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dp
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
1478B
Nezzar and Lucky Number
brute force
,
dp
,
greedy
,
math
1100
x18032
1846C
Rudolf and the Another Competition
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
1200
x17933
1686B
Odd Subarrays
dp
,
greedy
800
x17897
1807G1
Subsequence Addition (Easy Version)
brute force
,
data structures
,
dp
,
greedy
,
implementation
,
sortings
1100
x17822
126B
Password
binary search
,
dp
,
hashing
,
string suffix structures
,
strings
1700
x17772
1946B
Maximum Sum
dp
,
greedy
,
math
1100
x17754
1807G2
Subsequence Addition (Hard Version)
bitmasks
,
dp
,
greedy
,
implementation
,
sortings
1100
x17668
538B
Quasi Binary
constructive algorithms
,
dp
,
greedy
,
implementation
1400
x17595
1553C
Penalty
bitmasks
,
brute force
,
dp
,
greedy
1200
x17306
1466C
Canine poetry
dp
,
greedy
,
strings
1300
x17301
1843D
Apple Tree
combinatorics
,
dfs and similar
,
dp
,
math
,
trees
1200
x17023
1420C1
Pokémon Army (easy version)
constructive algorithms
,
dp
,
greedy
1300
x17013
1566C
MAX-MEX Cut
bitmasks
,
constructive algorithms
,
dp
,
greedy
1000
x17006
1113A
Sasha and His Trip
dp
,
greedy
,
math
900
x16977
1661B
Getting Zero
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
shortest paths
1300
x16976
977F
Consecutive Subsequence
dp
1700
x16963
1713C
Build Permutation
constructive algorithms
,
dp
,
math
1200
x16818
1919C
Grouping Increases
data structures
,
dp
,
greedy
1400
x16780
1245C
Constanze's Machine
dp
1400
x16758
289B
Polo the Penguin and Matrix
brute force
,
dp
,
implementation
,
sortings
,
ternary search
1400
x16748
118D
Caesar's Legions
dp
1700
x16677
1485B
Replace and Keep Sorted
dp
,
implementation
,
math
1200
x16652
1934B
Yet Another Coin Problem
brute force
,
dp
,
greedy
,
math
1200
x16573
1941D
Rudolf and the Ball Game
dfs and similar
,
dp
,
implementation
1200
x16514
1029B
Creating the Contest
dp
,
greedy
,
math
1200
x16392
1859C
Another Permutation Problem
brute force
,
dp
,
greedy
,
math
1200
x16291
1706B
Making Towers
dp
,
greedy
,
math
1100
x16212
1923B
Monsters Attack!
dp
,
greedy
,
implementation
1100
x16102
1535C
Unstable String
binary search
,
dp
,
greedy
,
implementation
,
strings
,
two pointers
1400
x16082
1900B
Laura and Operations
dp
,
math
900
x15954
1692G
2^Sort
data structures
,
dp
,
sortings
,
two pointers
1400
x15906
839C
Journey
dfs and similar
,
dp
,
graphs
,
probabilities
,
trees
1500
x15886
1272D
Remove One Element
brute force
,
dp
1500
x15820
1389B
Array Walk
brute force
,
dp
,
greedy
1600
x15799
1304C
Air Conditioner
dp
,
greedy
,
implementation
,
sortings
,
two pointers
1500
x15765
522A
Reposts
*special problem
,
dfs and similar
,
dp
,
graphs
,
trees
1200
x15710
706C
Hard problem
dp
,
strings
1600
x15627
1492C
Maximum width
binary search
,
data structures
,
dp
,
greedy
,
two pointers
1500
x15565
1443B
Saving the City
dp
,
greedy
,
math
,
sortings
1300
x15489
1320A
Journey Planning
data structures
,
dp
,
greedy
,
math
,
sortings
1400
x15444
1451C
String Equality
dp
,
greedy
,
hashing
,
implementation
,
strings
1400
x15206
1042B
Vitamins
bitmasks
,
brute force
,
dp
,
implementation
1200
x15188
1373D
Maximum Sum on Even Positions
divide and conquer
,
dp
,
greedy
,
implementation
1600
x14949
1879C
Make it Alternating
combinatorics
,
dp
,
greedy
1300
x14886
1844C
Particles
dp
,
greedy
,
implementation
,
math
1300
x14811
1108D
Diverse Garland
constructive algorithms
,
dp
,
greedy
1400
x14700
1637B
MEX and Array
brute force
,
dp
,
greedy
,
math
1100
x14615
1519D
Maximum Sum of Products
brute force
,
dp
,
implementation
,
math
,
two pointers
1600
x14580
1391C
Cyclic Permutations
combinatorics
,
dp
,
graphs
,
math
1500
x14548
1706C
Qpwoeirut And The City
dp
,
flows
,
greedy
,
implementation
1400
x14437
1948C
Arrow Path
brute force
,
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
shortest paths
1300
x14329
1753A1
Make Nonzero Sum (easy version)
constructive algorithms
,
dp
,
greedy
1300
x14279
1676G
White-Black Balanced Subtrees
dfs and similar
,
dp
,
graphs
,
trees
1300
x14173
467C
George and Job
dp
,
implementation
1700
x14088
1732B
Ugu
brute force
,
dp
,
greedy
,
implementation
900
x13999
1178B
WOW Factor
dp
,
strings
1300
x13896
1459B
Move and Turn
dp
,
math
1300
x13892
1528A
Parsa's Humongous Tree
dfs and similar
,
divide and conquer
,
dp
,
greedy
,
trees
1600
x13863
1176C
Lose it!
