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179 problems · filtered by 2 tags
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Name
✎
Rating
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2239E
The end of this world,
data structures
divide and conquer
dsu
graphs
+
3300
154
2236G
Criterion in Burlandia
binary search
bitmasks
brute force
data structures
dfs and similar
divide and conquer
implementation
trees
two pointers
+
2600
385
2223E
Zhily and Permutation
data structures
divide and conquer
trees
+
3500
56
2222F
Building Tree
data structures
divide and conquer
dsu
graphs
implementation
+
2600
716
2207C
Where's My Water?
data structures
divide and conquer
dp
math
+
1600
6.4k
2205D
Simons and Beating Peaks
data structures
divide and conquer
dp
greedy
implementation
trees
+
1700
5.6k
2187F1
Al Fine (Maximizing Version)
binary search
data structures
divide and conquer
trees
+
3100
256
2185F
BattleCows
data structures
divide and conquer
implementation
+
1700
5.5k
2173F
Isla's Memory Thresholds
binary search
brute force
data structures
divide and conquer
math
+
2600
623
2172J
Sliding Tiles
data structures
divide and conquer
dsu
+
2300
606
2158E
Sink
data structures
divide and conquer
dsu
graphs
implementation
+
2600
665
2149G
Buratsuta 3
binary search
brute force
data structures
divide and conquer
probabilities
+
2100
2.8k
2146E
Yet Another MEX Problem
brute force
constructive algorithms
data structures
divide and conquer
greedy
hashing
+
2300
2.2k
2126G2
Big Wins! (hard version)
binary search
data structures
divide and conquer
dsu
trees
two pointers
+
2400
1.2k
2122D
Traffic Lights
brute force
data structures
divide and conquer
dp
graphs
greedy
shortest paths
+
2400
2.8k
2121G
Gangsta
data structures
divide and conquer
math
sortings
+
1900
5.5k
2117H
Incessant Rain
data structures
divide and conquer
sortings
+
2500
1k
2104G
Modulo 3
data structures
divide and conquer
dsu
graphs
trees
+
2700
553
2101B
Quartet Swapping
brute force
data structures
divide and conquer
greedy
sortings
+
1800
8.1k
2077E
Another Folding Strip
combinatorics
constructive algorithms
data structures
divide and conquer
dp
greedy
math
+
2700
627
2070E
Game with Binary String
constructive algorithms
data structures
divide and conquer
games
greedy
math
+
2200
1.9k
2069F
Graph Inclusion
data structures
dfs and similar
divide and conquer
dsu
graphs
+
2800
824
2065H
Bro Thinks He's Him
combinatorics
data structures
divide and conquer
dp
math
matrices
+
2200
2k
2056D
Unique Median
binary search
brute force
combinatorics
data structures
divide and conquer
dp
+
2200
3.7k
2050F
Maximum modulo equality
data structures
divide and conquer
math
number theory
+
1700
11.3k
2048F
Kevin and Math Class
brute force
data structures
divide and conquer
dp
implementation
math
trees
+
2500
1.3k
2042E
Vertex Pairs
binary search
brute force
data structures
dfs and similar
divide and conquer
greedy
implementation
trees
+
2900
535
2041J
Bottle Arrangement
data structures
divide and conquer
dp
dsu
greedy
+
2700
273
2035D
Yet Another Real Number Problem
binary search
data structures
divide and conquer
greedy
implementation
math
+
1800
5.9k
2026F
Bermart Ice Cream
data structures
dfs and similar
divide and conquer
dp
implementation
trees
+
2700
413
2018E1
Complex Segments (Easy Version)
binary search
data structures
divide and conquer
dsu
greedy
math
sortings
+
3300
246
2018E2
Complex Segments (Hard Version)
binary search
data structures
divide and conquer
dsu
greedy
math
sortings
+
3400
210
2014H
Robin Hood Archery
data structures
divide and conquer
greedy
hashing
+
1900
6k
2011I
