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Pinely Round 4 (Div. 1 + Div. 2)
09:59:02
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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
1369E
DeadLee
data structures
,
dfs and similar
,
greedy
,
implementation
,
sortings
2400
x2144
1368H2
Breadboard Capacity (hard version)
3500
x223
1368H1
Breadboard Capacity (easy version)
dp
,
flows
,
greedy
3300
x344
1368G
Shifting Dominoes
data structures
,
geometry
,
graphs
,
trees
3200
x590
1368F
Lamps on a Circle
games
,
implementation
,
interactive
,
math
2600
x1027
1368E
Ski Accidents
constructive algorithms
,
graphs
,
greedy
2500
x2186
1367F2
Flying Sort (Hard Version)
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
2400
x1635
1366G
Construct the String
data structures
,
dp
,
strings
2700
x538
1366F
Jog Around The Graph
binary search
,
dp
,
geometry
,
graphs
2700
x793
1365G
Secure Password
bitmasks
,
combinatorics
,
constructive algorithms
,
interactive
,
math
2800
x1127
1364E
X-OR
bitmasks
,
constructive algorithms
,
divide and conquer
,
interactive
,
probabilities
2700
x1405
1363F
Rotating Substrings
dp
,
strings
2600
x1473
1361F
Johnny and New Toy
data structures
,
implementation
,
math
3300
x151
1361E
James and the Chase
dfs and similar
,
graphs
,
probabilities
,
trees
3000
x667
1361D
Johnny and James
greedy
,
implementation
,
math
,
trees
2900
x312
1361C
Johnny and Megan's Necklace
binary search
,
bitmasks
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
2500
x1607
1359F
RC Kaboom Show
binary search
,
brute force
,
data structures
,
geometry
,
math
2900
x533
1358F
Tasty Cookie
binary search
,
constructive algorithms
,
greedy
,
implementation
2700
x441
1358E
Are You Fired?
constructive algorithms
,
data structures
,
greedy
,
implementation
2400
x2287
1355F
Guess Divisors Count
constructive algorithms
,
interactive
,
number theory
2600
x830
1354G
Find a Gift
binary search
,
interactive
,
probabilities
2600
x765
1354F
Summoning Minions
constructive algorithms
,
dp
,
flows
,
graph matchings
,
greedy
,
sortings
2500
x1181
1349F2
Slime and Sequences (Hard Version)
dp
,
fft
,
math
3500
x110
1349F1
Slime and Sequences (Easy Version)
dp
,
fft
,
math
3100
x405
1349E
Slime and Hats
constructive algorithms
,
dp
,
greedy
3500
x88
1349D
Slime and Biscuits
math
,
probabilities
3200
x882
1348F
Phoenix and Memory
data structures
,
dfs and similar
,
graphs
,
greedy
2600
x790
1348E
Phoenix and Berries
brute force
,
dp
,
greedy
,
math
2400
x2173
1346I
Pac-Man 2.0
*special problem
,
dp
2900
x48
1346H
Game with Segments
*special problem
,
data structures
,
games
2700
x49
1344F
Piet's Palette
matrices
3200
x447
1344E
Train Tracks
data structures
,
trees
3100
x456
1344D
Résumé Review
binary search
,
greedy
,
math
2700
x1145
1344C
Quantifier Question
dfs and similar
,
dp
,
graphs
,
math
2600
x1839
1343F
Restore the Permutation by Sorted Segments
brute force
,
constructive algorithms
,
data structures
,
greedy
,
implementation
2400
x1247
1342F
Make It Ascending
bitmasks
,
brute force
,
dp
3000
x701
1340F
Nastya and CBS
brute force
,
data structures
,
hashing
3300
x497
1340E
Nastya and Bees
graphs
,
interactive
,
probabilities
3000
x53
1340D
Nastya and Time Machine
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2600
x983
1340C
Nastya and Unexpected Guest
dfs and similar
,
dp
,
graphs
,
shortest paths
2400
x2210
1338E
JYPnation
graphs
3500
x239
1338D
Nested Rubber Bands
constructive algorithms
,
dfs and similar
,
dp
,
math
,
trees
2700
x996
1336F
Journey
data structures
,
divide and conquer
,
graphs
,
trees
3500
x203
1336E2
Chiori and Doll Picking (hard version)
bitmasks
,
brute force
,
combinatorics
,
math
3500
x297
1336E1
Chiori and Doll Picking (easy version)
bitmasks
,
brute force
,
combinatorics
,
math
2700
x658
1336D
Yui and Mahjong Set
constructive algorithms
,
interactive
3200
x470
1334G
Substring Search
