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Problemset
71 problems · filtered by 3 tags
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Name
✎
Rating
↕
Solved
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2194F2
Again Trees... (hard version)
bitmasks
data structures
dfs and similar
dp
fft
trees
+
3000
223
2189F
Zhora the Vacuum Cleaner
data structures
dfs and similar
dp
greedy
implementation
sortings
trees
+
2800
254
2182G
Short Garland
combinatorics
data structures
dfs and similar
dp
trees
+
2800
383
2176E
Remove at the lowest cost
data structures
dfs and similar
dp
dsu
greedy
implementation
trees
+
2400
1.3k
2164F2
Chain Prefix Rank (Hard Version)
binary search
combinatorics
data structures
dfs and similar
dp
graphs
math
trees
+
2900
648
2131G
Wafu!
bitmasks
brute force
data structures
dfs and similar
dp
math
+
2000
3.9k
2118D2
Red Light, Green Light (Hard version)
binary search
brute force
data structures
dfs and similar
dp
graphs
implementation
math
number theory
+
2200
2.6k
2097E
Clearing the Snowdrift
data structures
dfs and similar
dp
greedy
+
3100
287
2071C
Trapmigiano Reggiano
constructive algorithms
data structures
dfs and similar
dp
greedy
sortings
trees
+
1700
9.9k
2063C
Remove Exactly Two
brute force
data structures
dfs and similar
dp
graphs
greedy
sortings
trees
+
1600
15.1k
2063E
Triangle Tree
data structures
dfs and similar
dp
greedy
trees
+
2300
2.4k
2063F1
Counting Is Not Fun (Easy Version)
combinatorics
data structures
dfs and similar
dp
dsu
graphs
hashing
implementation
math
trees
+
2400
1.6k
2033G
Sakurako and Chefir
data structures
dfs and similar
dp
greedy
trees
+
2200
2k
2031D
Penchick and Desert Rabbit
binary search
data structures
dfs and similar
dp
dsu
greedy
implementation
two pointers
+
1700
10.1k
2031E
Penchick and Chloe's Trees
data structures
dfs and similar
dp
greedy
implementation
math
sortings
trees
+
2100
2.8k
2027C
Add Zeros
brute force
data structures
dfs and similar
dp
graphs
greedy
+
1500
14.1k
2026F
Bermart Ice Cream
data structures
dfs and similar
divide and conquer
dp
implementation
trees
+
2700
413
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
1985H2
Maximize the Largest Component (Hard Version)
data structures
dfs and similar
dp
dsu
implementation
+
2200
2k
1976F
Remove Bridges
data structures
dfs and similar
dp
greedy
sortings
trees
+
2800
893
1946F
Nobody is needed
2-sat
data structures
dfs and similar
dp
+
2500
1.3k
1942D
Learning to Paint
binary search
data structures
dfs and similar
dp
greedy
implementation
sortings
+
2100
3.4k
1923E
Count Paths
data structures
dfs and similar
dp
dsu
graphs
trees
+
2000
5.3k
1914G2
Light Bulbs (Hard Version)
combinatorics
data structures
dfs and similar
dp
graphs
hashing
+
2300
1.9k
1895E
Infinite Card Game
binary search
brute force
data structures
dfs and similar
dp
dsu
games
graphs
greedy
sortings
two pointers
+
2300
1.9k
1843F1
Omsk Metro (simple version)
data structures
dfs and similar
dp
graphs
greedy
math
trees
+
1800
6.5k
1843F2
Omsk Metro (hard version)
data structures
dfs and similar
divide and conquer
dp
math
trees
+
2300
2.2k
1824C
LuoTianyi and XOR-Tree
data structures
dfs and similar
dp
dsu
greedy
trees
+
2500
1.7k
1805E
There Should Be a Lot of Maximums
brute force
data structures
dfs and similar
dp
trees
two pointers
+
2300
2k
1797D
Li Hua and Tree
brute force
data structures
dfs and similar
dp
implementation
trees
+
1900
4.7k
1788E
Sum Over Zero
data structures
dfs and similar
dp
+
2200
3.4k
1771D
Hossam and (sub-)palindromic tree
brute force
data structures
dfs and similar
dp
strings
trees
+
2100
3.3k
1763F
Edge Queries
