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Name
1732C2
Sheikh (Hard Version)
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
two pointers
2100
x2455
1732C1
Sheikh (Easy version)
binary search
,
bitmasks
,
greedy
,
two pointers
1800
x5556
1732B
Ugu
brute force
,
dp
,
greedy
,
implementation
900
x13992
1732A
Bestie
brute force
,
combinatorics
,
constructive algorithms
,
implementation
,
math
,
number theory
1000
x14405
1731F
Function Sum
brute force
,
combinatorics
,
dp
,
fft
,
math
2500
x656
1731E
Graph Cost
dp
,
greedy
,
math
,
number theory
2000
x2653
1731D
Valiant's New Map
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x6698
1731C
Even Subarrays
bitmasks
,
brute force
,
hashing
,
math
,
number theory
1700
x8917
1731B
Kill Demodogs
greedy
,
math
1100
x16720
1731A
Joey Takes Money
greedy
,
math
800
x22111
1730F
Almost Sorted
bitmasks
,
data structures
,
dp
2700
x410
1730E
Maximums and Minimums
combinatorics
,
data structures
,
divide and conquer
,
number theory
2700
x614
1730D
Prefixes and Suffixes
constructive algorithms
,
strings
,
two pointers
2200
x2589
1730C
Minimum Notation
data structures
,
greedy
,
math
,
sortings
1200
x16033
1730B
Meeting on the Line
binary search
,
geometry
,
greedy
,
implementation
,
math
,
ternary search
1600
x11809
1730A
Planets
data structures
,
greedy
,
sortings
800
x22501
1729G
Cut Substrings
combinatorics
,
dp
,
hashing
,
strings
,
two pointers
2100
x2058
1729F
Kirei and the Linear Function
hashing
,
math
1900
x3988
1729E
Guess the Cycle Size
interactive
,
probabilities
1800
x6724
1729D
Friends and the Restaurant
greedy
,
sortings
,
two pointers
1200
x18780
1729C
Jumping on Tiles
constructive algorithms
,
strings
1100
x19403
1729B
Decode String
greedy
,
strings
800
x29350
1729A
Two Elevators
math
800
x38868
1728G
Illumination
binary search
,
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
two pointers
2700
x415
1728F
Fishermen
flows
,
graph matchings
,
greedy
3100
x404
1728E
Red-Black Pepper
brute force
,
data structures
,
greedy
,
math
,
number theory
2300
x1649
1728D
Letter Picking
constructive algorithms
,
dp
,
games
,
two pointers
1800
x6841
1728C
Digital Logarithm
data structures
,
greedy
,
sortings
1400
x15102
1728B
Best Permutation
constructive algorithms
,
greedy
800
x19913
1728A
Colored Balls: Revisited
brute force
,
greedy
,
implementation
,
sortings
800
x24345
1726H
Mainak and the Bleeding Polygon
binary search
,
geometry
,
implementation
,
math
3500
x80
1726G
A Certain Magical Party
combinatorics
,
data structures
,
greedy
,
sortings
3300
x282
1726F
Late For Work (submissions are not allowed)
data structures
,
greedy
,
schedules
,
shortest paths
2900
x131
1726E
Almost Perfect
combinatorics
,
fft
,
math
2400
x1352
1726D
Edge Split
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
probabilities
,
trees
2000
x3542
1726C
Jatayu's Balanced Bracket Sequence
data structures
,
dsu
,
graphs
,
greedy
1300
x12060
1726B
Mainak and Interesting Sequence
bitmasks
,
constructive algorithms
,
math
1100
x14633
1726A
Mainak and Array
greedy
,
math
900
x19795
1725M
Moving Both Hands
dp
,
graphs
,
shortest paths
1800
x2843
1725L
Lemper Cooking Competition
data structures
2400
x869
1725K
Kingdom of Criticism
data structures
,
dsu
2500
x578
1725J
Journey
dp
,
trees
2500
x356
1725I
Imitating the Key Tree
combinatorics
,
dsu
,
trees
2800
x184
1725H
Hot Black Hot White
constructive algorithms
,
math
1800
x2498
1725G
Garage
binary search
,
geometry
,
math
1500
x5589
1725F
Field Photography
bitmasks
,
data structures
,
sortings
2100
x938
1725E
Electrical Efficiency
combinatorics
,
data structures
,
dp
,
math
,
number theory
,
trees
2500
x432
1725D
Deducing Sortability
binary search
,
bitmasks
,
math
2900
x117
1725C
Circular Mirror
binary search
,
combinatorics
,
geometry
,
math
,
two pointers
2000
x1536
1725B
Basketball Together
binary search
,
greedy
,
sortings
1000
x11633
1725A
Accumulation of Dominoes
math
800
x9059
1722G
Even-Odd XOR
bitmasks
,
constructive algorithms
