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91 problems · filtered by 3 tags
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Name
✎
Rating
↕
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2208D1
Tree Orientation (Easy Version)
constructive algorithms
dfs and similar
dsu
graphs
greedy
matrices
trees
+
1800
4.8k
2183D1
Tree Coloring (Easy Version)
constructive algorithms
dfs and similar
greedy
trees
+
1500
9.3k
2183D2
Tree Coloring (Hard Version)
combinatorics
constructive algorithms
data structures
dfs and similar
greedy
implementation
trees
+
2100
2.6k
2154D
Catshock
constructive algorithms
dfs and similar
graphs
trees
two pointers
+
1900
5k
2134D
Sliding Tree
constructive algorithms
dfs and similar
greedy
implementation
trees
+
2300
3.8k
2133E
I Yearned For The Mines
constructive algorithms
dfs and similar
dp
greedy
trees
+
2500
1.8k
2127E
Ancient Tree
constructive algorithms
data structures
dfs and similar
dsu
greedy
trees
+
2100
4.4k
2115B
Gellyfish and Camellia Japonica
brute force
constructive algorithms
dfs and similar
dp
graphs
greedy
trees
+
2100
5k
2112D
Reachability and Tree
constructive algorithms
dfs and similar
graphs
trees
+
1700
9.8k
2108E
Spruce Dispute
constructive algorithms
dfs and similar
graphs
greedy
implementation
shortest paths
trees
+
2600
922
2071C
Trapmigiano Reggiano
constructive algorithms
data structures
dfs and similar
dp
greedy
sortings
trees
+
1700
9.9k
2040D
Non Prime Tree
brute force
constructive algorithms
dfs and similar
greedy
number theory
trees
two pointers
+
1900
5.9k
2029D
Cool Graph
constructive algorithms
data structures
dfs and similar
dsu
graphs
greedy
trees
+
1900
4k
2025F
Choose Your Queries
constructive algorithms
dfs and similar
dp
graphs
greedy
trees
+
2700
1.1k
2006A
Iris and Game on the Tree
constructive algorithms
dfs and similar
games
graphs
greedy
trees
+
1700
9.8k
1994F
Stardew Valley
constructive algorithms
dfs and similar
graphs
trees
+
2500
1.6k
1943C
Tree Compass
constructive algorithms
dfs and similar
greedy
trees
+
2300
2.7k
1939B
Evidence Board
*special
constructive algorithms
dfs and similar
graphs
trees
+
unrated
308
1935F
Andrey's Tree
binary search
constructive algorithms
data structures
dfs and similar
dsu
greedy
implementation
trees
+
2800
634
1930H
Interactive Mex Tree
constructive algorithms
dfs and similar
interactive
trees
+
3300
379
1879E
Interactive Game with Coloring
brute force
constructive algorithms
dfs and similar
graphs
implementation
interactive
trees
+
2400
1.6k
1844G
Tree Weights
bitmasks
constructive algorithms
data structures
dfs and similar
implementation
math
matrices
number theory
trees
+
3000
1.2k
1833G
Ksyusha and Chinchilla
constructive algorithms
dfs and similar
dp
dsu
greedy
implementation
trees
+
1800
6.5k
1827E
Bus Routes
binary search
constructive algorithms
dfs and similar
greedy
trees
+
3400
1k
1795F
Blocking Chips
binary search
constructive algorithms
dfs and similar
greedy
trees
+
2400
1.4k
1788F
XOR, Tree, and Queries
bitmasks
constructive algorithms
dfs and similar
dsu
graphs
greedy
implementation
trees
+
2500
1.2k
1764F
Doremy's Experimental Tree
brute force
constructive algorithms
dfs and similar
dsu
sortings
trees
+
2500
1.3k
1740E
