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Problems
#
Name
1887C
Minimum Array
binary search
,
brute force
,
constructive algorithms
,
data structures
,
greedy
,
hashing
,
two pointers
2400
x1589
1886F
Diamond Theft
data structures
,
greedy
3300
x159
1886D
Monocarp and the Set
combinatorics
,
data structures
,
math
2100
x3337
1884C
Medium Design
brute force
,
data structures
,
dp
,
greedy
,
sortings
1700
x5491
1883F
You Are So Beautiful
data structures
1400
x8286
1883D
In Love
data structures
,
greedy
1500
x10058
1881G
Anya and the Mysterious String
binary search
,
data structures
2000
x2177
1879F
Last Man Standing
brute force
,
data structures
,
number theory
2800
x472
1878G
wxhtzdy ORO Tree
binary search
,
bitmasks
,
brute force
,
data structures
,
dfs and similar
,
implementation
,
trees
2300
x1099
1878E
Iva & Pav
binary search
,
bitmasks
,
data structures
,
greedy
1400
x11187
1878D
Reverse Madness
data structures
,
greedy
1600
x7620
1876G
Clubstep
binary search
,
brute force
,
data structures
,
greedy
,
trees
3500
x117
1876E
Ball-Stackable
constructive algorithms
,
data structures
,
dp
,
trees
3300
x254
1872E
Data Structures Fan
binary search
,
bitmasks
,
data structures
,
dp
1500
x12107
1870H
Standard Graph Problem
data structures
,
graphs
,
greedy
,
trees
3500
x77
1870G
MEXanization
data structures
3300
x202
1870C
Colorful Table
binary search
,
data structures
,
dp
,
implementation
,
math
,
two pointers
1300
x10770
1868F
LIS?
data structures
,
greedy
,
implementation
3500
x69
1867C
Salyg1n and the MEX Game
constructive algorithms
,
data structures
,
games
,
greedy
,
interactive
1300
x10606
1866K
Keen Tree Calculation
binary search
,
data structures
,
dp
,
geometry
,
graphs
,
implementation
,
trees
2500
x412
1866G
Grouped Carriages
binary search
,
data structures
,
dp
,
flows
,
greedy
2100
x1526
1866F
Freak Joker Process
binary search
,
data structures
,
sortings
3100
x120
1864F
Exotic Queries
data structures
,
implementation
,
sortings
2300
x1316
1864E
Guess Game
bitmasks
,
data structures
,
games
,
math
,
probabilities
,
sortings
,
strings
,
trees
2100
x2469
1864D
Matrix Cascade
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
math
1700
x6368
1862G
The Great Equalizer
binary search
,
data structures
,
math
,
sortings
2000
x2667
1862E
Kolya and Movie Theatre
constructive algorithms
,
data structures
,
greedy
1600
x9663
1862C
Flower City Fence
binary search
,
data structures
,
implementation
,
sortings
1100
x19735
1861C
Queries for the Array
data structures
,
dfs and similar
,
implementation
,
strings
,
trees
1600
x9505
1860F
Evaluate RBS
data structures
,
geometry
,
implementation
,
math
,
sortings
2900
x265
1860E
Fast Travel Text Editor
data structures
,
dfs and similar
,
graphs
,
shortest paths
2400
x1312
1860C
Game on Permutation
data structures
,
dp
,
games
,
greedy
1400
x12490
1859F
Teleportation in Byteland
data structures
,
dfs and similar
,
divide and conquer
,
graphs
,
shortest paths
,
trees
3200
x371
1859D
Andrey and Escape from Capygrad
binary search
,
data structures
,
dp
,
dsu
,
greedy
,
sortings
1800
x6572
1858E2
Rollbacks (Hard Version)
data structures
,
interactive
,
trees
2600
x1008
1858E1
Rollbacks (Easy Version)
brute force
,
data structures
,
dfs and similar
,
trees
2500
x1251
1858D
Trees and Segments
brute force
,
data structures
,
dp
,
greedy
,
two pointers
2200
x2713
1857F
Sum and Product
binary search
,
data structures
,
math
1600
x10482
1856C
To Become Max
binary search
,
brute force
,
data structures
,
dp
1600
x11129
1852F
Panda Meetups
data structures
,
dp
,
flows
3500
x99
1852E
Rivalries
constructive algorithms
,
data structures
,
greedy
3400
x157
1852C
Ina of the Mountain
data structures
,
dp
,
greedy
,
math
2400
x1461
1851G
Vlad and the Mountains
binary search
,
data structures
,
dsu
,
graphs
,
implementation
,
sortings
,
trees
,
two pointers
2000
x2943
1850G
The Morning Star
combinatorics
,
data structures
,
geometry
,
implementation
,
math
,
sortings
1500
x11284
1849F
XOR Partition
binary search
,
bitmasks
,
data structures
,
divide and conquer
,
greedy
,
trees
2700
x657
1849E
Max to the Right of Min
binary search
,
data structures
,
divide and conquer
,
dp
,
dsu
,
two pointers
2300
x1519
1849C
Binary String Copying
binary search
,
brute force
,
data structures
,
hashing
,
strings
1600
x9883
1848B
Vika and the Bridge
binary search
,
data structures
,
greedy
,
implementation
,
math
,
sortings
1200
x13460
1847F
The Boss's Identity
binary search
,
bitmasks
,
data structures
,
dfs and similar
,
greedy
,
math
,
sortings
2500
x857
1847D
Professor Higashikata
data structures
,
dsu
,
greedy
,
implementation
,
strings
1900
x3608
1846C
