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61 problems · filtered by 3 tags
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Name
✎
Rating
↕
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2231E
Graph Cutting
dfs and similar
dp
math
trees
+
2300
1.1k
2219C
Coloring a Red Black Tree
dfs and similar
dp
greedy
math
probabilities
trees
+
2300
1.4k
2184C
Huge Pile
binary search
dfs and similar
dp
graphs
math
+
1100
23k
2167F
Tree, TREE!!!
dfs and similar
dp
math
trees
+
1600
7.6k
2164F1
Chain Prefix Rank (Easy Version)
combinatorics
dfs and similar
dp
math
trees
+
2600
1.3k
2164F2
Chain Prefix Rank (Hard Version)
binary search
combinatorics
data structures
dfs and similar
dp
graphs
math
trees
+
2900
648
2157G
Isaac's Queries
bitmasks
brute force
constructive algorithms
dfs and similar
divide and conquer
dp
greedy
interactive
math
probabilities
+
2800
672
2145F
Long Journey
dfs and similar
divide and conquer
dp
graphs
greedy
math
matrices
number theory
+
2500
1.1k
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
2114F
Small Operations
binary search
brute force
dfs and similar
dp
math
number theory
sortings
+
2000
5.6k
2112E
Tree Colorings
combinatorics
dfs and similar
dp
graphs
math
number theory
trees
+
2200
3.5k
2106F
Goblin
dfs and similar
dp
dsu
greedy
math
+
1900
4.5k
2104F
Numbers and Strings
binary search
brute force
dfs and similar
dp
implementation
math
+
2600
742
2097B
Baggage Claim
combinatorics
dfs and similar
dp
dsu
graphs
implementation
math
trees
+
2300
2k
2086E
Zebra-like Numbers
bitmasks
brute force
constructive algorithms
dfs and similar
dp
greedy
math
+
2400
1.7k
2063F1
Counting Is Not Fun (Easy Version)
combinatorics
data structures
dfs and similar
dp
dsu
graphs
hashing
implementation
math
trees
+
2400
1.6k
2056E
Nested Segments
combinatorics
dfs and similar
dp
dsu
math
+
2500
1.1k
2040E
Control of Randomness
combinatorics
dfs and similar
dp
graphs
greedy
math
probabilities
trees
+
2100
2.8k
2031E
Penchick and Chloe's Trees
data structures
dfs and similar
dp
greedy
implementation
math
sortings
trees
+
2100
2.8k
2028E
Alice's Adventures in the Rabbit Hole
combinatorics
dfs and similar
dp
games
greedy
math
probabilities
trees
+
2300
2k
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
2003D2
Turtle and a MEX Problem (Hard Version)
dfs and similar
dp
graphs
greedy
implementation
math
+
2100
4.7k
2002F1
Court Blue (Easy Version)
brute force
dfs and similar
dp
math
number theory
+
2600
1k
1975F
Set
bitmasks
brute force
combinatorics
dfs and similar
divide and conquer
dp
math
+
2600
1.1k
1955G
GCD on a grid
brute force
dfs and similar
dp
implementation
math
number theory
+
1900
6.1k
1929E
Sasha and the Happy Tree Cutting
bitmasks
brute force
dfs and similar
dp
graphs
greedy
math
trees
+
2300
2.1k
1914G1
Light Bulbs (Easy Version)
brute force
combinatorics
dfs and similar
dp
dsu
graphs
math
trees
+
2100
2.5k
1905E
One-X
combinatorics
dfs and similar
dp
math
trees
+
2400
1.3k
1863E
Speedrun
brute force
dfs and similar
dp
graphs
greedy
math
sortings
two pointers
+
2100
3.3k
1856E2
PermuTree (hard version)
bitmasks
dfs and similar
dp
fft
greedy
implementation
math
trees
+
2700
1.8k
1843D
Apple Tree
combinatorics
dfs and similar
dp
math
trees
+
1200
22.3k
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
1778F
Maximizing Root
dfs and similar
dp
graphs
math
number theory
trees
+
2600
964
1777D
Score of a Tree
bitmasks
combinatorics
dfs and similar
dp
math
probabilities
trees
+
1900
4.9k
1770E
Koxia and Tree
combinatorics
dfs and similar
dp
dsu
math
probabilities
trees
+
2400
1.6k
1707D
Partial Virtual Trees
combinatorics
dfs and similar
dp
math
trees
+
3000
997
1691F
K-Set Tree
combinatorics
dfs and similar
dp
math
trees
+
2500
1.2k
1617E
Christmas Chocolates
dfs and similar
dp
games
graphs
implementation
math
number theory
shortest paths
trees
+
2700
1.1k
1598E
Staircases
brute force
combinatorics
data structures
dfs and similar
dp
implementation
math
+
2100
2.5k
1593B
Make it Divisible by 25
dfs and similar
dp
greedy
math
+
900
43.1k
1593F
Red-Black Number
dfs and similar
dp
implementation
math
meet-in-the-middle
+
2100
2.7k
1554E
You
dfs and similar
dp
math
number theory
+
2600
1.4k
1552D
Array Differentiation
bitmasks
brute force
constructive algorithms
dfs and similar
dp
graphs
math
+
1800
8k
1498F
Christmas Game
bitmasks
data structures
dfs and similar
dp
games
math
trees
+
2500
1.1k
1430G
Yet Another DAG Problem
bitmasks
dfs and similar
dp
flows
graphs
math
+
2600
949
1401D
Maximum Distributed Tree
dfs and similar
dp
greedy
implementation
math
number theory
sortings
trees
+
1800
10.7k
1392G
Omkar and Pies
bitmasks
dfs and similar
dp
math
shortest paths
+
2900
733
1387A
Graph
*special
binary search
dfs and similar
dp
math
ternary search
+
2100
974
1344C
Quantifier Question
dfs and similar
dp
graphs
math
+
2600
2k
1338D
Nested Rubber Bands
constructive algorithms
dfs and similar
dp
math
trees
+
2700
1.2k
1299D
Around the World
bitmasks
combinatorics
dfs and similar
dp
graphs
math
trees
+
3000
652
1200F
Graph Traveler
brute force
data structures
dfs and similar
dp
graphs
implementation
math
number theory
+
2300
1.2k
1142B
Lynyrd Skynyrd
data structures
dfs and similar
dp
math
trees
+
2000
4k
802J3
Send the Fool Further! (hard)
dfs and similar
dp
math
trees
+
2400
404
766E
Mahmoud and a xor trip
bitmasks
constructive algorithms
data structures
dfs and similar
dp
math
trees
+
2100
3.6k
542D
Superhero's Job
dfs and similar
dp
hashing
math
number theory
+
2600
541
538E
Demiurges Play Again
dfs and similar
dp
math
trees
+
2200
1.7k
486D
Valid Sets
dfs and similar
dp
math
trees
+
2100
4.4k
showing 1–61 of 61