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Name
1646D
Weight the Tree
constructive algorithms
,
dfs and similar
,
dp
,
implementation
,
trees
2000
x3551
1637F
Towers
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
2500
x1695
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
x1459
1632E2
Distance Tree (hard version)
binary search
,
dfs and similar
,
shortest paths
,
trees
2700
x929
1632E1
Distance Tree (easy version)
binary search
,
data structures
,
dfs and similar
,
graphs
,
shortest paths
,
trees
2400
x1111
1628E
Groceries in Meteor Town
binary search
,
data structures
,
dsu
,
trees
3100
x830
1627C
Not Assigning
constructive algorithms
,
dfs and similar
,
number theory
,
trees
1400
x14072
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
x580
1625E1
Cats on the Upgrade (easy version)
brute force
,
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
graphs
,
trees
2500
x977
1625D
Binary Spiders
bitmasks
,
data structures
,
implementation
,
math
,
sortings
,
trees
2300
x1971
1623E
Middle Duplication
data structures
,
dfs and similar
,
greedy
,
strings
,
trees
2500
x1078
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
x835
1615E
Purple Crayon
data structures
,
dfs and similar
,
games
,
graphs
,
greedy
,
math
,
sortings
,
trees
2400
x1406
1615D
X(or)-mas Tree
bitmasks
,
dfs and similar
,
dsu
,
graphs
,
trees
2200
x1843
1611E2
Escape The Maze (hard version)
dfs and similar
,
dp
,
greedy
,
shortest paths
,
trees
1900
x3661
1611E1
Escape The Maze (easy version)
dfs and similar
,
greedy
,
shortest paths
,
trees
,
two pointers
1700
x6965
1611D
Weights Assignment For Tree Edges
constructive algorithms
,
trees
1500
x9546
1610I
Mashtali vs AtCoder
games
,
trees
3100
x259
1610H
Squid Game
data structures
,
dfs and similar
,
greedy
,
trees
3100
x422
1609D
Social Network
dsu
,
graphs
,
greedy
,
implementation
,
trees
1600
x6996
1608G
Alphabetic Tree
binary search
,
data structures
,
dfs and similar
,
hashing
,
string suffix structures
,
strings
,
trees
3500
x150
1606F
Tree Queries
brute force
,
dp
,
trees
2800
x518
1605D
Treelabeling
bitmasks
,
constructive algorithms
,
dfs and similar
,
games
,
greedy
,
implementation
,
trees
2100
x2842
1594E2
Rubik's Cube Coloring (hard version)
brute force
,
dp
,
implementation
,
math
,
trees
2300
x1448
1593E
Gardener and Tree
brute force
,
data structures
,
dfs and similar
,
greedy
,
implementation
,
trees
1600
x11731
1592D
Hemose in ICPC ?
binary search
,
dfs and similar
,
implementation
,
interactive
,
math
,
number theory
,
trees
2300
x2164
1592C
Bakry and Partitioning
bitmasks
,
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
trees
1700
x7631
1585G
Poachers
dp
,
games
,
graphs
,
trees
2500
x171
1585E
Frequency Queries
data structures
,
dfs and similar
,
trees
2400
x1018
1583H
Omkar and Tours
data structures
,
divide and conquer
,
sortings
,
trees
3300
x314
1583E
Moment of Bloom
constructive algorithms
,
dfs and similar
,
graph matchings
,
graphs
,
greedy
,
trees
2200
x2163
1583B
Omkar and Heavenly Tree
constructive algorithms
,
trees
1200
x11952
1580D
Subsequence
brute force
,
divide and conquer
,
dp
,
greedy
,
trees
2900
x763
1580B
Mathematics Curriculum
brute force
,
combinatorics
,
dp
,
trees
2600
x977
1575I
Illusions of the Desert
data structures
,
trees
2300
x843
1575E
Eye-Pleasing City Park Tour
data structures
,
trees
2600
x303
1566E
Buds Re-hanging
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
2000
x4021
1559D2
Mocha and Diana (Hard Version)
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
trees
,
two pointers
2500
x2537
1559D1
Mocha and Diana (Easy Version)
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
trees
1400
x13262
1555F
Good Graph
data structures
,
dsu
,
graphs
,
trees
2700
x830
1555E
Boring Segments
data structures
,
sortings
,
trees
,
two pointers
2100
x3867
1553H
XOR and Distance
bitmasks
,
divide and conquer
,
trees
2900
x674
1551F
Equidistant Vertices
brute force
,
combinatorics
,
dfs and similar
,
dp
,
trees
2200
x1751
1547G
How Many Paths?
