Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Contest is running
2023 Post World Finals Online ICPC Challenge powered by Huawei
12 days
Register now »
Contest is running
Kotlin Heroes: Practice 10
5 days
Register now »
→ Filter Problems
Difficulty:
—
trees
combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
meet-in-the-middle
number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
Add tag
Main
acmsguru
|
Problems
Submit
Status
Standings
Custom test
Problems
#
Name
1646D
Weight the Tree
constructive algorithms
,
dfs and similar
,
dp
,
implementation
,
trees
2000
x3541
1637F
Towers
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
2500
x1692
1633F
Perfect Matching
data structures
,
divide and conquer
,
interactive
,
trees
2800
x308
1633E
Spanning Tree Queries
binary search
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
math
,
sortings
,
trees
2400
x1457
1632E2
Distance Tree (hard version)
binary search
,
dfs and similar
,
shortest paths
,
trees
2700
x927
1632E1
Distance Tree (easy version)
binary search
,
data structures
,
dfs and similar
,
graphs
,
shortest paths
,
trees
2400
x1109
1628E
Groceries in Meteor Town
binary search
,
data structures
,
dsu
,
trees
3100
x828
1627C
Not Assigning
constructive algorithms
,
dfs and similar
,
number theory
,
trees
1400
x14035
1626E
Black and White Tree
dfs and similar
,
greedy
,
trees
2400
x1520
1625E2
Cats on the Upgrade (hard version)
binary search
,
data structures
,
dfs and similar
,
graphs
,
trees
2800
x578
1625E1
Cats on the Upgrade (easy version)
brute force
,
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
graphs
,
trees
2500
x975
1625D
Binary Spiders
bitmasks
,
data structures
,
implementation
,
math
,
sortings
,
trees
2300
x1967
1623E
Middle Duplication
data structures
,
dfs and similar
,
greedy
,
strings
,
trees
2500
x1076
1621H
Trains and Airplanes
dfs and similar
,
graphs
,
shortest paths
,
trees
3500
x162
1617E
Christmas Chocolates
dfs and similar
,
dp
,
games
,
graphs
,
implementation
,
math
,
number theory
,
shortest paths
,
trees
2700
x832
1615E
Purple Crayon
data structures
,
dfs and similar
,
games
,
graphs
,
greedy
,
math
,
sortings
,
trees
2400
x1404
1615D
X(or)-mas Tree
bitmasks
,
dfs and similar
,
dsu
,
graphs
,
trees
2200
x1839
1611E2
Escape The Maze (hard version)
dfs and similar
,
dp
,
greedy
,
shortest paths
,
trees
1900
x3642
1611E1
Escape The Maze (easy version)
dfs and similar
,
greedy
,
shortest paths
,
trees
,
two pointers
1700
x6943
1611D
Weights Assignment For Tree Edges
constructive algorithms
,
trees
1500
x9517
1610I
Mashtali vs AtCoder
games
,
trees
3100
x256
1610H
Squid Game
data structures
,
dfs and similar
,
greedy
,
trees
3100
x415
1609D
Social Network
dsu
,
graphs
,
greedy
,
implementation
,
trees
1600
x6911
1608G
Alphabetic Tree
binary search
,
data structures
,
dfs and similar
,
hashing
,
string suffix structures
,
strings
,
trees
3500
x149
1606F
Tree Queries
brute force
,
dp
,
trees
2800
x517
1605D
Treelabeling
bitmasks
,
constructive algorithms
,
dfs and similar
,
games
,
greedy
,
implementation
,
trees
2100
x2838
1594E2
Rubik's Cube Coloring (hard version)
brute force
,
dp
,
implementation
,
math
,
trees
2300
x1447
1593E
Gardener and Tree
brute force
,
data structures
,
dfs and similar
,
greedy
,
implementation
,
trees
1600
x11660
1592D
Hemose in ICPC ?
