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47 problems · filtered by 3 tags
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Rating
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2193H
Remove the Grail Tree
dfs and similar
dp
graphs
greedy
implementation
trees
+
2400
1.1k
2150F
Cycle Closing
constructive algorithms
graphs
implementation
shortest paths
trees
+
3000
224
2127H
23 Rises Again
brute force
dfs and similar
dp
flows
graph matchings
graphs
greedy
implementation
probabilities
trees
+
3100
1.9k
2126F
1-1-1, Free Tree!
brute force
data structures
dfs and similar
graphs
implementation
trees
+
2000
4.4k
2113E
From Kazan with Love
dfs and similar
graphs
implementation
trees
+
2800
430
2108E
Spruce Dispute
constructive algorithms
dfs and similar
graphs
greedy
implementation
shortest paths
trees
+
2600
922
2097B
Baggage Claim
combinatorics
dfs and similar
dp
dsu
graphs
implementation
math
trees
+
2300
2k
2063F1
Counting Is Not Fun (Easy Version)
combinatorics
data structures
dfs and similar
dp
dsu
graphs
hashing
implementation
math
trees
+
2400
1.6k
2063F2
Counting Is Not Fun (Hard Version)
combinatorics
data structures
dfs and similar
dsu
graphs
implementation
trees
+
2700
951
2062E2
The Game (Hard Version)
data structures
dfs and similar
games
graphs
implementation
trees
+
3000
464
2044G1
Medium Demon Problem (easy version)
dfs and similar
graph matchings
graphs
implementation
trees
+
1700
7.6k
2044G2
Medium Demon Problem (hard version)
dfs and similar
dp
dsu
graphs
implementation
trees
+
1900
4k
2032D
Genokraken
constructive algorithms
data structures
graphs
greedy
implementation
interactive
trees
two pointers
+
1800
6.3k
2021E1
Digital Village (Easy Version)
brute force
data structures
dfs and similar
dp
dsu
fft
graphs
greedy
implementation
math
trees
+
2300
2k
1949J
Amanda the Amoeba
graphs
implementation
trees
two pointers
+
2600
550
1927F
Microcycle
data structures
dfs and similar
dsu
graphs
greedy
implementation
sortings
trees
+
1900
5.6k
1926G
Vlad and Trouble at MIT
dfs and similar
dp
flows
graphs
greedy
implementation
trees
+
1900
4.7k
1918F
Caterpillar on a Tree
dfs and similar
graphs
greedy
implementation
sortings
trees
+
2500
1.2k
1904E
Tree Queries
data structures
dfs and similar
graphs
implementation
trees
+
2500
1.4k
1904F
Beautiful Tree
data structures
dfs and similar
graphs
implementation
trees
+
2800
581
1902F
Trees and XOR Queries Again
data structures
dfs and similar
divide and conquer
graphs
implementation
math
trees
+
2400
1.5k
1889D
Game of Stacks
brute force
dfs and similar
graphs
implementation
trees
+
3000
982
1879E
Interactive Game with Coloring
brute force
constructive algorithms
dfs and similar
graphs
implementation
interactive
trees
+
2400
1.6k
1868D
Flower-like Pseudotree
constructive algorithms
graphs
greedy
implementation
trees
+
3000
418
1866K
Keen Tree Calculation
binary search
data structures
dp
geometry
graphs
implementation
trees
+
2500
585
1851G
Vlad and the Mountains
binary search
data structures
dsu
graphs
implementation
sortings
trees
two pointers
+
2000
4.2k
1815B
Sum Graph
brute force
constructive algorithms
graphs
implementation
interactive
shortest paths
trees
+
2000
3.7k
1788F
XOR, Tree, and Queries
bitmasks
constructive algorithms
dfs and similar
dsu
graphs
greedy
implementation
trees
+
2500
1.2k
1675D
Vertical Paths
graphs
implementation
trees
+
1300
15.1k
1648E
Air Reform
data structures
dfs and similar
divide and conquer
dsu
graphs
implementation
trees
+
3200
601
1617E
Christmas Chocolates
dfs and similar
dp
games
graphs
implementation
math
number theory
shortest paths
trees
+
2700
1.1k
1609D
Social Network
dsu
graphs
greedy
implementation
trees
+
1600
8.6k
1463E
Plan of Lectures
constructive algorithms
dfs and similar
dsu
graphs
implementation
sortings
trees
+
2400
1.8k
1416D
Graph and Queries
data structures
dsu
graphs
implementation
trees
+
2600
2.9k
1388D
Captain Flint and Treasure
data structures
dfs and similar
graphs
greedy
implementation
trees
+
2000
7k
1364D
Ehab's Last Corollary
constructive algorithms
dfs and similar
graphs
greedy
implementation
trees
+
2100
5.1k
1244D
Paint the Tree
brute force
constructive algorithms
dp
graphs
implementation
trees
+
1800
8.4k
1174F
Ehab and the Big Finale
constructive algorithms
divide and conquer
graphs
implementation
interactive
trees
+
2400
2.1k
1010D
Mars rover
dfs and similar
graphs
implementation
trees
+
2000
2.6k
830E
Perpetual Motion Machine
constructive algorithms
dp
graphs
implementation
math
trees
+
3100
373
812D
Sagheer and Kindergarten
dfs and similar
graphs
implementation
trees
+
2700
382
776F
Sherlock's bet to Moriarty
constructive algorithms
data structures
divide and conquer
geometry
graphs
implementation
trees
+
2800
543
763A
Timofey and a tree
dfs and similar
dp
dsu
graphs
implementation
trees
+
1600
12.1k
382D
Ksenia and Pawns
dfs and similar
graphs
implementation
trees
+
2200
753
117E
Tree or not Tree
data structures
divide and conquer
graphs
implementation
trees
+
2900
451
87D
Beautiful Road
dfs and similar
dp
dsu
graphs
implementation
sortings
trees
+
2300
1.1k
81E
Pairs
dfs and similar
dp
dsu
graphs
implementation
trees
+
2700
460
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