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2023-2024 ICPC, Asia Jakarta Regional Contest (Online Mirror, Unrated, ICPC Rules, Teams Preferred)
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Educational Codeforces Round 159 (Rated for Div. 2)
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two pointers
combine-tags-by-or
*combine tags by OR
2-sat
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combinatorics
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dfs and similar
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graph matchings
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Problems
#
Name
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x54456
489B
BerSU Ball
dfs and similar
,
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
1200
x43511
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x43152
1462A
Favorite Sequence
implementation
,
two pointers
800
x38070
1791C
Prepend and Append
implementation
,
two pointers
800
x36037
1343C
Alternating Subsequence
dp
,
greedy
,
two pointers
1200
x34681
466C
Number of Ways
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x32968
1843A
Sasha and Array Coloring
greedy
,
sortings
,
two pointers
800
x30818
1840A
Cipher Shifer
implementation
,
strings
,
two pointers
800
x30473
1873D
1D Eraser
greedy
,
implementation
,
two pointers
800
x28178
1354B
Ternary String
binary search
,
dp
,
implementation
,
two pointers
1200
x27758
1399C
Boats Competition
brute force
,
greedy
,
two pointers
1200
x26662
1359B
New Theatre Square
brute force
,
dp
,
greedy
,
implementation
,
two pointers
1000
x26416
1843B
Long Long
greedy
,
math
,
two pointers
800
x26262
1851B
Parity Sort
greedy
,
sortings
,
two pointers
800
x26060
1364A
XXXXX
brute force
,
data structures
,
number theory
,
two pointers
1200
x25472
600B
Queries about less or equal elements
binary search
,
data structures
,
sortings
,
two pointers
1300
x25307
1538C
Number of Pairs
binary search
,
data structures
,
math
,
two pointers
1300
x25274
1324D
Pair of Topics
binary search
,
data structures
,
sortings
,
two pointers
1400
x25022
1690D
Black and White Stripe
implementation
,
two pointers
1000
x24033
580B
Kefa and Company
binary search
,
sortings
,
two pointers
1500
x23365
978C
Letters
binary search
,
implementation
,
two pointers
1000
x23070
1840C
Ski Resort
combinatorics
,
math
,
two pointers
1000
x21494
1744C
Traffic Light
binary search
,
implementation
,
two pointers
1000
x21430
1547C
Pair Programming
greedy
,
two pointers
1100
x21233
1374D
Zero Remainder Array
math
,
sortings
,
two pointers
1400
x21130
1760D
Challenging Valleys
implementation
,
two pointers
1000
x20712
1669F
Eating Candies
binary search
,
data structures
,
greedy
,
two pointers
1100
x20686
1646B
Quality vs Quantity
brute force
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
800
x20375
1470A
Strange Birthday Party
binary search
,
dp
,
greedy
,
sortings
,
two pointers
1300
x20232
1133C
Balanced Team
sortings
,
two pointers
1200
x19963
1691B
Shoe Shuffling
constructive algorithms
,
greedy
,
implementation
,
two pointers
1000
x19843
1006C
Three Parts of the Array
binary search
,
data structures
,
two pointers
1200
x19293
1598C
Delete Two Elements
data structures
,
dp
,
implementation
,
math
,
two pointers
1200
x18917
1366B
Shuffle
math
,
two pointers
1300
x18838
1369C
RationalLee
greedy
,
math
,
sortings
,
two pointers
1400
x18519
1251A
Broken Keyboard
brute force
,
strings
,
two pointers
1000
x18096
1352E
Special Elements
brute force
,
implementation
,
two pointers
1500
x17977
961B
Lecture Sleep
data structures
,
dp
,
implementation
,
two pointers
1200
x17890
1692E
Binary Deque
binary search
,
implementation
,
two pointers
1200
x17826
1364B
Most socially-distanced subsequence
greedy
,
two pointers
1300
x17733
1847B
Hamon Odyssey
bitmasks
,
greedy
,
two pointers
1000
x17659
1389C
Good String
brute force
,
dp
,
greedy
,
two pointers
1500
x17586
1832B
Maximum Sum
brute force
,
sortings
,
two pointers
1100
x17390
676C
Vasya and String
binary search
,
dp
,
strings
,
two pointers
1500
x17094
1729D
Friends and the Restaurant
greedy
,
sortings
,
two pointers
1200
x17015
1656B
Subtract Operation
data structures
,
greedy
,
math
,
two pointers
1100
x16642
1741C
Minimize the Thickness
brute force
,
greedy
,
math
,
two pointers
1100
x16433
1746B
Rebellion
constructive algorithms
,
greedy
,
two pointers
800
x16258
1689A
Lex String
brute force
,
greedy
,
implementation
,
sortings
,
two pointers
800
x16041
1793C
Dora and Search
constructive algorithms
,
data structures
,
two pointers
