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Rayan
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Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
5 days
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Difficulty:
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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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Custom test
Problems
#
Name
2041N
Railway Construction
x3
2041M
Selection Sort
greedy
x339
2041L
Building Castle
x9
2041K
Trophic Balance Species
x11
2041J
Bottle Arrangement
dsu
,
greedy
x41
2041I
Auto Complete
data structures
,
implementation
,
sortings
,
strings
,
trees
x200
2041H
Sheet Music
combinatorics
,
dp
x222
2041G
Grid Game
x13
2041F
Segmentation Folds
brute force
,
dfs and similar
,
number theory
x137
2041E
Beautiful Array
constructive algorithms
x1294
2041D
Drunken Maze
dfs and similar
,
graphs
,
shortest paths
x660
2041C
Cube
bitmasks
,
dp
x507
2041B
Bowling Frame
binary search
,
math
x1362
2041A
The Bento Box Adventure
implementation
x2388
2039H2
Cool Swap Walk (Hard Version)
constructive algorithms
,
constructive algorithms
,
constructive algorithms
,
implementation
,
implementation
,
sortings
,
sortings
x16
2039H1
Cool Swap Walk (Easy Version)
constructive algorithms
,
implementation
,
sortings
x26
2039G
Shohag Loves Pebae
math
,
number theory
x13
2039F2
Shohag Loves Counting (Hard Version)
dp
,
number theory
x79
2039F1
Shohag Loves Counting (Easy Version)
combinatorics
,
dp
,
math
,
number theory
x198
2039E
Shohag Loves Inversions
combinatorics
,
constructive algorithms
,
dp
,
implementation
,
math
x1287
2039D
Shohag Loves GCD
constructive algorithms
,
greedy
,
math
,
number theory
x3243
2039C2
Shohag Loves XOR (Hard Version)
bitmasks
,
brute force
,
math
,
number theory
x2659
2039C1
Shohag Loves XOR (Easy Version)
bitmasks
,
brute force
,
math
,
number theory
x6730
2039B
Shohag Loves Strings
constructive algorithms
,
greedy
,
implementation
,
strings
x8474
2039A
Shohag Loves Mod
constructive algorithms
,
number theory
x10609
2038N
Fixing the Expression
implementation
800
x6151
2038M
Royal Flush
dp
,
implementation
2800
x175
2038L
Bridge Renovation
brute force
,
dp
,
greedy
,
math
,
two pointers
1400
x3136
2038K
Grid Walk
brute force
,
dp
,
greedy
,
math
,
number theory
2100
x906
2038J
Waiting for...
greedy
,
implementation
800
x4648
2038I
Polyathlon
binary search
,
data structures
,
hashing
,
string suffix structures
,
strings
2500
x396
2038H
Galactic Council
flows
3000
x84
2038G
Guess One Character
constructive algorithms
,
implementation
,
interactive
1900
x1601
2038F
Alternative Platforms
combinatorics
,
data structures
,
fft
,
math
,
sortings
2500
x303
2038E
Barrels
data structures
,
greedy
,
math
2900
x88
2038D
Divide OR Conquer
bitmasks
,
data structures
,
dp
,
implementation
2400
x447
2038C
DIY
data structures
,
geometry
,
greedy
,
sortings
1400
x2831
2038B
Make It Equal
binary search
,
brute force
,
greedy
,
math
2100
x1041
2038A
Bonus Project
games
,
greedy
1400
x2438
2037G
Natlan Exploring
bitmasks
,
combinatorics
,
data structures
,
dp
,
math
,
number theory
2000
x1959
2037F
Ardent Flames
binary search
,
data structures
,
math
,
sortings
,
two pointers
2100
x1546
2037E
Kachina's Favorite Binary String
dp
,
greedy
,
interactive
,
two pointers
1600
x4222
2037D
Sharky Surfing
data structures
,
greedy
,
two pointers
1300
x8434
2037C
Superultra's Favorite Permutation
constructive algorithms
,
greedy
,
math
,
number theory
1000
x15081
2037B
Intercepted Inputs
brute force
,
implementation
800
x17442
2037A
Twice
implementation
800
x22563
2036G
Library of Magic
binary search
,
constructive algorithms
,
divide and conquer
,
interactive
,
math
,
number theory
2200
x1072
2036F
XORificator 3000
bitmasks
,
dp
,
number theory
,
two pointers
1900
x3301
2036E
Reverse the Rivers
binary search
,
constructive algorithms
,
data structures
,
greedy
1600
x6424
2036D
I Love 1543
brute force
,
implementation
,
matrices
1300
x11456
2036C
Anya and 1100
brute force
,
implementation
1100
x16275
2036B
Startup
greedy
,
sortings
800
x22859
2036A
Quintomania
implementation
800
x30335
2035H
