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Problems
#
Name
1537D
Deleting Divisors
games
,
math
,
number theory
1700
x11891
1528B
Kavi on Pairing Duty
combinatorics
,
dp
,
math
1700
x8487
1516C
Baby Ehab Partitions Again
bitmasks
,
constructive algorithms
,
dp
,
math
1700
x11545
1512G
Short Task
brute force
,
dp
,
math
,
number theory
1700
x7825
1503B
3-Coloring
constructive algorithms
,
games
,
interactive
1700
x6848
1497E1
Square-Free Division (easy version)
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
1700
x8047
1491C
Pekora and Trampoline
brute force
,
data structures
,
dp
,
greedy
,
implementation
1700
x7727
1485C
Floor and Mod
binary search
,
brute force
,
math
,
number theory
1700
x9559
1479A
Searching Local Minimum
binary search
,
interactive
,
ternary search
1700
x11133
1478C
Nezzar and Symmetric Array
implementation
,
math
,
sortings
1700
x9498
1476D
Journey
dfs and similar
,
dp
,
dsu
,
implementation
1700
x8400
1474C
Array Destruction
brute force
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
1700
x12226
1473D
Program
data structures
,
dp
,
implementation
,
strings
1700
x9335
1472E
Correct Placement
binary search
,
data structures
,
dp
,
sortings
,
two pointers
1700
x7735
1469D
Ceil Divisions
brute force
,
constructive algorithms
,
math
,
number theory
1700
x9169
1468F
Full Turn
geometry
,
hashing
,
number theory
1700
x3592
1468D
Firecrackers
binary search
,
sortings
1700
x4469
1467B
Hills And Valleys
brute force
,
implementation
1700
x10724
1462E2
Close Tuples (hard version)
binary search
,
combinatorics
,
implementation
,
math
,
sortings
,
two pointers
1700
x9229
1453C
Triangles
greedy
,
implementation
1700
x5982
1451D
Circle Game
games
,
geometry
,
math
1700
x9273
1430D
String Deletion
binary search
,
data structures
,
greedy
,
two pointers
1700
x8672
1422C
Bargain
combinatorics
,
dp
,
math
1700
x8087
1413D
Shurikens
data structures
,
greedy
,
implementation
1700
x6341
1411C
Peaceful Rooks
dfs and similar
,
dsu
,
graphs
1700
x7775
1406C
Link Cut Centroids
constructive algorithms
,
dfs and similar
,
graphs
,
trees
1700
x9843
1400B
RPG Protagonist
brute force
,
greedy
,
math
1700
x10839
1393C
Pinkie Pie Eats Patty-cakes
constructive algorithms
,
greedy
,
math
,
sortings
1700
x10271
1392D
Omkar and Bed Wars
dp
,
greedy
1700
x8451
1383A
String Transformation 1
dsu
,
graphs
,
greedy
,
sortings
,
strings
,
trees
,
two pointers
1700
x10242
1381A2
Prefix Flip (Hard Version)
constructive algorithms
,
data structures
,
implementation
,
strings
,
two pointers
1700
x12768
1368D
AND, OR and square sum
bitmasks
,
greedy
,
math
1700
x11241
1365D
Solve The Maze
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
shortest paths
1700
x16198
1361A
Johnny and Contribution
constructive algorithms
,
graphs
,
greedy
,
sortings
1700
x8157
1360F
Spy-string
bitmasks
,
brute force
,
constructive algorithms
,
dp
,
hashing
,
strings
1700
x11879
1359C
Mixing Water
binary search
,
math
1700
x13291
1346E
Magic Tricks
*special problem
,
dp
,
graphs
1700
x369
1343D
Constant Palindrome Sum
brute force
,
data structures
,
greedy
,
two pointers
1700
x12218
1340B
Nastya and Scoreboard
bitmasks
,
dp
,
graphs
,
greedy
1700
x7574
1336B
Xenia and Colorful Gems
binary search
,
greedy
,
math
,
sortings
,
two pointers
1700
x11020
1335E1
Three Blocks Palindrome (easy version)
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x10471
1333C
Eugene and an array
binary search
,
data structures
,
implementation
,
two pointers
1700
x12187
1332D
Walk on Matrix
bitmasks
,
constructive algorithms
,
math
1700
x7872
1329B
Dreamoon Likes Sequences
bitmasks
,
combinatorics
,
math
1700
x6392
1325D
Ehab the Xorcist
bitmasks
,
constructive algorithms
,
greedy
,
number theory
1700
x11604
1324E
Sleeping Schedule
dp
,
implementation
1700
x12626
1320B
Navigation System
dfs and similar
,
graphs
,
shortest paths
1700
x5806
1313B
Different Rules
constructive algorithms
,
greedy
,
implementation
,
math
1700
x6466
1312D
Count the Arrays
combinatorics
,
math
1700
x8970
1310A
Recommendations
data structures
,
greedy
,
sortings
1700
x4977
1301C
Ayoub's function
binary search
,
combinatorics
,
greedy
,
math
,
strings
1700
x9060
1295B
Infinite Prefixes
math
,
strings
1700
x9075
1292B
Aroma's Search
brute force
,
constructive algorithms
,
geometry
,
greedy
,
implementation
1700
x6032
1280A
Cut and Paste
implementation
,
math
1700
x5163
1279D
Santa's Bot
combinatorics
,
math
,
probabilities
1700
x5920
1278C
Berry Jam
data structures
,
dp
,
greedy
,
implementation
1700
x7613
1268A
Long Beautiful Integer
constructive algorithms
,
greedy
,
implementation
,
strings
1700
x8292
1267E
Elections
greedy
1700
x2990
1260C
Infinite Fence
greedy
,
math
,
number theory
1700
x7872
1257D
Yet Another Monster Killing Problem
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
1700
x7215
1256C
Platforms Jumping
greedy
1700
x6650
1254A
Feeding Chicken
constructive algorithms
,
greedy
,
implementation
1700
x4992
1253D
Harmonious Graph
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
1700
x8852
1249E
By Elevator or Stairs?