dfs and similar
,
dp
,
graphs
,
trees
2100
x2869
1540B
Tree Array
brute force
,
combinatorics
,
dp
,
graphs
,
math
,
probabilities
,
trees
2300
x2494
1535E
Gold Transfer
binary search
,
data structures
,
dp
,
greedy
,
interactive
,
trees
2200
x2642
1535D
Playoff Tournament
data structures
,
dfs and similar
,
dp
,
implementation
,
trees
1800
x7498
1534H
Lost Nodes
constructive algorithms
,
dp
,
graphs
,
interactive
,
sortings
,
trees
3500
x143
1534D
Lost Tree
constructive algorithms
,
interactive
,
trees
1800
x5781
1528E
Mashtali and Hagh Trees
combinatorics
,
dp
,
trees
2900
x505
1528C
Trees of Tranquillity
data structures
,
dfs and similar
,
greedy
,
trees
2300
x2508
1528A
Parsa's Humongous Tree
dfs and similar
,
divide and conquer
,
dp
,
greedy
,
trees
1600
x13932
1527D
MEX Tree
combinatorics
,
dfs and similar
,
implementation
,
math
,
trees
2400
x1837
1523C
Compression and Expansion
brute force
,
data structures
,
greedy
,
implementation
,
trees
1600
x8599
1521D
Nastia Plays with a Tree
constructive algorithms
,
data structures
,
dfs and similar
,
dp
,
dsu
,
greedy
,
implementation
,
trees
2500
x1809
1519E
Off by One
constructive algorithms
,
dfs and similar
,
geometry
,
graphs
,
sortings
,
trees
2700
x807
1517F
Reunion
combinatorics
,
dp
,
trees
3200
x443
1515F
Phoenix and Earthquake
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
trees
2600
x1687
1511C
Yet Another Card Deck
brute force
,
data structures
,
implementation
,
trees
1100
x22256
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
x1425
1499F
Diameter Cuts
combinatorics
,
dfs and similar
,
dp
,
trees
2400
x1251
1498F
Christmas Game
bitmasks
,
data structures
,
dfs and similar
,
dp
,
games
,
math
,
trees
2500
x854
1495F
Squares
constructive algorithms
,
data structures
,
dp
,
graphs
,
trees
3300
x281
1495D
BFS Trees
combinatorics
,
dfs and similar
,
graphs
,
math
,
shortest paths
,
trees
2600
x1192
1494D
Dogeforces
constructive algorithms
,
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
greedy
,
sortings
,
trees
2300
x2501
1491H
Yuezheng Ling and Dynamic Tree
data structures
,
trees
3400
x764
1491E
Fib-tree
brute force
,
dfs and similar
,
divide and conquer
,
number theory
,
trees
2400
x2044
1486F
Pairs of Paths
combinatorics
,
data structures
,
dfs and similar
,
dp
,
trees
2600
x623
1485E
Move and Swap
dfs and similar
,
dp
,
greedy
,
trees
2500
x1215
1482H
Exam
data structures
,
string suffix structures
,
trees
3400
x434
1481F
AB Tree
dp
,
greedy
,
trees
3100
x462
1479D
Odd Mineral Resource
binary search
,
bitmasks
,
brute force
,
data structures
,
probabilities
,
trees
2900
x968
1467E
Distinctive Roots in a Tree
data structures
,
dfs and similar
,
dp
,
trees
2500
x1335
1466D
13th Labour of Heracles
data structures
,
greedy
,
sortings
,
trees
1500
x10836
1464F
My Beautiful Madness
data structures
,
trees
3500
x273
1463E
Plan of Lectures
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
implementation
,
sortings
,
trees
2400
x1456
1458F
Range Diameter Sum
data structures
,
trees
3500
x258
1454E
Number of Simple Paths
combinatorics
,
dfs and similar
,
graphs
,
trees
2000
x5520
1453E
Dog Snacks
binary search
,
dfs and similar
,
dp
,
greedy
,
trees
2300
x1972
1452G
Game On Tree
data structures
,
dfs and similar
,
greedy
,
trees
2700
x456
1450G
Communism
bitmasks
,
dp
,
trees
3500
x233
1446C
Xor Tree
binary search
,
bitmasks
,
data structures
,
divide and conquer
,
dp
,
trees
2100
x3398
1444E
Finding the Vertex
brute force
,
dfs and similar
,
dp
,
interactive
,
trees
3500
x132
1442E
Black, White and Grey Tree
binary search
,
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
3000
x554
1439E
Cheat and Win
bitmasks
,
data structures
,
games
,
trees
3500
x214
1438F
Olha and Igor
interactive
,
probabilities
,
trees
3000
x611
1437G
Death DBMS
data structures
,
string suffix structures
,
strings
,
trees
2600
x953
1437D
Minimal Height Tree
graphs
,
greedy
,
shortest paths
,
trees
1600
x12329
1436D
Bandit in a City
binary search
,
dfs and similar
,
graphs
,
greedy
,
trees
1900
x5862
1427F
Boring Card Game
data structures
,
greedy
,
trees
3200
x308
1423C
Dušan's Railway
divide and conquer
,
graphs
,
trees
3500
x130
1416D
Graph and Queries
data structures
,
dsu
,
graphs
,
implementation
,
trees
2600
x1875
1416C
XOR Inverse
bitmasks
,
data structures
,
divide and conquer
,
dp
,
greedy
,
math
,
sortings
,
strings
,
trees
2000
x4189
1413F
Roads and Ramen
data structures
,
trees
2800
x706
1408G
Clusterization Counting
combinatorics
,
dp
,
dsu
,
fft
,
graphs
,
trees
2700
x927
1408E
Avoid Rainbow Cycles
data structures
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2400
x1878
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Codeforces Round 946 (Div. 3)
23:38:33
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expression parsing
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