Peak Productivity Forces
constructive algorithms
3500
x57
2035G2
Go Learn! (Hard Version)
divide and conquer
,
dp
3500
x74
2035G1
Go Learn! (Easy Version)
dp
,
trees
3300
x130
2035F
Tree Operations
binary search
,
brute force
,
dfs and similar
,
dp
,
trees
2500
x777
2035E
Monster
binary search
,
brute force
,
constructive algorithms
,
greedy
,
implementation
,
math
,
ternary search
2300
x1510
2035D
Yet Another Real Number Problem
binary search
,
data structures
,
divide and conquer
,
greedy
,
implementation
,
math
1800
x4421
2035C
Alya and Permutation
bitmasks
,
constructive algorithms
,
math
1400
x7957
2035B
Everyone Loves Tres
constructive algorithms
,
greedy
,
math
,
number theory
900
x14620
2035A
Sliding
implementation
,
math
800
x14801
2033G
Sakurako and Chefir
data structures
,
dfs and similar
,
dp
,
greedy
,
trees
2200
x1261
2033F
Kosuke's Sloth
brute force
,
math
,
number theory
1800
x5218
2033E
Sakurako, Kosuke, and the Permutation
brute force
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
math
1400
x9855
2033D
Kousuke's Assignment
data structures
,
dp
,
dsu
,
greedy
,
math
1300
x12976
2033C
Sakurako's Field Trip
dp
,
greedy
,
two pointers
1400
x12579
2033B
Sakurako and Water
brute force
,
constructive algorithms
,
greedy
900
x22877
2033A
Sakurako and Kosuke
constructive algorithms
,
implementation
,
math
800
x32800
2032F
Peanuts
combinatorics
,
dp
,
games
,
math
2700
x262
2032E
Balanced
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
2400
x949
2032D
Genokraken
constructive algorithms
,
data structures
,
graphs
,
greedy
,
implementation
,
interactive
,
trees
,
two pointers
1800
x4526
2032C
Trinity
binary search
,
math
,
sortings
,
two pointers
1400
x11107
2032B
Medians
constructive algorithms
,
greedy
,
implementation
,
math
1100
x15487
2032A
Circuit
greedy
,
implementation
,
math
,
number theory
800
x20215
2031F
Penchick and Even Medians
binary search
,
constructive algorithms
,
interactive
,
probabilities
2800
x247
2031E
Penchick and Chloe's Trees
data structures
,
dfs and similar
,
dp
,
greedy
,
implementation
,
math
,
sortings
,
trees
2100
x1621
2031D
Penchick and Desert Rabbit
binary search
,
data structures
,
dfs and similar
,
dp
,
dsu
,
greedy
,
implementation
,
two pointers
1700
x5349
2031C
Penchick and BBQ Buns
constructive algorithms
,
math
,
number theory
1300
x9233
2031B
Penchick and Satay Sticks
brute force
,
greedy
,
sortings
900
x13403
2031A
Penchick and Modern Monument
constructive algorithms
,
dp
,
greedy
,
math
800
x14617
2030G2
The Destruction of the Universe (Hard Version)
combinatorics
,
math
3100
x109
2030G1
The Destruction of the Universe (Easy Version)
combinatorics
,
greedy
,
math
2900
x149
2030F
Orangutan Approved Subarrays
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
two pointers
2400
x680
2030E
MEXimize the Score
combinatorics
,
data structures
,
dp
,
greedy
,
implementation
,
math
2200
x1325
2030D
QED's Favorite Permutation
data structures
,
implementation
,
sortings
1700
x6225
2030C
A TRUE Battle
brute force
,
games
,
greedy
1100
x15719
2030B
Minimise Oneness
combinatorics
,
constructive algorithms
,
games
,
math
800
x20022
2030A
A Gift From Orangutan
constructive algorithms
,
greedy
,
math
,
sortings
800
x23374
2029I
Variance Challenge
flows
,
graphs
,
greedy
3400
x27
2029H
Message Spread
bitmasks
,
brute force
,
combinatorics
,
dp
3500
x42
2029G
Balanced Problem
data structures
,
dp
3000
x125
2029F
Palindrome Everywhere
constructive algorithms
,
graphs
,
greedy
2500
x616
2029E
Common Generator
brute force
,
constructive algorithms
,
math
,
number theory
2100
x2379
2029D
Cool Graph
constructive algorithms
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
trees
1900
x2632
2029C
New Rating
binary search
,
data structures
,
dp
,
greedy
1700
x4794
2029B
Replacement
constructive algorithms
,
games
,
strings
1100
x8187
2029A
Set
greedy
,
math
800
x10905
2028F
Alice's Adventures in Addition
bitmasks
,
brute force
,
dp
,
implementation
2700
x300
2028E
Alice's Adventures in the Rabbit Hole
combinatorics
,
dfs and similar
,
dp
,
games
,
greedy
,
math
,
probabilities
,
trees
2300
x1118
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