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data structures
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
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Problems
#
Name
331A2
Oh Sweet Beaverette
data structures
,
sortings
1500
x1384
1398C
Good Subarrays
data structures
,
dp
,
math
1600
x24190
1526C2
Potions (Hard Version)
data structures
,
greedy
1600
x21036
1353D
Constructing the Array
constructive algorithms
,
data structures
,
sortings
1600
x17343
1349A
Orac and LCM
data structures
,
math
,
number theory
1600
x15913
1234D
Distinct Characters Queries
data structures
1600
x14181
1374E1
Reading Books (easy version)
data structures
,
greedy
,
sortings
1600
x13523
343B
Alternating Current
data structures
,
greedy
,
implementation
1600
x13039
1779C
Least Prefix Sum
data structures
,
greedy
1600
x11823
1593E
Gardener and Tree
brute force
,
data structures
,
dfs and similar
,
greedy
,
implementation
,
trees
1600
x11681
1294D
MEX maximizing
data structures
,
greedy
,
implementation
,
math
1600
x11310
1856C
To Become Max
binary search
,
brute force
,
data structures
,
dp
1600
x11060
1843E
Tracking Segments
binary search
,
brute force
,
data structures
,
two pointers
1600
x10975
1748C
Zero-Sum Prefixes
brute force
,
data structures
,
dp
,
greedy
,
implementation
1600
x10447
1857F
Sum and Product
binary search
,
data structures
,
math
1600
x10435
1175B
Catch Overflow!
data structures
,
expression parsing
,
implementation
1600
x10284
1722E
Counting Rectangles
brute force
,
data structures
,
dp
,
implementation
1600
x10067
1849C
Binary String Copying
binary search
,
brute force
,
data structures
,
hashing
,
strings
1600
x9850
1862E
Kolya and Movie Theatre
constructive algorithms
,
data structures
,
greedy
1600
x9590
1196D2
RGB Substring (hard version)
data structures
,
dp
,
implementation
,
two pointers
1600
x9470
1861C
Queries for the Array
data structures
,
dfs and similar
,
implementation
,
strings
,
trees
1600
x9461
1829G
Hits Different
data structures
,
dp
,
implementation
,
math
1600
x9405
1198B
Welfare State
binary search
,
brute force
,
data structures
,
sortings
1600
x9298
1041C
Coffee Break
binary search
,
data structures
,
greedy
,
two pointers
1600
x9258
1140C
Playlist
brute force
,
data structures
,
sortings
1600
x9255
1498C
Planar Reflections
brute force
,
data structures
,
dp
1600
x9186
570C
Replacement
constructive algorithms
,
data structures
,
implementation
1600
x8972
704A
Thor
brute force
,
data structures
,
implementation
1600
x8940
1461D
Divide and Summarize
binary search
,
brute force
,
data structures
,
divide and conquer
,
implementation
,
sortings
1600
x8902
722C
Destroying Array
data structures
,
dsu
1600
x8849
616D
Longest k-Good Segment
binary search
,
data structures
,
two pointers
1600
x8787
1714D
Color with Occurrences
brute force
,
data structures
,
dp
,
greedy
,
strings
1600
x8709
1523C
Compression and Expansion
brute force
,
data structures
,
greedy
,
implementation
,
trees
1600
x8587
1290A
Mind Control
brute force
,
data structures
,
implementation
1600
x8311
1941E
Rudolf and k Bridges
binary search
,
data structures
,
dp
,
two pointers
1600
x8147
1677A
Tokitsukaze and Strange Inequality
brute force
,
data structures
,
dp
1600
x8116
1566D2
Seating Arrangements (hard version)
data structures
,
greedy
,
implementation
,
sortings
,
two pointers
1600
x7698
1878D
Reverse Madness
data structures
,
greedy
1600
x7582
1840E
Character Blocking
data structures
,
hashing
,
implementation
1600
x7542
659E
New Reform
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
1600
x7322
681C
Heap Operations
constructive algorithms
,
data structures
,
greedy
1600
x7288
923B
Producing Snow
binary search
,
data structures
1600
x7177
1163B2
Cat Party (Hard Edition)
data structures
,
implementation
1600
x7093
493C
Vasya and Basketball
binary search
,
brute force
,
data structures
,
implementation
,
sortings
,
two pointers
1600
x6671
962D
Merge Equals
data structures
,
implementation
1600
x6668
283A
Cows and Sequence
constructive algorithms
,
data structures
,
implementation
1600
x6481
777C
Alyona and Spreadsheet
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
two pointers
1600
x6278
1227D1
Optimal Subsequences (Easy Version)
data structures
,
greedy
1600
x6123
518C
Anya and Smartphone
constructive algorithms
,
data structures
,
implementation
1600
x5925
573B
Bear and Blocks
binary search
,
data structures
,
dp
,
math
1600
x5699
383A
Milking cows
data structures
,
greedy
1600
