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Problems
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Name
1706E
Qpwoeirut and Vertices
binary search
,
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
greedy
,
trees
2300
x2337
1706D2
Chopping Carrots (Hard Version)
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
2400
x1645
1706D1
Chopping Carrots (Easy Version)
binary search
,
brute force
,
constructive algorithms
,
greedy
,
number theory
1700
x6638
1706C
Qpwoeirut And The City
dp
,
flows
,
greedy
,
implementation
1400
x14389
1706B
Making Towers
dp
,
greedy
,
math
1100
x16172
1706A
Another String Minimization Problem
2-sat
,
constructive algorithms
,
greedy
,
string suffix structures
,
strings
800
x22521
1705F
Mark and the Online Exam
bitmasks
,
constructive algorithms
,
interactive
,
probabilities
2900
x569
1705E
Mark and Professor Koro
binary search
,
bitmasks
,
brute force
,
combinatorics
,
data structures
,
greedy
2300
x1968
1705D
Mark and Lightbulbs
combinatorics
,
constructive algorithms
,
greedy
,
math
,
sortings
1800
x6072
1705C
Mark and His Unfinished Essay
brute force
,
implementation
1400
x12935
1705B
Mark the Dust Sweeper
constructive algorithms
,
greedy
,
implementation
900
x22091
1705A
Mark the Photographer
greedy
,
sortings
800
x24770
1704H2
Game of AI (hard version)
combinatorics
,
fft
,
math
3500
x72
1704H1
Game of AI (easy version)
combinatorics
,
constructive algorithms
,
dp
,
fft
,
math
3200
x168
1704G
Mio and Lucky Array
constructive algorithms
,
fft
,
math
,
strings
3500
x95
1704F
Colouring Game
constructive algorithms
,
dp
,
games
2600
x921
1704E
Count Seconds
brute force
,
constructive algorithms
,
dp
,
graphs
,
implementation
,
math
2200
x2208
1704D
Magical Array
constructive algorithms
,
hashing
,
implementation
,
math
1900
x4817
1704C
Virus
greedy
,
implementation
,
sortings
1200
x14275
1704B
Luke is a Foodie
brute force
,
greedy
,
implementation
1000
x16179
1704A
Two 0-1 Sequences
constructive algorithms
,
greedy
800
x15751
1703G
Good Key, Bad Key
bitmasks
,
brute force
,
dp
,
greedy
,
math
1600
x9913
1703F
Yet Another Problem About Pairs Satisfying an Inequality
binary search
,
data structures
,
dp
,
greedy
,
sortings
1300
x17974
1703E
Mirror Grid
implementation
1200
x16718
1703D
Double Strings
brute force
,
data structures
,
strings
1100
x24159
1703C
Cypher
brute force
,
implementation
,
strings
800
x33906
1703B
ICPC Balloons
data structures
,
implementation
800
x44840
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x61765
1702G2
Passable Paths (hard version)
data structures
,
dfs and similar
,
trees
2000
x4258
1702G1
Passable Paths (easy version)
dfs and similar
,
trees
1900
x5071
1702F
Equate Multisets
constructive algorithms
,
data structures
,
greedy
,
math
,
number theory
1700
x7880
1702E
Split Into Two Sets
dfs and similar
,
dsu
,
graphs
1600
x12211
1702D
Not a Cheap String
greedy
1000
x22858
1702C
Train and Queries
data structures
,
greedy
1100
x21382
1702B
Polycarp Writes a String from Memory
greedy
800
x26825
1702A
Round Down the Price
constructive algorithms
800
x33283
1701F
Points
combinatorics
,
data structures
,
implementation
,
math
,
matrices
2500
x879
1701E
Text Editor
brute force
,
dp
,
greedy
,
strings
2500
x1052
1701D
Permutation Restoration
binary search
,
data structures
,
greedy
,
math
,
sortings
,
two pointers
1900
x5446
1701C
Schedule Management
binary search
,
greedy
,
implementation
,
two pointers
1400
x15616
1701B
Permutation
greedy
800
x19929
1701A
Grass Field
implementation
800
x25788
1700F
Puzzle
constructive algorithms
,
dp
,
greedy
2600
x828
1700E
Serega the Pirate
brute force
,
constructive algorithms
2600
x821
1700D
River Locks
binary search
,
dp
,
greedy
,
math
1900
x5808
1700C
Helping the Nature
constructive algorithms
,
data structures
,
greedy
1700
x10425
1700B
Palindromic Numbers
constructive algorithms
,
implementation
,
math
1100
x18213
1700A
Optimal Path
constructive algorithms
,
greedy
,
math
800
x22516
1699E
Three Days Grace
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
2600
x1071
1699D
Almost Triple Deletions
data structures
,
dp
,
greedy
2300
x3013
1699C
The Third Problem
combinatorics
,
constructive algorithms
,
math
1700
x9343
1699B
Almost Ternary Matrix
bitmasks
,
constructive algorithms