Hanging Hearts
constructive algorithms
data structures
dfs and similar
dp
greedy
trees
+
1800
5.1k
1738D
Permutation Addicts
constructive algorithms
data structures
dfs and similar
dsu
graphs
trees
+
1900
3.8k
1726D
Edge Split
brute force
constructive algorithms
dfs and similar
dsu
graphs
probabilities
trees
+
2000
4.2k
1696F
Tree Recovery
brute force
constructive algorithms
dfs and similar
dsu
graphs
trees
+
2600
1.2k
1695D1
Tree Queries (Easy Version)
brute force
constructive algorithms
dfs and similar
dp
greedy
trees
+
2200
2.5k
1695D2
Tree Queries (Hard Version)
constructive algorithms
dfs and similar
dp
greedy
trees
+
2300
2.3k
1682E
Unordered Swaps
constructive algorithms
dfs and similar
graphs
greedy
math
sortings
trees
+
2700
777
1670E
Hemose on the Tree
bitmasks
constructive algorithms
dfs and similar
trees
+
2200
2k
1667D
Edge Elimination
constructive algorithms
dfs and similar
dp
trees
+
2900
846
1656E
Equal Tree Sums
constructive algorithms
dfs and similar
math
trees
+
2200
3.9k
1646D
Weight the Tree
constructive algorithms
dfs and similar
dp
implementation
trees
+
2000
4.5k
1637F
Towers
constructive algorithms
dfs and similar
dp
greedy
trees
+
2500
2.2k
1627C
Not Assigning
constructive algorithms
dfs and similar
number theory
trees
+
1400
16.4k
1605D
Treelabeling
bitmasks
constructive algorithms
dfs and similar
games
greedy
implementation
trees
+
2100
3.3k
1592C
Bakry and Partitioning
bitmasks
constructive algorithms
dfs and similar
dp
graphs
trees
+
1700
9.3k
1583E
Moment of Bloom
constructive algorithms
dfs and similar
graph matchings
graphs
greedy
trees
+
2200
2.5k
1566E
Buds Re-hanging
constructive algorithms
dfs and similar
dp
greedy
trees
+
2000
4.5k
1559D2
Mocha and Diana (Hard Version)
brute force
constructive algorithms
dfs and similar
dsu
graphs
greedy
trees
two pointers
+
2500
3.2k
1521D
Nastia Plays with a Tree
constructive algorithms
data structures
dfs and similar
dp
dsu
greedy
implementation
trees
+
2500
2.4k
1519E
Off by One
constructive algorithms
dfs and similar
geometry
graphs
sortings
trees
+
2700
943
1515F
Phoenix and Earthquake
constructive algorithms
dfs and similar
dsu
graphs
greedy
trees
+
2600
2.2k
1508E
Tree Calendar
brute force
constructive algorithms
data structures
dfs and similar
sortings
trees
+
3100
453
1494D
Dogeforces
constructive algorithms
data structures
dfs and similar
divide and conquer
dsu
greedy
sortings
trees
+
2300
2.9k
1463E
Plan of Lectures
constructive algorithms
dfs and similar
dsu
graphs
implementation
sortings
trees
+
2400
1.8k
1442E
Black, White and Grey Tree
binary search
constructive algorithms
dfs and similar
dp
greedy
trees
+
3000
805
1406C
Link Cut Centroids
constructive algorithms
dfs and similar
graphs
trees
+
1700
12k
1396E
Distance Matching
constructive algorithms
dfs and similar
trees
+
3200
441
1391E
Pairs of Pairs
constructive algorithms
dfs and similar
graphs
greedy
trees
+
2600
2.1k
1375G
Tree Modification
brute force
constructive algorithms
dfs and similar
graph matchings
graphs
trees
+
2800
2.3k
1364D
Ehab's Last Corollary
constructive algorithms
dfs and similar
graphs
greedy
implementation
trees
+
2100
5.1k
1340D
Nastya and Time Machine
constructive algorithms
dfs and similar
graphs
trees
+