binary search
,
dfs and similar
,
implementation
,
interactive
,
math
,
number theory
,
trees
2300
x2157
1592C
Bakry and Partitioning
bitmasks
,
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
trees
1700
x7607
1585G
Poachers
dp
,
games
,
graphs
,
trees
2500
x170
1585E
Frequency Queries
data structures
,
dfs and similar
,
trees
2400
x1018
1583H
Omkar and Tours
data structures
,
divide and conquer
,
sortings
,
trees
3300
x313
1583E
Moment of Bloom
constructive algorithms
,
dfs and similar
,
graph matchings
,
graphs
,
greedy
,
trees
2200
x2160
1583B
Omkar and Heavenly Tree
constructive algorithms
,
trees
1200
x11935
1580D
Subsequence
brute force
,
divide and conquer
,
dp
,
greedy
,
trees
2900
x758
1580B
Mathematics Curriculum
brute force
,
combinatorics
,
dp
,
trees
2600
x968
1575I
Illusions of the Desert
data structures
,
trees
2300
x840
1575E
Eye-Pleasing City Park Tour
data structures
,
trees
2600
x303
1566E
Buds Re-hanging
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
2000
x4015
1559D2
Mocha and Diana (Hard Version)
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
trees
,
two pointers
2500
x2532
1559D1
Mocha and Diana (Easy Version)
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
trees
1400
x13216
1555F
Good Graph
data structures
,
dsu
,
graphs
,
trees
2700
x829
1555E
Boring Segments
data structures
,
sortings
,
trees
,
two pointers
2100
x3863
1553H
XOR and Distance
bitmasks
,
divide and conquer
,
trees
2900
x673
1551F
Equidistant Vertices
brute force
,
combinatorics
,
dfs and similar
,
dp
,
trees
2200
x1746
1547G
How Many Paths?
dfs and similar
,
dp
,
graphs
,
trees
2100
x2856
1540B
Tree Array
brute force
,
combinatorics
,
dp
,
graphs
,
math
,
probabilities
,
trees
2300
x2488
1535E
Gold Transfer
binary search
,
data structures
,
dp
,
greedy
,
interactive
,
trees
2200
x2633
1535D
Playoff Tournament
data structures
,
dfs and similar
,
dp
,
implementation
,
trees
1800
x7484
1534H
Lost Nodes
constructive algorithms
,
dp
,
graphs
,
interactive
,
sortings
,
trees
3500
x143
1534D
Lost Tree
constructive algorithms
,
interactive
,
trees
1800
x5763
1528E
Mashtali and Hagh Trees
combinatorics
,
dp
,
trees
2900
x503
1528C
Trees of Tranquillity
data structures
,
dfs and similar
,
greedy
,
trees
2300
x2499
1528A
Parsa's Humongous Tree
dfs and similar
,
divide and conquer
,
dp
,
greedy
,
trees
1600
x13864
1527D
MEX Tree
combinatorics
,
dfs and similar
,
implementation
,
math
,
trees
2400
x1830
1523C
Compression and Expansion
brute force
,
data structures
,
greedy
,
implementation
,
trees
1600
x8584
1521D
Nastia Plays with a Tree
constructive algorithms
,
data structures
,
dfs and similar
,
dp
,
dsu
,
greedy
,
implementation
,
trees
2500
x1805
1519E
Off by One
constructive algorithms
,
dfs and similar
,
geometry
,
graphs
,
sortings
,
trees
2700
x804
1517F
Reunion
combinatorics
,
dp
,
trees
3200
x438
1515F
Phoenix and Earthquake
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
trees
2600
x1685
1511C
Yet Another Card Deck
brute force
,
data structures
,
implementation
,
trees
1100
x22152
1508E
Tree Calendar
brute force
,
constructive algorithms
,
data structures
,
dfs and similar
,
sortings
,
trees
3100
x327
1508C
Complete the MST
bitmasks
,
