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Name
1967F
Next and Prev
brute force
,
data structures
,
implementation
3200
x35
1965F
Conference
data structures
,
flows
3300
x83
1957F2
Frequency Mismatch (Hard Version)
binary search
,
data structures
,
dfs and similar
,
hashing
,
probabilities
,
trees
2700
x292
1956F
Nene and the Passing Game
constructive algorithms
,
data structures
,
dsu
,
graphs
,
sortings
3000
x267
1942H
Farmer John's Favorite Intern
data structures
,
dp
,
flows
,
trees
3500
x62
1942F
Farmer John's Favorite Function
brute force
,
data structures
,
implementation
,
math
2700
x574
1936D
Bitwise Paradox
binary search
,
bitmasks
,
data structures
,
greedy
,
two pointers
3100
x423
1935F
Andrey's Tree
binary search
,
constructive algorithms
,
data structures
,
dfs and similar
,
dsu
,
greedy
,
implementation
,
trees
2800
x399
1930G
Prefix Max Set Counting
data structures
,
dp
,
trees
3100
x253
1928F
Digital Patterns
combinatorics
,
data structures
,
implementation
,
math
2900
x212
1920F2
Smooth Sailing (Hard Version)
binary search
,
data structures
,
dsu
,
geometry
,
graphs
,
trees
3000
x409
1919F2
Wine Factory (Hard Version)
data structures
,
dp
,
flows
,
greedy
,
matrices
2800
x743
1913F
Palindromic Problem
binary search
,
data structures
,
hashing
,
string suffix structures
,
strings
2800
x290
1909H
Parallel Swaps Sort
constructive algorithms
,
data structures
3500
x61
1904F
Beautiful Tree
data structures
,
dfs and similar
,
graphs
,
implementation
,
trees
2800
x309
1900F
Local Deletions
binary search
,
data structures
,
implementation
2800
x261
1895G
Two Characters, Two Colors
binary search
,
data structures
,
dp
,
flows
,
greedy
3100
x174
1889F
Doremy's Average Tree
data structures
,
dp
,
greedy
,
trees
3500
x68
1887D
Split
binary search
,
data structures
,
divide and conquer
,
dsu
,
math
,
trees
,
two pointers
2700
x821
1886F
Diamond Theft
data structures
,
greedy
3300
x159
1879F
Last Man Standing
brute force
,
data structures
,
number theory
2800
x472
1876G
Clubstep
binary search
,
brute force
,
data structures
,
greedy
,
trees
3500
x117
1876E
Ball-Stackable
constructive algorithms
,
data structures
,
dp
,
trees
3300
x254
1870H
Standard Graph Problem
data structures
,
graphs
,
greedy
,
trees
3500
x77
1870G
MEXanization
data structures
3300
x202
1868F
LIS?
data structures
,
greedy
,
implementation
3500
x69
1866F
Freak Joker Process
binary search
,
data structures
,
sortings
3100
x121
1860F
Evaluate RBS
data structures
,
geometry
,
implementation
,
math
,
sortings
2900
x265
1859F
Teleportation in Byteland
data structures
,
dfs and similar
,
divide and conquer
,
graphs
,
shortest paths
,
trees
3200
x371
1852F
Panda Meetups
data structures
,
dp
,
flows
3500
x99
1852E
Rivalries
constructive algorithms
,
data structures
,
greedy
3400
x157
1849F
XOR Partition
binary search
,
bitmasks
,
data structures
,
divide and conquer
,
greedy
,
trees
2700
x660
1844H
Multiple of Three Cycles
combinatorics
,
data structures
,
dp
,
dsu
,
math
3400
x131
1844G
Tree Weights
bitmasks
,
constructive algorithms
,
data structures
,
dfs and similar
,
implementation
,
math
,
matrices
,
number theory
,
trees
3000
x646
1844F2
Min Cost Permutation (Hard Version)
binary search
,
constructive algorithms
,
data structures
,
greedy
,
math
,
sortings
2800
x370
1830F
The Third Grace
data structures
,
dp
3200
x223
1830E
Bully Sort
data structures
,
math
3500
x231
1827F
Copium Permutation
constructive algorithms
,
data structures
,
greedy
3500
x108
1827D
Two Centroids
data structures
,
dfs and similar
,
greedy
,
trees
2800
x707
1824E
LuoTianyi and Cartridge
data structures
,
trees
3500
x125
1824D
LuoTianyi and the Function
data structures
3000
x453
1819F
Willy-nilly, Crack, Into Release!
