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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
1338B
Edge Weight Assignment
bitmasks
,
constructive algorithms
,
dfs and similar
,
greedy
,
math
,
trees
1800
x8462
1338A
Powered Addition
greedy
,
math
1500
x23951
1336B
Xenia and Colorful Gems
binary search
,
greedy
,
math
,
sortings
,
two pointers
1700
x11368
1336A
Linova and Kingdom
dfs and similar
,
dp
,
greedy
,
sortings
,
trees
1600
x20369
1335E2
Three Blocks Palindrome (hard version)
brute force
,
data structures
,
dp
,
two pointers
1800
x8349
1335E1
Three Blocks Palindrome (easy version)
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x10842
1334D
Minimum Euler Cycle
constructive algorithms
,
graphs
,
greedy
,
implementation
1800
x7301
1334C
Circle of Monsters
brute force
,
constructive algorithms
,
greedy
,
math
1600
x16599
1333C
Eugene and an array
binary search
,
data structures
,
implementation
,
two pointers
1700
x12571
1332D
Walk on Matrix
bitmasks
,
constructive algorithms
,
math
1700
x8181
1332C
K-Complete Word
dfs and similar
,
dsu
,
greedy
,
implementation
,
strings
1500
x16576
1332B
Composite Coloring
brute force
,
constructive algorithms
,
greedy
,
math
,
number theory
1400
x17575
1330B
Dreamoon Likes Permutations
implementation
,
math
1400
x14021
1329B
Dreamoon Likes Sequences
bitmasks
,
combinatorics
,
math
1700
x6691
1329A
Dreamoon Likes Coloring
constructive algorithms
,
greedy
,
implementation
,
math
1800
x9112
1328D
Carousel
constructive algorithms
,
dp
,
graphs
,
greedy
,
math
1800
x13159
1327E
Count The Blocks
combinatorics
,
dp
,
math
1800
x8941
1327C
Game with Chips
constructive algorithms
,
implementation
1600
x13419
1326D2
Prefix-Suffix Palindrome (Hard version)
binary search
,
greedy
,
hashing
,
string suffix structures
,
strings
1800
x10151
1326D1
Prefix-Suffix Palindrome (Easy version)
hashing
,
string suffix structures
,
strings
1500
x12086
1325D
Ehab the Xorcist
bitmasks
,
constructive algorithms
,
greedy
,
number theory
1700
x12104
1325C
Ehab and Path-etic MEXs
constructive algorithms
,
dfs and similar
,
greedy
,
trees
1500
x13644
1324F
Maximum White Subtree
dfs and similar
,
dp
,
graphs
,
trees
1800
x9979
1324E
Sleeping Schedule
dp
,
implementation
1700
x13533
1324D
Pair of Topics
binary search
,
data structures
,
sortings
,
two pointers
1400
x28237
1323B
Count Subrectangles
binary search
,
greedy
,
implementation
1500
x8980
1321C
Remove Adjacent
brute force
,
constructive algorithms
,
greedy
,
strings
1600
x9813
1320B
Navigation System
dfs and similar
,
graphs
,
shortest paths
1700
x6046
1320A
Journey Planning
data structures
,
dp
,
greedy
,
math
,
sortings
1400
x16347
1316C
Primitive Primes
constructive algorithms
,
math
,
ternary search
1800
x7282
1316B
String Modification
brute force
,
constructive algorithms
,
implementation
,
sortings
,
strings
1400
x11269
1313C1
Skyscrapers (easy version)
brute force
,
data structures
,
dp
,
greedy
1500
x10427
1313B
Different Rules
constructive algorithms
,
greedy
,
implementation
,
math
1700
x6672
1312D
Count the Arrays
combinatorics
,
math
1700
x9460
1312C
Adding Powers
bitmasks
,
greedy
,
implementation
,
math
,
number theory
,
ternary search
1400
x16526
1310A
Recommendations
data structures
,
greedy
,
sortings
1700
x5173
1307C
Cow and Message
brute force
,
dp
,
math
,
strings
1500
x11817
1305C
Kuroni and Impossible Calculation
brute force
,
combinatorics
,
math
,
number theory
1600
x14605
1304D
Shortest and Longest LIS
constructive algorithms
,
graphs
,
greedy
,
two pointers
1800
x6325
1304C
Air Conditioner
dp
,
greedy
,
implementation
,
sortings
,
two pointers
1500
x16374
1303C
Perfect Keyboard
dfs and similar
,
greedy
,
implementation
1600
x12155
1303B
National Project
math
1400
x15767
1301C
Ayoub's function
binary search
,
combinatorics
,
greedy
,
math
,
strings
1700
x9344
1301B
Motarack's Birthday
binary search
,
greedy
,
ternary search
1500
x14219
1299B
Aerodynamic
geometry
1800
x5247
1299A
