x194
542A
Place Your Ad Here
data structures
,
sortings
2400
x545
538H
Summer Dichotomy
2-sat
,
data structures
,
dfs and similar
,
greedy
3200
x635
538G
Berserk Robot
constructive algorithms
,
math
,
sortings
3100
x447
536E
Tavas on the Path
data structures
,
divide and conquer
,
trees
3100
x380
536D
Tavas in Kansas
dp
,
games
2900
x715
535E
Tavas and Pashmaks
geometry
,
math
2600
x799
534F
Simplified Nonogram
bitmasks
,
dp
,
hashing
,
meet-in-the-middle
2400
x460
534E
Berland Local Positioning System
constructive algorithms
,
greedy
,
hashing
,
implementation
2400
x345
533F
Encoding
hashing
,
string suffix structures
,
strings
2400
x875
533D
Landmarks
data structures
,
dp
3000
x220
533A
Berland Miners
binary search
,
data structures
,
dfs and similar
,
greedy
,
trees
3000
x381
530I
Different variables
*special problem
2500
x46
528E
Triangles 3000
geometry
,
sortings
3100
x216
528D
Fuzzy Search
bitmasks
,
brute force
,
fft
2500
x2108
527E
Data Center Drama
dfs and similar
,
graphs
2600
x1922
526G
Spiders Evil Plan
greedy
,
trees
3300
x706
526F
Pudding Monsters
data structures
,
divide and conquer
3000
x2412
526E
Transmitting Levels
dp
,
implementation
2400
x1067
525D
Arthur and Walls
constructive algorithms
,
data structures
,
graphs
,
greedy
,
shortest paths
2400
x1715
524F
And Yet Another Bracket Sequence
data structures
,
greedy
,
hashing
,
string suffix structures
,
strings
2700
x525
524E
Rooks and Rectangles
data structures
,
sortings
2400
x1179
521E
Cycling City
dfs and similar
,
graphs
3100
x964
521D
Shop
greedy
2800
x1532
516E
Drazil and His Happy Friends
math
,
number theory
3100
x491
516D
Drazil and Morning Exercise
dfs and similar
,
dp
,
dsu
,
trees
,
two pointers
2800
x1246
513G3
Inversions problem
dp
3100
x260
513G2
Inversions problem
dp
,
probabilities
2400
x640
513F2
Scaygerboss
flows
2800
x336
513F1
Scaygerboss
flows
2700
x311
513E2
Subarray Cuts
dp
2700
x559
513E1
Subarray Cuts
dp
2600
x473
513D2
Constrained Tree
constructive algorithms
,
data structures
2600
x370
513D1
Constrained Tree
dfs and similar
2400
x538
512E
Fox And Polygon
constructive algorithms
,
divide and conquer
2900
x507
512D
Fox And Travelling
dp
,
trees
2900
x949
508D
Tanya and Password
dfs and similar
,
graphs
2500
x3318
506E
Mr. Kitayuta's Gift
combinatorics
,
dp
,
matrices
,
strings
3000
x712
506D
Mr. Kitayuta's Colorful Graph
brute force
,
dfs and similar
,
dsu
,
graphs
2400
x2058
505E
Mr. Kitayuta vs. Bamboos
binary search
,
greedy
2900
x1358
504E
Misha and LCP on Tree
binary search
,
dfs and similar
,
hashing
,
string suffix structures
,
trees
3000
x891
504D
Misha and XOR
bitmasks
2700
x300
501E
Misha and Palindrome Degree
binary search
,
combinatorics
,
implementation
2500
x771
500G
New Year Running
number theory
,
trees
3200
x157
500F
New Year Shopping
divide and conquer
,
dp
2700
x707
498E
Stairs and Lines
dp
,
matrices
2700
x454
498D
Traffic Jams in the Land
data structures
,
dp
,
number theory
2400
x1101
498B
Name That Tune
dp
,
probabilities
,
two pointers
2400
x1155
497E
Subsequences Return
dp
,
matrices
2900
x284
497D
Gears
brute force
,
geometry
,
math
2900
x226
494E
Sharti
data structures
,
games
3200
x311
494D
Birthday
data structures
,
dfs and similar
,
dp
,
trees
2700
x521
494C
Helping People
dp
,
probabilities
2600
x845
493E
Vasya and Polynomial
math
2800
x481
487E
Tourists
data structures
,
dfs and similar
,
graphs
,
trees
3200
x2251
487D
Conveyor Belts
data structures
2700
x861
484E
Sign on Fence
binary search
,
constructive algorithms
,
data structures
2500
x2223
484D
Kindergarten
data structures
,
dp
,
greedy
2400
x2516
484C
Strange Sorting
implementation
,
math
2600
x587
482E
ELCA
data structures
,
trees
3200
x176
482D
Random Function and Tree
combinatorics
,
dp
,
trees
2700
x525
482C
Game with Strings
bitmasks
,
dp
,
probabilities
2600
x891
480E
Parking Lot
data structures
,
divide and conquer
2800
x530
480D
Parcels
dp
,
graphs
2600
x458
478E
Wavy numbers
brute force
,
dfs and similar
,
meet-in-the-middle
,
sortings
2900
x219
477E
Dreamoon and Notepad
data structures
3100
x133
477D
Dreamoon and Binary
dp
,
strings
2700
x520
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