bitmasks
,
brute force
,
fft
2900
x358
1334F
Strange Function
binary search
,
data structures
,
dp
,
greedy
2500
x1287
1333E
Road to 1600
brute force
,
constructive algorithms
2400
x1679
1332G
No Monotone Triples
data structures
3100
x295
1332F
Independent Set
dfs and similar
,
dp
,
trees
2500
x988
1329E
Dreamoon Loves AA
binary search
,
greedy
3300
x178
1329D
Dreamoon Likes Strings
constructive algorithms
,
data structures
3100
x392
1329C
Drazil Likes Heap
constructive algorithms
,
data structures
,
greedy
,
implementation
2400
x1698
1327G
Letters and Question Marks
bitmasks
,
dp
,
string suffix structures
2800
x421
1327F
AND Segments
bitmasks
,
combinatorics
,
data structures
,
dp
,
two pointers
2500
x1629
1326G
Spiderweb Trees
dp
,
geometry
,
trees
3500
x75
1326F2
Wise Men (Hard Version)
bitmasks
,
dp
,
math
3200
x479
1326F1
Wise Men (Easy Version)
bitmasks
,
brute force
,
dp
,
meet-in-the-middle
2600
x832
1326E
Bombs
data structures
,
two pointers
2400
x2175
1325F
Ehab's Last Theorem
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
2500
x1915
1325E
Ehab's REAL Number Theory Problem
brute force
,
dfs and similar
,
graphs
,
number theory
,
shortest paths
2600
x2034
1322F
Assigning Fares
dp
,
trees
3500
x94
1322E
Median Mountain Range
data structures
3300
x300
1322D
Reality Show
bitmasks
,
dp
2800
x707
1320F
Blocks and Sensors
brute force
3500
x154
1320E
Treeland and Viruses
data structures
,
dfs and similar
,
dp
,
shortest paths
,
trees
3000
x803
1320D
Reachable Strings
data structures
,
hashing
,
strings
2500
x1424
1316F
Battalion Strength
data structures
,
divide and conquer
,
probabilities
2800
x798
1313E
Concatenation with intersection
data structures
,
hashing
,
strings
,
two pointers
2700
x530
1313D
Happy New Year
bitmasks
,
dp
,
implementation
2500
x1321
1312G
Autocompletion
data structures
,
dfs and similar
,
dp
2600
x972
1312F
Attack on Red Kingdom
games
,
two pointers
2500
x892
1310F
Bad Cryptography
math
,
number theory
3400
x72
1310E
Strange Function
dp
2900
x273
1310C
Au Pont Rouge
binary search
,
dp
,
strings
2800
x497
1310B
Double Elimination
dp
,
implementation
2500
x493
1307G
Cow and Exercise
flows
,
graphs
,
shortest paths
3100
x493
1307F
Cow and Vacation
dfs and similar
,
dsu
,
trees
3300
x576
1307E
Cow and Treats
binary search
,
combinatorics
,
dp
,
greedy
,
implementation
,
math
2500
x1268
1305H
Kuroni the Private Tutor
binary search
,
greedy
3500
x114
1305G
Kuroni and Antihype
bitmasks
,
brute force
,
dp
,
dsu
,
graphs
3500
x966
1305F
Kuroni and the Punishment
math
,
number theory
,
probabilities
2500
x2578
1304F2
Animal Observation (hard version)
data structures
,
dp
,
greedy
2400
x1499
1303G
Sum of Prefix Sums
data structures
,
divide and conquer
,
geometry
,
trees
2700
x775
1303F
Number of Components
dsu
,
implementation
2800
x519
1301F
Super Jaber
dfs and similar
,
graphs
,
implementation
,
shortest paths
2600
x1236
1301E
Nanosoft
binary search
,
data structures
,
dp
,
implementation
2500
x1491
1299E
So Mean
interactive
,
math
3400
x155
1299D
Around the World
bitmasks
,
combinatorics
,
dfs and similar
,
dp
,
graphs
,
graphs
,
math
,
trees
3000
x425
1295F
Good Contest
combinatorics
,
dp
,
probabilities
2700
x1175
1292F
Nora's Toy Boxes
bitmasks
,
combinatorics
,
dp
3500
x309
1292E
Rin and The Unknown Flower
constructive algorithms
,
greedy
,
interactive
,
math
3500
x331
1292D
Chaotic V.
dp
,
graphs
,
greedy
,
math
,
number theory
,
trees
2700
x790
1291F
Coffee Varieties (easy version)
graphs
,
interactive
2800
x652
1290F
Making Shapes
dp
3500
x359
1290E
Cartesian Tree
data structures
3300
x532
1290D
Coffee Varieties (hard version)
constructive algorithms
,
graphs
,
interactive
3000
x816
1290C
Prefix Enlightenment
dfs and similar
,
dsu
,
graphs
2400
x1715
1288F
Red-Blue Graph
constructive algorithms
,
flows
2900
x451
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