2600
1.1k
1338B
Edge Weight Assignment
bitmasks
constructive algorithms
dfs and similar
greedy
math
trees
+
1800
9.7k
1338D
Nested Rubber Bands
constructive algorithms
dfs and similar
dp
math
trees
+
2700
1.2k
1325C
Ehab and Path-etic MEXs
constructive algorithms
dfs and similar
greedy
trees
+
1500
17.9k
1305D
Kuroni and the Celebration
constructive algorithms
dfs and similar
interactive
trees
+
1900
5.4k
1296F
Berland Beauty
constructive algorithms
dfs and similar
greedy
sortings
trees
+
2100
3.1k
1286B
Numbers on Tree
constructive algorithms
data structures
dfs and similar
graphs
greedy
trees
+
1800
5.7k
1278E
Tests for problem D
constructive algorithms
dfs and similar
divide and conquer
trees
+
2200
2.1k
1214H
Tiles Placement
constructive algorithms
dfs and similar
trees
+
2800
493
1188A2
Add on a Tree: Revolution
constructive algorithms
dfs and similar
implementation
trees
+
2500
1.3k
1182D
Complete Mirror
constructive algorithms
dfs and similar
dp
hashing
implementation
trees
+
2400
1k
1141G
Privatization of Roads in Treeland
binary search
constructive algorithms
dfs and similar
graphs
greedy
trees
+
1900
2.6k
1098A
Sum in the tree
constructive algorithms
dfs and similar
greedy
trees
+
1600
9.7k
1098C
Construct a tree
binary search
constructive algorithms
dfs and similar
graphs
greedy
trees
+
2400
1.2k
1092E
Minimal Diameter Forest
constructive algorithms
dfs and similar
greedy
trees
+
2000
2.2k
1056D
Decorate Apple Tree
constructive algorithms
dfs and similar
dp
graphs
greedy
sortings
trees
+
1600
6.8k
963B
Destruction of a Tree
constructive algorithms
dfs and similar
dp
greedy
trees
+
2000
3k
911F
Tree Destruction
constructive algorithms
dfs and similar
graphs
greedy
trees
+
2400
2.4k
847L
Berland SU Computer Network
constructive algorithms
dfs and similar
graphs
hashing
trees
+
2400
363
843C
Upgrading Tree
constructive algorithms
dfs and similar
graphs
math
trees
+
2600
416
822F
Madness
constructive algorithms
dfs and similar
trees
+
2500
400
796D
Police Stations
constructive algorithms
dfs and similar
dp
graphs
shortest paths
trees
+
2100
7.8k
793E
Problem of offices
constructive algorithms
dfs and similar
dp
trees
+
2900
327
766E
Mahmoud and a xor trip
bitmasks
constructive algorithms
data structures
dfs and similar
dp
math
trees
+
2100
3.6k
761E
Dasha and Puzzle
constructive algorithms
dfs and similar
graphs
greedy
trees
+
2000
2.4k
748F
Santa Clauses and a Soccer Championship
constructive algorithms
dfs and similar
graphs
trees
+
2300
744
698B
Fix a Tree
constructive algorithms
dfs and similar
dsu
graphs
trees
+
1700
6.2k
681D
Gifts by the List
constructive algorithms
dfs and similar
graphs
trees
+
2000
1.9k
576B
Invariance of Tree
constructive algorithms
dfs and similar
greedy
trees
+
2100
1.9k
573C
Bear and Drawing
constructive algorithms
dfs and similar
trees
+
2300
1.1k
570D
Tree Requests
binary search
bitmasks
constructive algorithms
dfs and similar
graphs
trees
+
2200
9.3k
321C
Ciel the Commander
constructive algorithms
dfs and similar
divide and conquer
greedy
trees
+
2100
9.8k
317C
Balance
constructive algorithms
dfs and similar
graphs
trees
+
2500
584
29D
Ant on the Tree
constructive algorithms
dfs and similar
trees
+
2000
3k
showing 1–91 of 91