,
matrices
900
x19117
1699A
The Third Three Number Problem
constructive algorithms
,
math
800
x23598
1698G
Long Binary String
bitmasks
,
math
,
matrices
,
meet-in-the-middle
,
number theory
2900
x299
1698F
Equal Reversal
constructive algorithms
,
graphs
,
implementation
,
math
2800
x551
1698E
PermutationForces II
brute force
,
combinatorics
,
greedy
,
sortings
,
trees
,
two pointers
2300
x1564
1698D
Fixed Point Guessing
binary search
,
constructive algorithms
,
interactive
1600
x8598
1698C
3SUM Closure
brute force
,
data structures
1300
x17820
1698B
Rising Sand
constructive algorithms
,
greedy
,
implementation
800
x20624
1698A
XOR Mixup
bitmasks
,
brute force
800
x27692
1697F
Too Many Constraints
2-sat
,
constructive algorithms
,
graphs
,
implementation
2800
x510
1697E
Coloring
brute force
,
combinatorics
,
constructive algorithms
,
dp
,
geometry
,
graphs
,
greedy
,
implementation
,
math
2400
x1131
1697D
Guess The String
binary search
,
constructive algorithms
,
interactive
1900
x4247
1697C
awoo's Favorite Problem
binary search
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
strings
,
two pointers
1400
x13900
1697B
Promo
greedy
,
sortings
900
x25330
1697A
Parkway Walk
greedy
,
implementation
800
x25360
1696H
Maximum Product?
brute force
,
combinatorics
,
dp
,
greedy
,
implementation
,
math
,
two pointers
3500
x141
1696G
Fishingprince Plays With Array Again
brute force
,
data structures
,
geometry
,
math
3300
x263
1696F
Tree Recovery
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
trees
2600
x836
1696E
Placing Jinas
combinatorics
,
math
2000
x3809
1696D
Permutation Graph
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
greedy
,
shortest paths
1900
x5149
1696C
Fishingprince Plays With Array
constructive algorithms
,
greedy
,
implementation
,
math
1400
x11278
1696B
NIT Destroys the Universe
greedy
900
x19143
1696A
NIT orz!
bitmasks
,
greedy
800
x18061
1695E
Ambiguous Dominoes
constructive algorithms
,
dfs and similar
,
graphs
2700
x422
1695D2
Tree Queries (Hard Version)
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
2300
x1908
1695D1
Tree Queries (Easy Version)
brute force
,
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
2200
x2077
1695C
Zero Path
brute force
,
data structures
,
dp
,
graphs
,
greedy
,
shortest paths
1700
x10326
1695B
Circle Game
games
,
greedy
1000
x17970
1695A
Subrectangle Guess
games
800
x16093
1694B
Paranoid String
constructive algorithms
,
greedy
1200
x18446
1694A
Creep
greedy
,
implementation
800
x22085
1693F
I Might Be Wrong
binary search
,
greedy
,
two pointers
3400
x273
1693E
Outermost Maximums
data structures
,
greedy
3400
x368
1693D
Decinc Dividing
brute force
,
data structures
,
divide and conquer
,
dp
,
greedy
2800
x768
1693C
Keshi in Search of AmShZ
graphs
,
greedy
,
shortest paths
2300
x2423
1693B
Fake Plastic Trees
dfs and similar
,
dp
,
greedy
,
trees
1700
x8023
1693A
Directional Increase
greedy
1300
x15587
1692H
Gambling
data structures
,
dp
,
greedy
,
math
1700
x7003
1692G
2^Sort
data structures
,
dp
,
sortings
,
two pointers
1400
x15744
1692F
3SUM
brute force
,
math
1300
x21060
1692E
Binary Deque
binary search
,
implementation
,
two pointers
1200
x19728
1692D
The Clock
brute force
,
implementation
1100
x18630
1692C
Where's the Bishop?
implementation
800
x32285
1692B
All Distinct
greedy
,
sortings
800
x32579
1692A
Marathon
implementation
800
x59057
1691F
K-Set Tree
combinatorics
,
dfs and similar
,
dp
,
math
,
trees
2500
x900
1691E
Number of Groups
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
2300
x1728
1691D
Max GEQ Sum
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
implementation
,
two pointers
1800
x5414
1691C
Sum of Substrings
brute force
,
constructive algorithms
,
greedy
,
math
,
strings
1400
x14979
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2-sat
binary search
bitmasks
brute force
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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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number theory
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shortest paths
sortings
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strings
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trees
two pointers
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