Stack and Queue
*special
data structures
divide and conquer
+
unrated
24
2006C
Eri and Expanded Sets
data structures
divide and conquer
math
number theory
two pointers
+
2300
2.1k
2005D
Alter the GCD
binary search
brute force
data structures
divide and conquer
implementation
number theory
+
2400
1.3k
2003E2
Turtle and Inversions (Hard Version)
brute force
data structures
divide and conquer
dp
greedy
math
two pointers
+
2700
654
1998E1
Eliminating Balls With Merging (Easy Version)
binary search
brute force
data structures
divide and conquer
greedy
+
2200
2.3k
1998E2
Eliminating Balls With Merging (Hard Version)
binary search
brute force
data structures
divide and conquer
greedy
implementation
+
2500
927
1997E
Level Up
binary search
brute force
data structures
divide and conquer
implementation
+
2200
3.9k
1990E2
Catch the Mole(Hard Version)
binary search
data structures
dfs and similar
divide and conquer
interactive
trees
+
2600
1.2k
1990F
Polygonal Segments
brute force
data structures
divide and conquer
dp
greedy
two pointers
+
2800
464
1988E
Range Minimum Sum
binary search
brute force
data structures
divide and conquer
implementation
+
2300
1.9k
1983D
Swap Dilemma
constructive algorithms
data structures
divide and conquer
greedy
math
sortings
+
1700
11.5k
1976D
Invertible Bracket Sequences
binary search
combinatorics
data structures
divide and conquer
implementation
two pointers
+
2000
5.9k
1969E
Unique Array
binary search
data structures
divide and conquer
dp
greedy
+
2400
1.9k
1957F1
Frequency Mismatch (Easy Version)
binary search
data structures
divide and conquer
hashing
probabilities
trees
+
2600
706
1940C
Burenka and Pether
*special
data structures
dfs and similar
divide and conquer
dsu
graphs
sortings
trees
+
unrated
44
1921G
Mischievous Shooter
brute force
data structures
divide and conquer
dp
implementation
+
2200
1.5k
1915F
Greetings
data structures
divide and conquer
sortings
+
1500
23.5k
1913D
Array Collapse
data structures
divide and conquer
dp
trees
+
2100
4.3k
1905F
Field Should Not Be Empty
brute force
data structures
divide and conquer
+
2600
796
1904D2
Set To Max (Hard Version)
constructive algorithms
data structures
divide and conquer
greedy
implementation
sortings
+
1800
5.8k
1902F
Trees and XOR Queries Again
data structures
dfs and similar
divide and conquer
graphs
implementation
math
trees
+
2400
1.5k
1896D
Ones and Twos
binary search
data structures
divide and conquer
math
two pointers
+
1700
7.1k
1887D
Split
binary search
data structures
divide and conquer
dsu
math
trees
two pointers
+
2700
1.3k
1859F
Teleportation in Byteland
data structures
dfs and similar
divide and conquer
graphs
shortest paths
trees
+
3200
582
1849E
Max to the Right of Min
binary search
data structures
divide and conquer
dp
dsu
two pointers
+
2300
2.3k
1849F
XOR Partition
binary search
bitmasks
data structures
divide and conquer
greedy
trees
+
2700
911
1843F2
Omsk Metro (hard version)
data structures
dfs and similar
divide and conquer
dp
math
trees
+
2300
2.2k
1801E
Gasoline prices
data structures
divide and conquer
dsu
hashing
trees
+
3000
748
1797F
Li Hua and Path
data structures
dfs and similar
divide and conquer
dsu
trees
+
3000
666
1793F
Rebrending
brute force
data structures
divide and conquer
implementation
+
2600
1.7k
1787I
Treasure Hunt
data structures
divide and conquer
two pointers
+
3400
424
1783G
Weighed Tree Radius
data structures
divide and conquer
implementation
trees
+
2800
625
1777F
Comfortably Numb
bitmasks
data structures
divide and conquer
strings
trees
+
2400
1.5k
1766E
Decomposition
binary search
brute force
data structures