dp
,
shortest paths
1700
x9242
1239A
Ivan the Fool and the Probability Theory
combinatorics
,
dp
,
math
1700
x7093
1237C1
Balanced Removals (Easier)
constructive algorithms
,
geometry
,
greedy
1700
x5866
1228C
Primes and Multiplication
math
,
number theory
1700
x8713
1227C
Messy
constructive algorithms
1700
x5323
1219C
Periodic integer number
implementation
,
strings
1700
x1757
1217C
The Number Of Good Substrings
binary search
,
bitmasks
,
brute force
1700
x7095
1216C
White Sheet
geometry
,
math
1700
x8782
1215D
Ticket Game
games
,
greedy
,
math
1700
x5974
1211C
Ice Cream
*special problem
,
greedy
,
sortings
1700
x478
1210B
Marcin and Training Camp
brute force
,
greedy
1700
x5665
1210A
Anadi and Domino
brute force
,
graphs
1700
x5120
1209D
Cow and Snacks
dfs and similar
,
dsu
,
graphs
1700
x8835
1204C
Anna, Svyatoslav and Maps
dp
,
graphs
,
greedy
,
shortest paths
1700
x6463
1203D2
Remove the Substring (hard version)
binary search
,
greedy
,
implementation
,
two pointers
1700
x7121
1202B
You Are Given a Decimal String...
brute force
,
dp
,
shortest paths
1700
x4502
1194D
1-2-K Game
games
,
math
1700
x6341
1185D
Extra Element
implementation
,
math
1700
x6438
1185C2
Exam in BerSU (hard version)
brute force
,
data structures
,
greedy
,
math
1700
x7153
1182C
Beautiful Lyrics
data structures
,
greedy
,
strings
1700
x4383
1176E
Cover it!
dfs and similar
,
dsu
,
graphs
,
shortest paths
,
trees
1700
x10472
1168A
Increasing by Modulo
binary search
,
greedy
1700
x6524
1157E
Minimum Array
binary search
,
data structures
,
greedy
1700
x8165
1157C2
Increasing Subsequence (hard version)
greedy
1700
x7775
1153C
Serval and Parenthesis Sequence
greedy
,
strings
1700
x7266
1148C
Crazy Diamond
constructive algorithms
,
sortings
1700
x5149
1146C
Tree Diameter
bitmasks
,
graphs
,
interactive
1700
x3524
1144F
Graph Without Long Directed Paths
dfs and similar
,
graphs
1700
x10816
1142A
The Beatles
brute force
,
math
1700
x3394
1141E
Superhero Battle
math
1700
x6596
1132C
Painting the Fence
brute force
1700
x5287
1131F
Asya And Kittens
constructive algorithms
,
dsu
1700
x6403
1129A1
Toy Train (Simplified)
brute force
,
greedy
1700
x3771
1118E
Yet Another Ball Problem
constructive algorithms
,
implementation
1700
x4041
1118D2
Coffee and Coursework (Hard Version)
binary search
,
greedy
1700
x6053
1118D1
Coffee and Coursework (Easy version)
brute force
,
greedy
1700
x5520
1118C
Palindromic Matrix
constructive algorithms
,
implementation
1700
x5652
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data structures
dfs and similar
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dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
meet-in-the-middle
number theory
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shortest paths
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strings
ternary search
trees
two pointers
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