Anu Has a Function
brute force
,
greedy
,
math
1500
x12028
1296E1
String Coloring (easy version)
constructive algorithms
,
dp
,
graphs
,
greedy
,
sortings
1800
x7477
1296D
Fight with Monsters
greedy
,
sortings
1500
x14253
1296C
Yet Another Walking Robot
data structures
,
implementation
1500
x14813
1295D
Same GCDs
math
,
number theory
1800
x8887
1295C
Obtain The String
dp
,
greedy
,
strings
1600
x12918
1295B
Infinite Prefixes
math
,
strings
1700
x9308
1294D
MEX maximizing
data structures
,
greedy
,
implementation
,
math
1600
x11729
1292B
Aroma's Search
brute force
,
constructive algorithms
,
geometry
,
greedy
,
implementation
1700
x6353
1292A
NEKO's Maze Game
data structures
,
dsu
,
implementation
1400
x13342
1290B
Irreducible Anagrams
binary search
,
constructive algorithms
,
data structures
,
strings
,
two pointers
1800
x5432
1290A
Mind Control
brute force
,
data structures
,
implementation
1600
x8567
1288C
Two Arrays
combinatorics
,
dp
1600
x12872
1287B
Hyperset
brute force
,
data structures
,
implementation
1500
x9440
1286B
Numbers on Tree
constructive algorithms
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
trees
1800
x4701
1286A
Garland
dp
,
greedy
,
sortings
1800
x8805
1285C
Fadi and LCM
brute force
,
math
,
number theory
1400
x23444
1284C
New Year and Permutation
combinatorics
,
math
1600
x8020
1284B
New Year and Ascent Sequence
binary search
,
combinatorics
,
data structures
,
dp
,
implementation
,
sortings
1400
x10824
1283E
New Year Parties
dp
,
greedy
1800
x6545
1283D
Christmas Trees
graphs
,
greedy
,
shortest paths
1800
x7782
1283C
Friends and Gifts
constructive algorithms
,
data structures
,
math
1500
x13130
1282C
Petya and Exam
greedy
,
sortings
,
two pointers
1800
x4310
1282B2
K for the Price of One (Hard Version)
dp
,
greedy
,
sortings
1600
x10186
1282B1
K for the Price of One (Easy Version)
dp
,
greedy
,
sortings
1400
x11484
1281B
Azamon Web Services
greedy
1600
x8290
1280B
Beingawesomeism
implementation
,
math
1800
x3936
1280A
Cut and Paste
implementation
,
math
1700
x5406
1279D
Santa's Bot
combinatorics
,
math
,
probabilities
1700
x6321
1279C
Stack of Presents
data structures
,
implementation
1400
x11694
1278C
Berry Jam
data structures
,
dp
,
greedy
,
implementation
1700
x8037
1278B
A and B
greedy
,
math
1500
x13288
1276A
As Simple as One and Two
dp
,
greedy
1400
x12315
1272D
Remove One Element
brute force
,
dp
1500
x16562
1270C
Make Good
bitmasks
,
constructive algorithms
,
math
1400
x14087
1269B
Modulo Equality
brute force
,
sortings
1500
x9157
1268A
Long Beautiful Integer
constructive algorithms
,
greedy
,
implementation
,
strings
1700
x8625
1267L
Lexicography
constructive algorithms
,
strings
1800
x3043
1267J
Just Arrange the Icons
greedy
,
implementation
,
math
1800
x2812
1267E
Elections
greedy
1700
x3236
1266C
Diverse Matrix
constructive algorithms
,
greedy
,
math
,
number theory
1400
x9693
1264A
Beautiful Regional Contest
greedy
,
implementation
1500
x10064
1263D
Secret Passwords
dfs and similar
,
dsu
,
graphs
1500
x14001
1263C
Everyone is a Winner!
binary search
,
math
,
meet-in-the-middle
,
number theory
1400
x13711
1263B
PIN Codes
greedy
,
implementation
1400
x11369
1260C
Infinite Fence
greedy
,
math
,
number theory
1700
x8239
1257D
Yet Another Monster Killing Problem
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
1700
x7542
1256D
Binary String Minimizing
greedy
1500
x12056
1256C
Platforms Jumping
greedy
1700
x6891
1256B
Minimize the Permutation
greedy
1400
x13080
1255C
League of Leesins
constructive algorithms
,
implementation
1600
x6705
1254B1
Send Boxes to Alice (Easy Version)
constructive algorithms
,
greedy
,
math
,
number theory
,
ternary search
,
two pointers
1800
x4657
1254A
Feeding Chicken
constructive algorithms
,
greedy
,
implementation
1700
x5180
1253D
Harmonious Graph
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
1700
x9214
1253C
Sweets Eating
dp
,
greedy
,
math
,
sortings
1500
x14238
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