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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
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strings
ternary search
trees
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Problems
#
Name
1276C
Beautiful Rectangle
brute force
,
combinatorics
,
constructive algorithms
,
data structures
,
greedy
,
math
2300
x1465
1271D
Portals
data structures
,
dp
,
greedy
,
implementation
,
sortings
2100
x2750
1270H
Number of Components
data structures
3300
x581
1268C
K Integers
binary search
,
data structures
2300
x1664
1266E
Spaceship Solitaire
data structures
,
greedy
,
implementation
2100
x2069
1266D
Decreasing Debts
constructive algorithms
,
data structures
,
graphs
,
greedy
,
implementation
,
math
,
two pointers
2000
x3409
1265E
Beautiful Mirrors
data structures
,
dp
,
math
,
probabilities
2100
x3319
1265B
Beautiful Numbers
data structures
,
implementation
,
math
,
two pointers
1300
x12294
1264C
Beautiful Mirrors with queries
data structures
,
probabilities
2400
x1121
1263F
Economic Difficulties
data structures
,
dfs and similar
,
dp
,
flows
,
graphs
,
trees
2400
x838
1263E
Editor
data structures
,
implementation
2100
x2594
1260F
Colored Tree
data structures
,
trees
2700
x481
1257E
The Contest
data structures
,
dp
,
greedy
2000
x4118
1257D
Yet Another Monster Killing Problem
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
1700
x7203
1254D
Tree Queries
data structures
,
probabilities
,
trees
2700
x1142
1253E
Antenna Coverage
data structures
,
dp
,
greedy
,
sortings
2200
x2619
1252K
Addition Robot
data structures
,
math
,
matrices
2100
x1783
1252G
Performance Review
data structures
2100
x1361
1252D
Find String in a Grid
data structures
,
dp
,
strings
,
trees
3000
x324
1252C
Even Path
data structures
,
implementation
1600
x3623
1251E2
Voting (Hard Version)
binary search
,
data structures
,
greedy
2400
x2377
1251E1
Voting (Easy Version)
data structures
,
dp
,
greedy
2300
x2100
1250C
Trip to Saint Petersburg
data structures
2100
x1286
1249D2
Too Many Segments (hard version)
data structures
,
greedy
,
sortings
1800
x4877
1239C
Queue in the Train
data structures
,
greedy
,
implementation
2300
x1304
1238G
Adilbek and the Watering System
data structures
,
greedy
,
sortings
2700
x391
1237G
Balanced Distribution
data structures
,
dp
,
greedy
3500
x119
1237D
Balanced Playlist
binary search
,
data structures
,
implementation
2000
x3790
1237B
Balanced Tunnel
data structures
,
sortings
,
two pointers
1300
x14706
1236E
Alice and the Unfair Game
binary search
,
data structures
,
dp
,
dsu
2500
x635
1236D
Alice and the Doll
brute force
,
data structures
,
greedy
,
implementation
2300
x1645
1234D
Distinct Characters Queries
data structures
1600
x14172
1234B2
Social Network (hard version)
data structures
,
implementation
1300
x16454
1227D2
Optimal Subsequences (Hard Version)
data structures
,
greedy
1800
x4228
1227D1
Optimal Subsequences (Easy Version)
data structures
,
greedy
1600
x6123
1223F
Stack Exterminable Arrays
data structures
,
divide and conquer
,
dp
,
hashing
2600
x1947
1221F
Choose a Square
binary search
,
data structures
,
sortings
2400
x975
1220F
Gardener Alex
binary search
,
data structures
2700
x661
1218F
Workout plan
data structures
,
greedy
1500
x2883
1218B
Guarding warehouses
data structures
,
geometry
3000
x68
1217F
Forced Online Queries Problem
data structures
,
divide and conquer
,
dsu
,
graphs
,
trees
2600
x541
1217E
Sum Queries?
data structures
,
greedy
,
implementation
,
math
2300
x1640
1216F
Wi-Fi
data structures
,
dp
,
greedy
2100
x2331
1214G
Feeling Good
bitmasks
,
data structures
3200
x280
1214C
Bad Sequence
data structures
,
greedy
1200
x12828
1213F
Unstable String Sort
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
strings
2100
x2334
1213B
Bad Prices
data structures
,
implementation
1100
x25625
1209H
Moving Walkways
data structures
,
greedy
,
math
3300
x136
1209G2
Into Blocks (hard version)
data structures
3200
x377
1209G1
Into Blocks (easy version)
data structures
,
dsu
,
greedy
,
implementation
,
two pointers
2000
x2866
1209F
Koala and Notebook
data structures
,
dfs and similar
,
graphs
,
shortest paths
,
strings
,
trees
2600
x1071
1208H
Red Blue Tree
data structures
,
implementation
,
trees
3500
x141
1208E
Let Them Slide
data structures
,
implementation
2200
x1959
1208D
Restore Permutation
binary search
,
data structures
,
greedy
,
implementation
1900
x4651
1207G
Indie Album
data structures
,
dfs and similar
,
hashing
,
string suffix structures
,
strings
,
trees
2700
x949
1207F
Remainder Problem
brute force
,
data structures
,
implementation
2100
x4726
1204D2
Kirk and a Binary String (hard version)
data structures
,
greedy
,
math
,
strings
2100
x2972
1202C
You Are Given a WASD-string...
