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Problemset
52 problems · filtered by 4 tags
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Name
✎
Rating
↕
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2187C
Jerry and Tom
data structures
dfs and similar
dsu
games
graphs
greedy
trees
+
2300
1.5k
2164F2
Chain Prefix Rank (Hard Version)
binary search
combinatorics
data structures
dfs and similar
dp
graphs
math
trees
+
2900
648
2155F
Juan's Colorful Tree
data structures
dfs and similar
dsu
graphs
meet-in-the-middle
trees
+
2800
745
2126F
1-1-1, Free Tree!
brute force
data structures
dfs and similar
graphs
implementation
trees
+
2000
4.4k
2065F
Skibidus and Slay
data structures
dfs and similar
graphs
greedy
trees
+
1700
7.3k
2063C
Remove Exactly Two
brute force
data structures
dfs and similar
dp
graphs
greedy
sortings
trees
+
1600
15.1k
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
2062E1
The Game (Easy Version)
data structures
dfs and similar
games
graphs
greedy
trees
+
2000
4.4k
2062E2
The Game (Hard Version)
data structures
dfs and similar
games
graphs
implementation
trees
+
3000
464
2029D
Cool Graph
constructive algorithms
data structures
dfs and similar
dsu
graphs
greedy
trees
+
1900
4k
2021E1
Digital Village (Easy Version)
brute force
data structures
dfs and similar
dp
dsu
fft
graphs
greedy
implementation
math
trees
+
2300
2k
2021E3
Digital Village (Extreme Version)
data structures
dfs and similar
dp
dsu
graphs
greedy
math
trees
+
2800
725
2002D1
DFS Checker (Easy Version)
brute force
data structures
dfs and similar
graphs
hashing
trees
+
1900
5.2k
2002D2
DFS Checker (Hard Version)
binary search
data structures
dfs and similar
graphs
hashing
trees
+
2300
2.9k
1980G
Yasya and the Mysterious Tree
bitmasks
data structures
dfs and similar
graphs
greedy
strings
trees
+
2300
1.8k
1940C
Burenka and Pether
*special
data structures
dfs and similar
divide and conquer
dsu
graphs
sortings
trees
+
unrated
44
1927F
Microcycle
data structures
dfs and similar
dsu
graphs
greedy
implementation
sortings
trees
+
1900
5.6k
1923E
Count Paths
data structures
dfs and similar
dp
dsu
graphs
trees
+
2000
5.3k
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
1859F
Teleportation in Byteland
data structures
dfs and similar
divide and conquer
graphs
shortest paths
trees
+
3200
582
1843F1
Omsk Metro (simple version)
data structures
dfs and similar
dp
graphs
greedy
math
trees
+
1800
6.5k
1763F
Edge Queries
data structures
dfs and similar
dp
dsu
graphs
trees
+
3000
750
1739D
Reset K Edges
binary search
data structures
dfs and similar
graphs
greedy
trees
+
1900
6.4k
1738D
Permutation Addicts
constructive algorithms
data structures
dfs and similar
dsu
graphs
trees
+
1900
3.8k
1654G
Snowy Mountain
data structures
dfs and similar
graphs
greedy
shortest paths
trees
+
2900
474
1648E
Air Reform
data structures
dfs and similar
divide and conquer
dsu
graphs
implementation
trees
+
3200
601
1633E
Spanning Tree Queries
binary search
data structures
dfs and similar
dsu
graphs
greedy
math
sortings
trees
+
2400
1.8k
1632E1
Distance Tree (easy version)
binary search
data structures
dfs and similar
graphs
shortest paths
trees
+
2400
1.4k
1625E1
Cats on the Upgrade (easy version)
brute force
data structures
dfs and similar
divide and conquer
dp
graphs
trees
+
2500
1.2k
1625E2
Cats on the Upgrade (hard version)
binary search
data structures
dfs and similar
graphs
trees
+
2800
705
1615E
Purple Crayon
data structures
dfs and similar
games
graphs
greedy
math
sortings
trees
+
2400
1.8k
1508C
Complete the MST
bitmasks
brute force
data structures
dfs and similar
dsu
graphs
greedy
trees
+
2500
1.8k
1403B
Spring cleaning
*special
data structures
dfs and similar
graphs
trees
+
2300
437
1388D
Captain Flint and Treasure
data structures
dfs and similar
graphs
greedy
implementation
trees
+
2000
7k
1286B
Numbers on Tree
constructive algorithms
data structures
dfs and similar
graphs
greedy
trees
+
1800
5.7k
1263F
Economic Difficulties
data structures
dfs and similar
dp
flows
graphs
trees
+
2400
982
1209F
Koala and Notebook
data structures
dfs and similar
graphs
shortest paths
strings
trees
+
2600
1.4k
1111E
Tree
data structures
dfs and similar
dp
graphs
trees
+
2500
1.2k
1042F
Leaf Sets
data structures
dfs and similar
dsu
graphs
greedy
sortings
trees
+
2400
1.6k
958B2
Maximum Control (medium)
data structures
dfs and similar
graphs
greedy
trees
+
2200
765
827D
Best Edge Weight
data structures
dfs and similar
graphs
trees
+
2700
1.5k
739B
Alyona and a tree
binary search
data structures
dfs and similar
graphs
trees
+
1900
5.2k
708C
Centroids
data structures
dfs and similar
dp
graphs
greedy
trees
+
2300
4.5k
639F
Bear and Chemistry
data structures
dfs and similar
graphs
trees
+
3300
610
609E
Minimum spanning tree for each edge
data structures
dfs and similar
dsu
graphs
trees
+
2100
10.7k
593D
Happy Tree Party
data structures
dfs and similar
graphs
math
trees
+
2400
1.5k
487E
Tourists
data structures
dfs and similar
graphs
trees
+
3200
3k
343D
Water Tree
data structures
dfs and similar
graphs
trees
+
2100
7.1k
231E
Cactus
data structures
dfs and similar
dp
graphs
trees
+
2100
2.4k
showing 1–52 of 52