Rudolf and the Another Competition
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
1200
x18001
1845D
Rating System
binary search
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
math
,
two pointers
1800
x7344
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
x645
1844F2
Min Cost Permutation (Hard Version)
binary search
,
constructive algorithms
,
data structures
,
greedy
,
math
,
sortings
2800
x370
1843F2
Omsk Metro (hard version)
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
math
,
trees
2300
x1480
1843F1
Omsk Metro (simple version)
data structures
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
trees
1800
x4997
1843E
Tracking Segments
binary search
,
brute force
,
data structures
,
two pointers
1600
x11045
1842E
Tenzing and Triangle
data structures
,
dp
,
geometry
,
greedy
,
math
2300
x1544
1841E
Fill the Matrix
data structures
,
greedy
,
math
2200
x1889
1841D
Pairs of Segments
data structures
,
greedy
,
sortings
,
two pointers
2000
x4146
1840E
Character Blocking
data structures
,
hashing
,
implementation
1600
x7572
1839D
Ball Sorting
data structures
,
dp
,
sortings
2100
x2183
1838D
Bracket Walk
data structures
,
greedy
,
strings
2100
x3085
1837F
Editorial for Two
binary search
,
data structures
,
greedy
,
implementation
2400
x2077
1834E
MEX of LCM
binary search
,
data structures
,
implementation
,
math
,
number theory
2300
x2074
1834D
Survey in Class
brute force
,
data structures
,
greedy
,
implementation
,
sortings
1900
x4364
1833F
Ira and Flamenco
combinatorics
,
constructive algorithms
,
data structures
,
implementation
,
math
,
sortings
,
two pointers
1700
x6748
1830F
The Third Grace
data structures
,
dp
3200
x221
1830E
Bully Sort
data structures
,
math
3500
x231
1829G
Hits Different
data structures
,
dp
,
implementation
,
math
1600
x9466
1827F
Copium Permutation
constructive algorithms
,
data structures
,
greedy
3500
x107
1827D
Two Centroids
data structures
,
dfs and similar
,
greedy
,
trees
2800
x706
1827C
Palindrome Partition
binary search
,
brute force
,
data structures
,
dp
,
hashing
,
strings
2600
x1148
1827B2
Range Sorting (Hard Version)
binary search
,
data structures
,
dp
,
greedy
2400
x1775
1826E
Walk the Runway
bitmasks
,
brute force
,
data structures
,
dp
,
graphs
,
implementation
,
sortings
2400
x1507
1824E
LuoTianyi and Cartridge
data structures
,
trees
3500
x124
1824D
LuoTianyi and the Function
data structures
3000
x452
1824C
LuoTianyi and XOR-Tree
data structures
,
dfs and similar
,
dp
,
dsu
,
greedy
,
trees
2500
x1255
1822G2
Magic Triples (Hard Version)
brute force
,
data structures
,
math
,
number theory
2200
x2317
1822G1
Magic Triples (Easy Version)
brute force
,
data structures
,
math
,
number theory
1700
x6527
1819F
Willy-nilly, Crack, Into Release!
data structures
,
dp
3500
x127
1819D
Misha and Apples
brute force
,
data structures
,
dp
,
two pointers
2800
x597
1817A
Almost Increasing Subsequence
binary search
,
data structures
,
greedy
1500
x10365
1814E
Chain Chips
data structures
,
dp
,
matrices
2300
x1254
1814D
Balancing Weapons
binary search
,
brute force
,
data structures
,
math
,
two pointers
2500
x822
1811G2
Vlad and the Nice Paths (hard version)
binary search
,
combinatorics
,
data structures
,
dp
,
math
,
two pointers
2200
x1627
1810F
M-tree
data structures
,
math
,
sortings
,
trees
2800
x541
1810E
Monsters
brute force
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
2100
x2980
1809F
Traveling in Berland
binary search
,
data structures
,
graphs
,
greedy
,
implementation
2500
x710
1808D
Petya, Petya, Petr, and Palindromes
binary search
,
brute force
,
data structures
,
two pointers
2100
x2172
1807G1
Subsequence Addition (Easy Version)
brute force
,
data structures
,
dp
,
greedy
,
implementation
,
sortings
1100
x17903
1807D
Odd Queries
data structures
,
implementation
900
x28911
1806E
Tree Master
brute force
,
data structures
,
dfs and similar
,
trees
2200
x2695
1805E
There Should Be a Lot of Maximums
brute force
,
data structures
,
dfs and similar
,
dp
,
trees
,
two pointers
2300
x1529
1805C
Place for a Selfie
binary search
,
data structures
,
geometry
,
math
1400
x12051
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
1801D
The way home
binary search
,
data structures
,
dp
,
graphs
,
greedy
,
shortest paths
,
sortings
2100
x2055
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combine-tags-by-or
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2-sat
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data structures
dfs and similar
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dp
dsu
expression parsing
fft
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graphs
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