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Rayan
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Before contest
Codeforces Round 998 (Div. 3)
00:13:47
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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
1889C1
Doremy's Drying Plan (Easy Version)
brute force
,
data structures
,
dp
,
greedy
,
sortings
2000
x3412
1889B
Doremy's Connecting Plan
constructive algorithms
,
greedy
,
math
,
sortings
1700
x7630
1889A
Qingshan Loves Strings 2
constructive algorithms
,
greedy
,
implementation
1300
x13687
1887F
Minimum Segments
constructive algorithms
3400
x184
1887E
Good Colorings
binary search
,
constructive algorithms
,
graphs
,
interactive
3100
x391
1887D
Split
binary search
,
data structures
,
divide and conquer
,
dsu
,
math
,
trees
,
two pointers
2700
x1006
1887C
Minimum Array
binary search
,
brute force
,
constructive algorithms
,
data structures
,
greedy
,
hashing
,
two pointers
2400
x1836
1887B
Time Travel
binary search
,
graphs
,
shortest paths
1900
x3154
1886F
Diamond Theft
data structures
,
greedy
3300
x195
1886E
I Wanna be the Team Leader
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
math
,
sortings
,
two pointers
2400
x1551
1886D
Monocarp and the Set
combinatorics
,
data structures
,
math
2100
x3691
1886C
Decreasing String
implementation
,
strings
1600
x12215
1886B
Fear of the Dark
binary search
,
geometry
,
math
1200
x16587
1886A
Sum of Three
brute force
,
constructive algorithms
,
math
800
x26226
1885A
Deterministic Scheduling for Extended Reality over 5G and Beyond
*special problem
1884E
Hard Design
greedy
,
implementation
,
math
2800
x327
1884D
Counting Rhyme
dp
,
math
,
number theory
2100
x3376
1884C
Medium Design
brute force
,
data structures
,
dp
,
greedy
,
sortings
1700
x6352
1884B
Haunted House
binary search
,
greedy
,
math
,
two pointers
1100
x13012
1884A
Simple Design
brute force
,
greedy
,
math
800
x17760
1883G2
Dances (Hard Version)
binary search
,
greedy
,
sortings
,
two pointers
1900
x5622
1883G1
Dances (Easy version)
binary search
,
greedy
,
two pointers
1400
x12056
1883F
You Are So Beautiful
data structures
1400
x10033
1883E
Look Back
bitmasks
,
greedy
1700
x8494
1883D
In Love
data structures
,
greedy
1500
x12279
1883C
Raspberries
dp
,
math
1000
x30191
1883B
Chemistry
strings
900
x35488
1883A
Morning
math
800
x26321
1882E2
Two Permutations (Hard Version)
constructive algorithms
3100
x304
1882E1
Two Permutations (Easy Version)
brute force
,
constructive algorithms
,
greedy
,
number theory
2400
x1053
1882D
Tree XOR
bitmasks
,
dfs and similar
,
dp
,
greedy
,
trees
1900
x5723
1882C
Card Game
brute force
,
greedy
1500
x12850
1882B
Sets and Union
bitmasks
,
brute force
,
constructive algorithms
,
greedy
1300
x15876
1882A
Increasing Sequence
greedy
800
x25687
1881G
Anya and the Mysterious String
binary search
,
data structures
2000
x2473
1881F
Minimum Maximum Distance
dfs and similar
,
dp
,
graphs
,
shortest paths
,
trees
1700
x7323
1881E
Block Sequence
dp
1500
x15633
1881D
Divide and Equalize
math
,
number theory
1300
x18708
1881C
Perfect Square
brute force
,
implementation
1200
x17536
1881B
Three Threadlets
math
900
x26101
1881A
Don't Try to Count
brute force
,
strings
800
x34737
1879F
Last Man Standing
brute force
,
data structures
,
number theory
2800
x530
1879E
Interactive Game with Coloring
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
,
implementation
,
interactive
,
trees
2400
x1299
1879D
Sum of XOR Functions
bitmasks
,
combinatorics
,
divide and conquer
,
dp
,
math
1700
x7778
1879C
Make it Alternating
combinatorics
,
dp
,
greedy
1300
x18092
1879B
Chips on the Board
constructive algorithms
,
greedy
900
x23031
1879A
Rigged!