dp
,
greedy
,
implementation
1300
x13834
1547E
Air Conditioners
data structures
,
dp
,
implementation
,
shortest paths
,
sortings
,
two pointers
1500
x13833
1553B
Reverse String
brute force
,
dp
,
hashing
,
implementation
,
strings
1300
x13820
1253C
Sweets Eating
dp
,
greedy
,
math
,
sortings
1500
x13802
1200B
Block Adventure
dp
,
greedy
1200
x13625
161D
Distance in Tree
dfs and similar
,
dp
,
trees
1800
x13560
1536C
Diluc and Kaeya
data structures
,
dp
,
hashing
,
number theory
1500
x13550
1395C
Boboniu and Bit Operations
bitmasks
,
brute force
,
dp
,
greedy
1600
x13502
349B
Color the Fence
data structures
,
dp
,
greedy
,
implementation
1700
x13487
1245B
Restricted RPS
constructive algorithms
,
dp
,
greedy
1200
x13435
1644C
Increase Subarray Sums
brute force
,
dp
,
greedy
,
implementation
1400
x13343
1553D
Backspace
dp
,
greedy
,
strings
,
two pointers
1500
x13323
1845C
Strong Password
binary search
,
dp
,
greedy
,
strings
1400
x13319
1513C
Add One
dp
,
matrices
1600
x13205
1646C
Factorials and Powers of Two
bitmasks
,
brute force
,
constructive algorithms
,
dp
,
math
1500
x13149
295B
Greg and Graph
dp
,
graphs
,
shortest paths
1700
x13104
987C
Three displays
brute force
,
dp
,
implementation
1400
x13088
1766C
Hamiltonian Wall
dp
,
implementation
1300
x13083
1937B
Binary Path
dp
,
greedy
,
implementation
1300
x13020
1633D
Make Them Equal
dp
,
greedy
1600
x13006
276D
Little Girl and Maximum XOR
bitmasks
,
dp
,
greedy
,
implementation
,
math
1700
x12970
1771B
Hossam and Friends
binary search
,
constructive algorithms
,
dp
,
two pointers
1400
x12821
1904B
Collecting Game
binary search
,
dp
,
greedy
,
sortings
,
two pointers
1100
x12807
998B
Cutting
dp
,
greedy
,
sortings
1200
x12741
5C
Longest Regular Bracket Sequence
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
,
strings
1900
x12660
1324E
Sleeping Schedule
dp
,
implementation
1700
x12573
1295C
Obtain The String
dp
,
greedy
,
strings
1600
x12553
1328D
Carousel
constructive algorithms
,
dp
,
graphs
,
greedy
,
math
1800
x12542
1534C
Little Alawn's Puzzle
combinatorics
,
dp
,
dsu
,
graphs
,
math
1300
x12485
1830A
Copil Copac Draws Trees
dfs and similar
,
dp
,
graphs
,
trees
1400
x12429
1860C
Game on Permutation
data structures
,
dp
,
games
,
greedy
1400
x12396
1140D
Minimum Triangulation
dp
,
greedy
,
math
1200
x12369
1461B
Find the Spruce
brute force
,
dp
,
implementation
1400
x12354
1924A
Did We Get Everything Covered?
constructive algorithms
,
dp
,
greedy
,
shortest paths
,
strings
1500
x12300
1288C
Two Arrays
combinatorics
,
dp
1600
x12284
1537E1
Erase and Extend (Easy Version)
binary search
,
brute force
,
dp
,
greedy
,
hashing
,
implementation
,
string suffix structures
,
strings
,
two pointers
1600
x12255
1632C
Strange Test
binary search
,
bitmasks
,
brute force
,
dp
,
math
1600
x12240
446A
DZY Loves Sequences
dp
,
implementation
,
two pointers
1600
x12234
1847C
Vampiric Powers, anyone?
bitmasks
,
brute force
,
dp
,
greedy
1400
x12206
1234C
Pipes
dp
,
implementation
1500
x12200
505B
Mr. Kitayuta's Colorful Graph
dfs and similar
,
dp
,
dsu
,
graphs
1400
x12087
1215B
The Number of Products
combinatorics
,
dp
,
implementation
1400
x12075
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