brute force
,
data structures
,
dp
,
greedy
,
implementation
,
math
,
strings
2100
x2402
1200F
Graph Traveler
brute force
,
data structures
,
dfs and similar
,
dp
,
graphs
,
implementation
,
math
,
number theory
2300
x911
1200D
White Lines
brute force
,
data structures
,
dp
,
implementation
,
two pointers
1900
x3923
1200A
Hotelier
brute force
,
data structures
,
implementation
800
x19942
1198B
Welfare State
binary search
,
brute force
,
data structures
,
sortings
1600
x9249
1197E
Culture Code
binary search
,
combinatorics
,
data structures
,
dp
,
shortest paths
,
sortings
2300
x1452
1196D2
RGB Substring (hard version)
data structures
,
dp
,
implementation
,
two pointers
1600
x9381
1195F
Geometers Anonymous Club
data structures
,
geometry
,
math
,
sortings
2500
x694
1195E
OpenStreetMap
data structures
,
two pointers
2100
x2833
1194E
Count The Rectangles
bitmasks
,
brute force
,
data structures
,
geometry
,
sortings
2200
x1749
1193B
Magic Tree
*special problem
,
data structures
,
dp
,
trees
x417
1192B
Dynamic Diameter
*special problem
,
data structures
,
dfs and similar
,
divide and conquer
,
trees
x1002
1190D
Tokitsukaze and Strange Rectangle
data structures
,
divide and conquer
,
sortings
,
two pointers
2000
x2212
1189C
Candies!
data structures
,
dp
,
implementation
,
math
1400
x10277
1187D
Subarray Sorting
data structures
,
sortings
2400
x2450
1185C2
Exam in BerSU (hard version)
brute force
,
data structures
,
greedy
,
math
1700
x7143
1184E3
Daleks' Invasion (hard)
data structures
,
dsu
,
graphs
,
trees
2400
x492
1184C2
Heidi and the Turing Test (Medium)
data structures
2200
x597
1182F
Maximum Sine
binary search
,
data structures
,
number theory
2700
x329
1182C
Beautiful Lyrics
data structures
,
greedy
,
strings
1700
x4380
1181D
Irrigation
binary search
,
data structures
,
implementation
,
sortings
,
trees
,
two pointers
2200
x2019
1179D
Fedor Runs for President
data structures
,
dp
,
trees
2700
x770
1179C
Serge and Dining Room
binary search
,
data structures
,
graph matchings
,
greedy
,
implementation
,
math
,
trees
2200
x1951
1179A
Valeriy and Deque
data structures
,
implementation
1500
x10124
1178G
The Awesomest Vertex
data structures
,
dfs and similar
3000
x411
1175G
Yet Another Partiton Problem
data structures
,
divide and conquer
,
dp
,
geometry
,
two pointers
3000
x431
1175F
The Number of Subpermutations
brute force
,
data structures
,
divide and conquer
,
hashing
,
math
2500
x1558
1175E
Minimal Segment Cover
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
greedy
,
implementation
,
trees
2200
x3194
1175B
Catch Overflow!
data structures
,
expression parsing
,
implementation
1600
x10254
1172F
Nauuo and Bug
data structures
3300
x403
1172E
Nauuo and ODT
data structures
3300
x289
1170D
Decoding of Integer Sequences
*special problem
,
data structures
,
implementation
x414
1167F
Scalar Queries
combinatorics
,
data structures
,
math
,
sortings
2300
x1571
1167E
Range Deleting
binary search
,
combinatorics
,
data structures
,
two pointers
2100
x2528
1166F
Vicky's Delivery Service
data structures
,
dsu
,
graphs
,
hashing
2400
x685
1165B
Polycarp Training
data structures
,
greedy
,
sortings
1000
x20326
1163F
Indecisive Taxi Fee
data structures
,
graphs
,
shortest paths
3000
x820
1163E
Magical Permutation
bitmasks
,
brute force
,
constructive algorithms
,
data structures
,
graphs
,
math
2400
x646
1163C2
Power Transmission (Hard Edition)
data structures
,
geometry
,
implementation
,
math
1900
x3525
1163B2
Cat Party (Hard Edition)
data structures
,
implementation
1600
x7091
1163B1
Cat Party (Easy Edition)
data structures
,
implementation
1500
x6878
1158C
Permutation recovery
constructive algorithms
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
math
,
sortings
2100
x1697
1157E
Minimum Array
binary search
,
data structures
,
greedy
1700
x8143
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