x5205
375B
Maximum Submatrix 2
data structures
,
dp
,
implementation
,
sortings
1600
x4956
847B
Preparing for Merge Sort
binary search
,
data structures
1600
x4650
364A
Matrix
combinatorics
,
data structures
,
implementation
1600
x4598
733D
Kostya the Sculptor
data structures
,
hashing
1600
x4136
858D
Polycarp's phone book
data structures
,
implementation
,
sortings
1600
x3712
1252C
Even Path
data structures
,
implementation
1600
x3624
830B
Cards Sorting
data structures
,
implementation
,
sortings
1600
x2795
253C
Text Editor
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
1600
x2524
523D
Statistics of Recompressing Videos
*special problem
,
data structures
,
implementation
1600
x2243
156B
Suspects
constructive algorithms
,
data structures
,
implementation
1600
x2188
637D
Running with Obstacles
*special problem
,
data structures
,
dp
,
greedy
1600
x1952
466C
Number of Ways
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x34602
339D
Xenia and Bit Operations
data structures
,
trees
1700
x23682
349B
Color the Fence
data structures
,
dp
,
greedy
,
implementation
1700
x13495
1381A2
Prefix Flip (Hard Version)
constructive algorithms
,
data structures
,
implementation
,
strings
,
two pointers
1700
x12755
1474C
Array Destruction
brute force
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
1700
x12206
1343D
Constant Palindrome Sum
brute force
,
data structures
,
greedy
,
two pointers
1700
x12204
1333C
Eugene and an array
binary search
,
data structures
,
implementation
,
two pointers
1700
x12178
1626C
Monsters And Spells
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1700
x10614
1700C
Helping the Nature
constructive algorithms
,
data structures
,
greedy
1700
x10462
1335E1
Three Blocks Palindrome (easy version)
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x10454
1695C
Zero Path
brute force
,
data structures
,
dp
,
graphs
,
greedy
,
shortest paths
1700
x10382
385C
Bear and Prime Numbers
binary search
,
brute force
,
data structures
,
dp
,
implementation
,
math
,
number theory
1700
x9385
1473D
Program
data structures
,
dp
,
implementation
,
strings
1700
x9316
567C
Geometric Progression
binary search
,
data structures
,
dp
1700
x9281
1619E
MEX and Increments
constructive algorithms
,
data structures
,
dp
,
greedy
,
implementation
,
math
,
sortings
1700
x8677
1430D
String Deletion
binary search
,
data structures
,
greedy
,
two pointers
1700
x8667
1598D
Training Session
combinatorics
,
data structures
,
geometry
,
implementation
,
math
1700
x8406
1061C
Multiplicity
data structures
,
dp
,
implementation
,
math
,
number theory
1700
x8361
1715C
Monoblock
combinatorics
,
data structures
,
implementation
,
math
1700
x8338
1157E
Minimum Array
binary search
,
data structures
,
greedy
1700
x8155
1709D
Rorororobot
binary search
,
data structures
,
greedy
,
math
1700
x8078
1497E1
Square-Free Division (easy version)
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
1700
x8036
1702F
Equate Multisets
constructive algorithms
,
data structures
,
greedy
,
math
,
number theory
1700
x7942
1472E
Correct Placement
binary search
,
data structures
,
dp
,
sortings
,
two pointers
1700
x7725
1491C
Pekora and Trampoline
brute force
,
data structures
,
dp
,
greedy
,
implementation
1700
x7718
1278C
Berry Jam
data structures
,
dp
,
greedy
,
implementation
1700
x7605
1779D
Boris and His Amazing Haircut
constructive algorithms
,
data structures
,
dp
,
dsu
,
greedy
,
sortings
1700
x7502
1257D
Yet Another Monster Killing Problem
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
1700
x7205
1185C2
Exam in BerSU (hard version)
brute force
,
data structures
,
greedy
,
math
1700
x7145
1714G
Path Prefixes
binary search
,
data structures
,
dfs and similar
,
trees
1700
x7125
1692H
Gambling
data structures
,
dp
,
greedy
,
math
1700
x7057
1644D
Cross Coloring
data structures
,
implementation
,
math
1700
x6989
1583C
Omkar and Determination
data structures
,
dp
1700
x6806
1731D
Valiant's New Map
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x6719
1833F
Ira and Flamenco
combinatorics
,
constructive algorithms
,
data structures
,
implementation
,
math
,
sortings
,
two pointers
1700
x6698
1822G1
Magic Triples (Easy Version)
brute force
,
data structures
,
math
,
number theory
1700
x6497
1000C
Covered Points Count
data structures
,
implementation
,
sortings
1700
x6433
1608C
Game Master
data structures
,
dfs and similar
,
dp
,
graphs
,
greedy
,
two pointers
1700
x6417
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