greedy
800
x23475
1878G
wxhtzdy ORO Tree
binary search
,
bitmasks
,
brute force
,
data structures
,
dfs and similar
,
implementation
,
trees
2300
x1238
1878F
Vasilije Loves Number Theory
brute force
,
math
,
number theory
1900
x4265
1878E
Iva & Pav
binary search
,
bitmasks
,
data structures
,
greedy
1400
x13782
1878D
Reverse Madness
data structures
,
greedy
1600
x8756
1878C
Vasilije in Cacak
math
900
x35784
1878B
Aleksa and Stack
constructive algorithms
,
math
800
x32095
1878A
How Much Does Daytona Cost?
greedy
800
x47968
1877C
Joyboard
math
,
number theory
1200
x11387
1877A
Goals of Victory
math
800
x26294
1876G
Clubstep
binary search
,
brute force
,
data structures
,
greedy
,
trees
3500
x145
1876F
Indefinite Clownfish
binary search
,
graphs
3500
x152
1876E
Ball-Stackable
constructive algorithms
,
data structures
,
dp
,
trees
3300
x290
1876D
Lexichromatography
combinatorics
,
dfs and similar
,
dsu
,
graphs
,
two pointers
2500
x914
1876C
Autosynthesis
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
sortings
2100
x2385
1876B
Effects of Anti Pimples
combinatorics
,
number theory
,
sortings
1500
x8721
1876A
Helmets in Night Light
greedy
,
sortings
1000
x19732
1875D
Jellyfish and Mex
dp
1600
x9250
1875C
Jellyfish and Green Apple
bitmasks
,
greedy
,
math
,
number theory
1400
x12155
1875A
Jellyfish and Undertale
brute force
,
greedy
900
x27884
1874G
Jellyfish and Inscryption
dp
3500
x102
1874F
Jellyfish and OEIS
dp
3500
x255
1874E
Jellyfish and Hack
dp
,
math
3000
x338
1874D
Jellyfish and Miku
divide and conquer
,
dp
,
math
,
probabilities
2800
x758
1874C
Jellyfish and EVA
dp
,
graphs
,
greedy
,
math
,
probabilities
2300
x1779
1874B
Jellyfish and Math
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
,
shortest paths
2400
x1180
1874A
Jellyfish and Game
brute force
,
games
,
greedy
,
implementation
1200
x17556
1873H
Mad City
dfs and similar
,
dsu
,
games
,
graphs
,
shortest paths
,
trees
1700
x7809
1873G
ABBC or BACB
constructive algorithms
,
greedy
1500
x14092
1873F
Money Trees
binary search
,
greedy
,
math
,
two pointers
1300
x16550
1873E
Building an Aquarium
binary search
,
sortings
1100
x28851
1873D
1D Eraser
greedy
,
implementation
,
two pointers
800
x36537
1873C
Target Practice
implementation
,
math
800
x43986
1873B
Good Kid
brute force
,
greedy
,
math
800
x51361
1873A
Short Sort
brute force
,
implementation
800
x57447
1872G
Replace With Product
brute force
,
greedy
,
math
2000
x4422
1872F
Selling a Menagerie
dfs and similar
,
dsu
,
graphs
,
implementation
,
math
1800
x6575
1872E
Data Structures Fan
binary search
,
bitmasks
,
data structures
,
dp
1500
x14621
1872D
Plus Minus Permutation
math
1200
x25791
1872C
Non-coprime Split
math
,
number theory
1100
x24073
1872B
The Corridor or There and Back Again
greedy
,
implementation
900
x28423
1872A
Two Vessels
brute force
,
greedy
,
math
800
x39895
1870H
Standard Graph Problem
data structures
,
graphs
,
greedy
,
trees
3500
x88
1870G
MEXanization
data structures
3300
x227
1870F
Lazy Numbers
binary search
,
math
2900
x503
1870E
Another MEX Problem
bitmasks
,
brute force
,
dp
,
shortest paths
2300
x2461
1870D
Prefix Purchase
greedy
,
implementation
,
sortings
1800
x7229
1870C
Colorful Table
binary search
,
data structures
,
dp
,
implementation
,
math
,
two pointers
1300
x11866
1870B
Friendly Arrays
bitmasks
,
greedy
,
math
1200
x14546
1870A
MEXanized Array
constructive algorithms
,
greedy
,
math
800
x19345
1869B
2D Traveling
geometry
,
math
,
shortest paths
,
sortings
1100
x17208
1869A
Make It Zero
constructive algorithms
900
x23563
1868F
LIS?
data structures
,
greedy
,
implementation
3500
x79
1868E
Min-Sum-Max
constructive algorithms
,
dp
,
greedy
3500
x89
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