brute force
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
trees
2500
x1421
1499F
Diameter Cuts
combinatorics
,
dfs and similar
,
dp
,
trees
2400
x1244
1498F
Christmas Game
bitmasks
,
data structures
,
dfs and similar
,
dp
,
games
,
math
,
trees
2500
x849
1495F
Squares
constructive algorithms
,
data structures
,
dp
,
graphs
,
trees
3300
x281
1495D
BFS Trees
combinatorics
,
dfs and similar
,
graphs
,
math
,
shortest paths
,
trees
2600
x1191
1494D
Dogeforces
constructive algorithms
,
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
greedy
,
sortings
,
trees
2300
x2493
1491H
Yuezheng Ling and Dynamic Tree
data structures
,
trees
3400
x762
1491E
Fib-tree
brute force
,
dfs and similar
,
divide and conquer
,
number theory
,
trees
2400
x2042
1486F
Pairs of Paths
combinatorics
,
data structures
,
dfs and similar
,
dp
,
trees
2600
x621
1485E
Move and Swap
dfs and similar
,
dp
,
greedy
,
trees
2500
x1213
1482H
Exam
data structures
,
string suffix structures
,
trees
3400
x432
1481F
AB Tree
dp
,
greedy
,
trees
3100
x451
1479D
Odd Mineral Resource
binary search
,
bitmasks
,
brute force
,
data structures
,
probabilities
,
trees
2900
x963
1467E
Distinctive Roots in a Tree
data structures
,
dfs and similar
,
dp
,
trees
2500
x1332
1466D
13th Labour of Heracles
data structures
,
greedy
,
sortings
,
trees
1500
x10793
1464F
My Beautiful Madness
data structures
,
trees
3500
x273
1463E
Plan of Lectures
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
implementation
,
sortings
,
trees
2400
x1450
1458F
Range Diameter Sum
data structures
,
trees
3500
x258
1454E
Number of Simple Paths
combinatorics
,
dfs and similar
,
graphs
,
trees
2000
x5509
1453E
Dog Snacks
binary search
,
dfs and similar
,
dp
,
greedy
,
trees
2300
x1968
1452G
Game On Tree
data structures
,
dfs and similar
,
greedy
,
trees
2700
x453
1450G
Communism
bitmasks
,
dp
,
trees
3500
x233
1446C
Xor Tree
binary search
,
bitmasks
,
data structures
,
divide and conquer
,
dp
,
trees
2100
x3390
1444E
Finding the Vertex
brute force
,
dfs and similar
,
dp
,
interactive
,
trees
3500
x130
1442E
Black, White and Grey Tree
binary search
,
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
3000
x552
1439E
Cheat and Win
bitmasks
,
data structures
,
games
,
trees
3500
x214
1438F
Olha and Igor
interactive
,
probabilities
,
trees
3000
x610
1437G
Death DBMS
data structures
,
string suffix structures
,
strings
,
trees
2600
x951
1437D
Minimal Height Tree
graphs
,
greedy
,
shortest paths
,
trees
1600
x12300
1436D
Bandit in a City
binary search
,
dfs and similar
,
graphs
,
greedy
,
trees
1900
x5845
1427F
Boring Card Game
data structures
,
greedy
,
trees
3200
x307
1423C
Dušan's Railway
divide and conquer
,
graphs
,
trees
3500
x130
1416D
Graph and Queries
data structures
,
dsu
,
graphs
,
implementation
,
trees
2600
x1865
1416C
XOR Inverse
bitmasks
,
data structures
,
divide and conquer
,
dp
,
greedy
,
math
,
sortings
,
strings
,
trees
2000
x4178
1413F
Roads and Ramen
data structures
,
trees
2800
x705
1408G
Clusterization Counting
combinatorics
,
dp
,
dsu
,
fft
,
graphs
,
trees
2700
x926
1408E
Avoid Rainbow Cycles
data structures
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2400
x1875
←
1
2
3
4
5
...
7
8
→
User lists
Name