data structures
dfs and similar
dp
dsu
graphs
trees
+
3000
750
1740E
Hanging Hearts
constructive algorithms
data structures
dfs and similar
dp
greedy
trees
+
1800
5.1k
1716E
Swap and Maximum Block
bitmasks
data structures
dfs and similar
divide and conquer
dp
+
2500
1.4k
1681F
Unique Occurrences
data structures
dfs and similar
divide and conquer
dp
dsu
trees
+
2300
2.4k
1650G
Counting Shortcuts
data structures
dfs and similar
dp
graphs
shortest paths
+
2100
3k
1625E1
Cats on the Upgrade (easy version)
brute force
data structures
dfs and similar
divide and conquer
dp
graphs
trees
+
2500
1.2k
1608C
Game Master
data structures
dfs and similar
dp
graphs
greedy
two pointers
+
1700
7.4k
1601B
Frog Traveler
data structures
dfs and similar
dp
graphs
shortest paths
two pointers
+
1900
5.6k
1598E
Staircases
brute force
combinatorics
data structures
dfs and similar
dp
implementation
math
+
2100
2.5k
1535D
Playoff Tournament
data structures
dfs and similar
dp
implementation
trees
+
1800
8.6k
1521D
Nastia Plays with a Tree
constructive algorithms
data structures
dfs and similar
dp
dsu
greedy
implementation
trees
+
2500
2.4k
1498F
Christmas Game
bitmasks
data structures
dfs and similar
dp
games
math
trees
+
2500
1.1k
1486F
Pairs of Paths
combinatorics
data structures
dfs and similar
dp
trees
+
2600
875
1467E
Distinctive Roots in a Tree
data structures
dfs and similar
dp
trees
+
2500
1.8k
1379C
Choosing flowers
binary search
brute force
data structures
dfs and similar
dp
greedy
sortings
two pointers
+
2000
6.2k
1320E
Treeland and Viruses
data structures
dfs and similar
dp
shortest paths
trees
+
3000
1.1k
1312G
Autocompletion
data structures
dfs and similar
dp
+
2600
1.2k
1263F
Economic Difficulties
data structures
dfs and similar
dp
flows
graphs
trees
+
2400
982
1200F
Graph Traveler
brute force
data structures
dfs and similar
dp
graphs
implementation
math
number theory
+
2300
1.2k
1175E
Minimal Segment Cover
data structures
dfs and similar
divide and conquer
dp
greedy
implementation
trees
+
2200
4.7k
1142B
Lynyrd Skynyrd
data structures
dfs and similar
dp
math
trees
+
2000
4k
1111E
Tree
data structures
dfs and similar
dp
graphs
trees
+
2500
1.2k
1101D
GCD Counting
data structures
dfs and similar
dp
number theory
trees
+
2000
5.5k
1099F
Cookies
binary search
data structures
dfs and similar
dp
games
trees
+
2400
1.1k
840B
Leha and another game about graph
constructive algorithms
data structures
dfs and similar
dp
graphs
+
2100
2.9k
766D
Mahmoud and a Dictionary
data structures
dfs and similar
dp
dsu
graphs
+
2000
4k
766E
Mahmoud and a xor trip
bitmasks
constructive algorithms
data structures
dfs and similar
dp
math
trees
+
2100
3.6k
750D
New Year and Fireworks
brute force
data structures
dfs and similar
dp
implementation
+
1900
3.2k
708C
Centroids
data structures
dfs and similar
dp
graphs
greedy
trees
+
2300
4.5k
685B
Kay and Snowflake
data structures
dfs and similar
dp
trees
+
1900
5.6k
629E
Famil Door and Roads
combinatorics
data structures
dfs and similar
dp
probabilities
trees
+
2300
1.2k
519E
A and B and Lecture Rooms
binary search
data structures
dfs and similar
dp
trees
+
2100
8.9k
494D
Birthday
data structures
dfs and similar
dp
trees
+
2700
712
490F
Treeland Tour
data structures
dfs and similar
dp
trees
+
2200
2k
292D
Connected Components
data structures
dfs and similar
dp
dsu
+
1900
2.8k
246E
Blood Cousins Return
binary search
data structures
dfs and similar
dp
sortings
+
2400
4.8k
231E
Cactus
data structures
dfs and similar
dp
graphs
trees
+
2100
2.4k
163E
e-Government
data structures
dfs and similar
dp
strings
trees
+
2800
2.3k
showing 1–71 of 71