,
greedy
1500
x10310
1722F
L-shapes
dfs and similar
,
implementation
1700
x6515
1722E
Counting Rectangles
brute force
,
data structures
,
dp
,
implementation
1600
x10011
1722D
Line
greedy
,
sortings
1100
x22192
1722C
Word Game
data structures
,
implementation
800
x29365
1722B
Colourblindness
implementation
800
x43107
1722A
Spell Check
implementation
800
x46729
1721F
Matching Reduction
brute force
,
constructive algorithms
,
dfs and similar
,
flows
,
graph matchings
,
graphs
,
interactive
2800
x359
1721E
Prefix Function Queries
dfs and similar
,
dp
,
hashing
,
string suffix structures
,
strings
,
trees
2200
x1808
1721D
Maximum AND
bitmasks
,
dfs and similar
,
divide and conquer
,
greedy
,
sortings
1800
x6286
1721C
Min-Max Array Transformation
binary search
,
greedy
,
two pointers
1400
x12959
1721B
Deadly Laser
implementation
1000
x21524
1721A
Image
greedy
,
implementation
800
x26581
1720E
Misha and Paintings
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
2700
x735
1720D2
Xor-Subsequence (hard version)
bitmasks
,
data structures
,
dp
,
strings
,
trees
2400
x1728
1720D1
Xor-Subsequence (easy version)
bitmasks
,
brute force
,
dp
,
strings
,
trees
,
two pointers
1800
x5713
1720C
Corners
greedy
,
implementation
1200
x16301
1720B
Interesting Sum
brute force
,
data structures
,
greedy
,
math
,
sortings
800
x20747
1720A
Burenka Plays with Fractions
math
,
number theory
900
x21716
1719C
Fighting Tournament
binary search
,
data structures
,
implementation
,
two pointers
1400
x12858
1719B
Mathematical Circus
constructive algorithms
,
math
800
x18286
1719A
Chip Game
games
,
math
800
x24990
1718F
Burenka, an Array and Queries
data structures
,
math
,
number theory
3300
x145
1718E
Impressionism
constructive algorithms
,
graphs
,
implementation
,
math
3500
x103
1718D
Permutation for Burenka
data structures
,
graph matchings
,
greedy
,
math
,
trees
3300
x287
1718C
Tonya and Burenka-179
data structures
,
greedy
,
math
,
number theory
2400
x1514
1718B
Fibonacci Strings
greedy
,
implementation
,
math
,
number theory
2000
x2874
1718A2
Burenka and Traditions (hard version)
data structures
,
dp
,
greedy
1900
x4998
1718A1
Burenka and Traditions (easy version)
dp
,
greedy
1800
x5486
1717F
Madoka and The First Session
constructive algorithms
,
flows
,
graph matchings
,
graphs
,
implementation
2500
x510
1717E
Madoka and The Best University
math
,
number theory
2200
x2466
1717D
Madoka and The Corruption Scheme
combinatorics
,
constructive algorithms
,
greedy
,
math
1900
x4249
1717C
Madoka and Formal Statement
greedy
1300
x14238
1717B
Madoka and Underground Competitions
constructive algorithms
,
implementation
1100
x14477
1717A
Madoka and Strange Thoughts
math
,
number theory
800
x19120
1716F
Bags with Balls
combinatorics
,
dp
,
math
,
number theory
2500
x999
1716E
Swap and Maximum Block
bitmasks
,
data structures
,
dfs and similar
,
divide and conquer
,
dp
2500
x1022
1716D
Chip Move
brute force
,
dp
,
math
2000
x4981
1716C
Robot in a Hallway
data structures
,
dp
,
greedy
,
implementation
,
ternary search
2000
x4007
1716B
Permutation Chain
constructive algorithms
,
math
800
x21187
1716A
2-3 Moves
greedy
,
math
800
x31372
1715F
Crop Squares
constructive algorithms
,
geometry
,
interactive
,
math
2700
x501
1715E
Long Way Home
data structures
,
divide and conquer
,
dp
,
geometry
,
graphs
,
greedy
,
shortest paths
2400
x1602
1715D
2+ doors
2-sat
,
bitmasks
,
graphs
,
greedy
1900
x4914
1715C
Monoblock
combinatorics
,
data structures
,
implementation
,
math
1700
x8327
1715B
Beautiful Array
constructive algorithms
,
greedy
,
math
1000
x20061
1715A
Crossmarket
constructive algorithms
,
greedy
,
math
800
x23174
1714G
Path Prefixes
binary search
,
data structures
,
dfs and similar
,
trees
1700
x7096
1714F
Build a Tree and That Is It
constructive algorithms
,
implementation
,
trees
1900
x3064
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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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