1200
x15959
1827A
Counting Orders
combinatorics
,
math
,
sortings
,
two pointers
1100
x15867
251A
Points on Line
binary search
,
combinatorics
,
two pointers
1300
x15758
1535C
Unstable String
binary search
,
dp
,
greedy
,
implementation
,
strings
,
two pointers
1400
x15471
1257C
Dominated Subarray
greedy
,
implementation
,
sortings
,
strings
,
two pointers
1200
x15194
1789B
Serval and Inversion Magic
brute force
,
implementation
,
strings
,
two pointers
800
x15172
1304C
Air Conditioner
dp
,
greedy
,
implementation
,
sortings
,
two pointers
1500
x15141
1492C
Maximum width
binary search
,
data structures
,
dp
,
greedy
,
two pointers
1500
x14986
1628A
Meximum Array
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
,
two pointers
1400
x14672
1676F
Longest Strike
data structures
,
greedy
,
implementation
,
sortings
,
two pointers
1300
x14654
1701C
Schedule Management
binary search
,
greedy
,
implementation
,
two pointers
1400
x14526
1692G
2^Sort
data structures
,
dp
,
sortings
,
two pointers
1400
x14089
1419D2
Sage's Birthday (hard version)
binary search
,
brute force
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
1500
x13932
1519D
Maximum Sum of Products
brute force
,
dp
,
implementation
,
math
,
two pointers
1600
x13891
1610B
Kalindrome Array
greedy
,
two pointers
1100
x13803
1237B
Balanced Tunnel
data structures
,
sortings
,
two pointers
1300
x13802
1690E
Price Maximization
binary search
,
greedy
,
math
,
two pointers
1500
x13568
1736C1
Good Subarrays (Easy Version)
binary search
,
data structures
,
schedules
,
two pointers
1300
x13566
1582C
Grandma Capa Knits a Scarf
brute force
,
data structures
,
greedy
,
strings
,
two pointers
1200
x13381
1697C
awoo's Favorite Problem
binary search
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
strings
,
two pointers
1400
x13284
1899C
Yarik and Array
dp
,
greedy
,
two pointers
1100
x12975
1547E
Air Conditioners
data structures
,
dp
,
implementation
,
shortest paths
,
sortings
,
two pointers
1500
x12968
1553D
Backspace
dp
,
greedy
,
strings
,
two pointers
1500
x12743
1462E1
Close Tuples (easy version)
binary search
,
combinatorics
,
math
,
sortings
,
two pointers
1500
x12656
1381A2
Prefix Flip (Hard Version)
constructive algorithms
,
data structures
,
implementation
,
strings
,
two pointers
1700
x12496
701C
They Are Everywhere
binary search
,
strings
,
two pointers
1500
x12417
1721C
Min-Max Array Transformation
binary search
,
greedy
,
two pointers
1400
x12298
1719C
Fighting Tournament
binary search
,
data structures
,
implementation
,
two pointers
1400
x12232
427C
Checkposts
dfs and similar
,
graphs
,
two pointers
1700
x12174
6C
Alice, Bob and Chocolate
greedy
,
two pointers
1200
x12148
1265B
Beautiful Numbers
data structures
,
implementation
,
math
,
two pointers
1300
x12046
446A
DZY Loves Sequences
dp
,
implementation
,
two pointers
1600
x11974
1820B
JoJo's Incredible Adventures
math
,
strings
,
two pointers
1100
x11962
1792C
Min Max Sort
binary search
,
brute force
,
greedy
,
math
,
two pointers
1500
x11930
1343D
Constant Palindrome Sum
brute force
,
data structures
,
greedy
,
two pointers
1700
x11918
1333C
Eugene and an array
binary search
,
data structures
,
implementation
,
two pointers
1700
x11859
372A
Counting Kangaroos is Fun
binary search
,
greedy
,
sortings
,
two pointers
1600
x11821
1007A
Reorder the Array
combinatorics
,
data structures
,
math
,
sortings
,
two pointers
1300
x11761
387B
George and Round
brute force
,
greedy
,
two pointers
1200
x11699
86D
Powerful array
data structures
,
implementation
,
math
,
two pointers
2200
x11638
1537E1
Erase and Extend (Easy Version)
binary search
,
brute force
,
dp
,
greedy
,
hashing
,
implementation
,
string suffix structures
,
strings
,
two pointers
1600
x11601
1771B
Hossam and Friends
binary search
,
constructive algorithms
,
dp
,
two pointers
1400
x11472
165C
Another Problem on Strings
binary search
,
brute force
,
dp
,
math
,
strings
,
two pointers
1600
x11466
716B
Complete the Word
greedy
,
two pointers
1300
x11414
1873F
Money Trees
binary search
,
greedy
,
math
,
two pointers
1300
x11410
1416A
k-Amazing Numbers
binary search
,
data structures
,
implementation
,
two pointers
1500
x11238
702C
Cellular Network
binary search
,
implementation
,
two pointers
1500
x11234
1794C
Scoring Subsequences
binary search
,
greedy
,
math
,
two pointers
1300
x11205
1251C
Minimize The Integer
greedy
,
two pointers
1600
x11071
1305B
Kuroni and Simple Strings
constructive algorithms
,
greedy
,
strings
,
two pointers
1200
x11054
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