data structures
,
dp
3500
x127
1819D
Misha and Apples
brute force
,
data structures
,
dp
,
two pointers
2800
x597
1810F
M-tree
data structures
,
math
,
sortings
,
trees
2800
x543
1804G
Flow Control
data structures
,
dsu
,
implementation
3500
x193
1801G
A task for substrings
data structures
,
string suffix structures
,
strings
3400
x351
1801E
Gasoline prices
data structures
,
divide and conquer
,
dsu
,
hashing
,
trees
3000
x433
1797F
Li Hua and Path
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
trees
3000
x332
1787I
Treasure Hunt
data structures
,
divide and conquer
,
two pointers
3400
x148
1787H
Codeforces Scoreboard
binary search
,
data structures
,
dp
,
geometry
3300
x201
1787G
Colorful Tree Again
brute force
,
data structures
,
trees
3000
x396
1783G
Weighed Tree Radius
data structures
,
divide and conquer
,
implementation
,
trees
2800
x411
1776E
Crossing the Railways
data structures
,
dp
3500
x62
1774G
Segment Covering
brute force
,
combinatorics
,
constructive algorithms
,
data structures
,
dp
,
trees
3200
x377
1774F2
Magician and Pigs (Hard Version)
binary search
,
brute force
,
data structures
,
implementation
2700
x644
1767F
Two Subtrees
data structures
,
trees
3100
x248
1764H
Doremy's Paint 2
data structures
3400
x168
1763F
Edge Queries
data structures
,
dfs and similar
,
dp
,
dsu
,
graphs
,
trees
3000
x419
1758F
Decent Division
constructive algorithms
,
data structures
3000
x155
1750H
BinaryStringForces
constructive algorithms
,
data structures
,
dp
3500
x73
1749F
Distance to the Path
data structures
,
dfs and similar
,
trees
2800
x477
1746G
Olympiad Training
binary search
,
data structures
,
dp
,
flows
,
geometry
,
implementation
,
sortings
3500
x88
1746F
Kazaee
data structures
,
hashing
,
probabilities
2800
x1548
1743G
Antifibonacci Cut
bitmasks
,
combinatorics
,
constructive algorithms
,
data structures
,
dp
,
hashing
,
math
3000
x245
1740I
Arranging Crystal Balls
data structures
,
divide and conquer
,
divide and conquer
,
dp
,
geometry
,
graphs
,
number theory
3500
x105
1740H
MEX Tree Manipulation
data structures
,
trees
3300
x201
1738H
Palindrome Addicts
data structures
,
strings
3300
x228
1737G
Ela Takes Dancing Class
binary search
,
data structures
3500
x108
1735F
Pebbles and Beads
data structures
,
geometry
2900
x218
1732E
Location
data structures
,
dp
,
math
,
number theory
2800
x414
1730F
Almost Sorted
bitmasks
,
data structures
,
dp
2700
x412
1730E
Maximums and Minimums
combinatorics
,
data structures
,
divide and conquer
,
number theory
2700
x615
1726G
A Certain Magical Party
combinatorics
,
data structures
,
greedy
,
sortings
3300
x284
1726F
Late For Work (submissions are not allowed)
data structures
,
greedy
,
schedules
,
shortest paths
2900
x131
1720E
Misha and Paintings
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
2700
x739
1718F
Burenka, an Array and Queries
data structures
,
math
,
number theory
3300
x145
1718D
Permutation for Burenka
data structures
,
graph matchings
,
greedy
,
math
,
trees
3300
x288
1712F
Triameter
binary search
,
data structures
,
dfs and similar
,
trees
3200
x305
1707E
Replace
binary search
,
data structures
3500
x562
1696G
Fishingprince Plays With Array Again
brute force
,
data structures
,
geometry
,
math
3300
x265
1693E
Outermost Maximums
data structures
,
greedy
3400
x372
1693D
Decinc Dividing
brute force
,
data structures
,
divide and conquer
,
dp
,
greedy
2800
x774
1687D
Cute number
binary search
,
brute force
,
data structures
,
dsu
,
implementation
,
math
2900
x557
1685E
The Ultimate LIS Problem
data structures
,
greedy
3500
x142
1682F
MCMF?
data structures
,
flows
,
graphs
,
greedy
,
sortings
,
two pointers
2700
x288
1677E
Tokitsukaze and Beautiful Subsegments
data structures
2900
x505
1672I
PermutationForces
data structures
,
greedy
3000
x137
1672H
Zigu Zagu
constructive algorithms
,
data structures
,
greedy
2700
x915
1656H
Equal LCM Subsets
data structures
,
math
,
number theory
3200
x417
1654G
Snowy Mountain
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
,
trees
2900
x357
1654F
Minimal String Xoration
bitmasks
,
data structures
,
divide and conquer
,
greedy
,
hashing
,
sortings
,
strings
2800
x1055
1651F
Tower Defense
binary search
,
brute force
,
data structures
3000
x363
1648F
Two Avenues
data structures
,
dfs and similar
,
graphs
3500
x103
1648E
Air Reform
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
graphs
,
implementation
,
trees
3200
x384
1648D
Serious Business
data structures
,
divide and conquer
,
dp
,
implementation
,
shortest paths
2800
x806
1638F
Two Posters
brute force
,
data structures
,
greedy
,
two pointers
3200
x194
1637H
Minimize Inversions Number
data structures
,
greedy
,
math
,
sortings
3500
x300
1635F
Closest Pair
data structures
,
greedy
2800
x980
1634F
Fibonacci Additions
brute force
,
data structures
,
hashing
,
implementation
,
math
2700
x1530
1633F
Perfect Matching
data structures
,
divide and conquer
,
interactive
,
trees
2800
x309
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