divide and conquer
dp
two pointers
+
2300
1.5k
1750E
Bracket Cost
binary search
data structures
divide and conquer
dp
greedy
strings
+
2400
1.7k
1748E
Yet Another Array Counting Problem
binary search
data structures
divide and conquer
dp
flows
math
trees
+
2300
2.8k
1740I
Arranging Crystal Balls
data structures
divide and conquer
dp
geometry
graphs
number theory
+
3500
182
1730E
Maximums and Minimums
combinatorics
data structures
divide and conquer
number theory
+
2700
815
1716E
Swap and Maximum Block
bitmasks
data structures
dfs and similar
divide and conquer
dp
+
2500
1.4k
1715E
Long Way Home
data structures
divide and conquer
dp
geometry
graphs
greedy
shortest paths
+
2400
2.4k
1706E
Qpwoeirut and Vertices
binary search
data structures
dfs and similar
divide and conquer
dsu
greedy
trees
+
2300
4k
1696D
Permutation Graph
binary search
constructive algorithms
data structures
divide and conquer
greedy
shortest paths
+
1900
6.1k
1693D
Decinc Dividing
brute force
data structures
divide and conquer
dp
greedy
+
2800
1.2k
1691D
Max GEQ Sum
binary search
constructive algorithms
data structures
divide and conquer
implementation
two pointers
+
1800
7.7k
1681F
Unique Occurrences
data structures
dfs and similar
divide and conquer
dp
dsu
trees
+
2300
2.4k
1676H2
Maximum Crossings (Hard Version)
data structures
divide and conquer
sortings
+
1500
13.5k
1665E
MinimizOR
bitmasks
brute force
data structures
divide and conquer
greedy
implementation
two pointers
+
2500
1.9k
1654F
Minimal String Xoration
bitmasks
data structures
divide and conquer
greedy
hashing
sortings
strings
+
2800
1.5k
1648D
Serious Business
data structures
divide and conquer
dp
implementation
shortest paths
+
2800
1.1k
1648E
Air Reform
data structures
dfs and similar
divide and conquer
dsu
graphs
implementation
trees
+
3200
601
1633F
Perfect Matching
data structures
divide and conquer
interactive
trees
+
2800
652
1625E1
Cats on the Upgrade (easy version)
brute force
data structures
dfs and similar
divide and conquer
dp
graphs
trees
+
2500
1.2k
1619H
Permutation and Queries
brute force
data structures
divide and conquer
two pointers
+
2400
1.5k
1616H
Keep XOR Low
bitmasks
combinatorics
data structures
divide and conquer
dp
math
+
3000
1.4k
1615H
Reindeer Games
binary search
constructive algorithms
data structures
divide and conquer
flows
graphs
shortest paths
+
3000
457
1609F
Interesting Sections
data structures
divide and conquer
meet-in-the-middle
two pointers
+
2800
1.1k
1601C
Optimal Insertion
data structures
divide and conquer
dp
greedy
sortings
+
2300
2.4k
1583H
Omkar and Tours
data structures
divide and conquer
sortings
trees
+
3300
505
1575L
Longest Array Deconstruction
data structures
divide and conquer
dp
sortings
+
2100
1.8k
1567E
Non-Decreasing Dilemma
data structures
divide and conquer
math
+
2200
4.2k
1550F
Jumping Around
binary search
data structures
divide and conquer
dp
dsu
graphs
shortest paths
+
2700
958
1548B
Integers Have Friends
binary search
data structures
divide and conquer
math
number theory
two pointers
+
1800
11.6k
1548E
Gregor and the Two Painters
data structures
divide and conquer
graphs
greedy
math
+
3400
618
1547F
Array Stabilization (GCD version)
binary search
brute force
data structures
divide and conquer
number theory
two pointers
+
1900
7.2k
1527E
Partition Game
binary search
data structures
divide and conquer
dp
+
2500
3.1k
1523G
Try Booking
data structures
divide and conquer
+
3200
555
1503F
Balance the Cards
constructive algorithms
data structures
divide and conquer
geometry
graphs
implementation
+
3500
239
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