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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
3300
x5
2041M
Selection Sort
greedy
2000
x370
2041L
Building Castle
2900
x11
2041K
Trophic Balance Species
3100
x12
2041J
Bottle Arrangement
dsu
,
greedy
2700
x45
2041I
Auto Complete
data structures
,
implementation
,
sortings
,
strings
,
trees
2300
x210
2041H
Sheet Music
combinatorics
,
dp
,
math
2300
x238
2041G
Grid Game
3100
x13
2041F
Segmentation Folds
brute force
,
dfs and similar
,
number theory
2400
x144
2041E
Beautiful Array
constructive algorithms
1200
x1384
2041D
Drunken Maze
dfs and similar
,
graphs
,
shortest paths
1700
x702
2041C
Cube
bitmasks
,
dp
2000
x543
2041B
Bowling Frame
binary search
,
math
1200
x1435
2041A
The Bento Box Adventure
implementation
1300
x2512
2039H2
Cool Swap Walk (Hard Version)
constructive algorithms
,
constructive algorithms
,
constructive algorithms
,
implementation
,
implementation
,
sortings
,
sortings
3500
x17
2039H1
Cool Swap Walk (Easy Version)
constructive algorithms
,
implementation
,
sortings
3500
x30
2039G
Shohag Loves Pebae
math
,
number theory
3500
x15
2039F2
Shohag Loves Counting (Hard Version)
dp
,
number theory
3200
x85
2039F1
Shohag Loves Counting (Easy Version)
combinatorics
,
dp
,
math
,
number theory
2800
x202
2039E
Shohag Loves Inversions
combinatorics
,
dp
,
implementation
,
math
2200
x1323
2039D
Shohag Loves GCD
constructive algorithms
,
greedy
,
math
,
number theory
1700
x3320
2039C2
Shohag Loves XOR (Hard Version)
bitmasks
,
brute force
,
math
,
number theory
1800
x2725
2039C1
Shohag Loves XOR (Easy Version)
bitmasks
,
brute force
,
math
,
number theory
1200
x6820
2039B
Shohag Loves Strings
constructive algorithms
,
greedy
,
implementation
,
strings
1000
x8540
2039A
Shohag Loves Mod
constructive algorithms
,
number theory
800
x10701
2038N
Fixing the Expression
implementation
800
x6186
2038M
Royal Flush
dp
,
implementation
2800
x177
2038L
Bridge Renovation
brute force
,
dp
,
greedy
,
math
,
two pointers
1400
x3165
2038K
Grid Walk
brute force
,
dp
,
greedy
,
math
,
number theory
2100
x916
2038J
Waiting for...
greedy
,
implementation
800
x4670
2038I
Polyathlon
binary search
,
data structures
,
hashing
,
string suffix structures
,
strings
2500
x403
2038H
Galactic Council
flows
3000
x86
2038G
Guess One Character
constructive algorithms
,
implementation
,
interactive
1900
x1609
2038F
Alternative Platforms
combinatorics
,
data structures
,
fft
,
math
,
sortings
2500
x307
2038E
Barrels
data structures
,
greedy
,
math
2900
x89
2038D
Divide OR Conquer
bitmasks
,
data structures
,
dp
,
implementation
2400
x450
2038C
DIY
data structures
,
geometry
,
greedy
,
sortings
1400
x2849
2038B
Make It Equal
binary search
,
brute force
,
greedy
,
math
2100
x1048
2038A
Bonus Project
games
,
greedy
1400
x2455
2037G
Natlan Exploring
bitmasks
,
combinatorics
,
data structures
,
dp
,
math
,
number theory
2000
x1966
2037F
Ardent Flames
binary search
,
data structures
,
math
,
sortings
,
two pointers
2100
x1555
2037E
Kachina's Favorite Binary String
dp
,
greedy
,
interactive
,
two pointers
1600
x4235
2037D
Sharky Surfing
data structures
,
greedy
,
two pointers
1300
x8467
2037C
Superultra's Favorite Permutation
constructive algorithms
,
greedy
,
math
,
number theory
1000
x15137
2037B
Intercepted Inputs
brute force
,
implementation
800
x17512
2037A
Twice
implementation
800
x22653
2036G
Library of Magic
binary search
,
constructive algorithms
,
divide and conquer
,
interactive
,
math
,
number theory
2200
x1073
2036F
XORificator 3000
bitmasks
,
dp
,
number theory
,
two pointers
1900
x3321
2036E
Reverse the Rivers
binary search
,
constructive algorithms
,
data structures
,
greedy
1600
x6434
2036D
I Love 1543
brute force
,
implementation
,
matrices
1300
x11469
2036C
Anya and 1100
brute force
,
implementation
1100
x16294
2036B
Startup
greedy
,
sortings
800
x22876
2036A
Quintomania
implementation
800
x30350
2035H
Peak Productivity Forces
constructive algorithms
3500
x57
2035G2
Go Learn! (Hard Version)
divide and conquer
,
dp
3500
x75
2035G1
Go Learn! (Easy Version)
dp
,
trees
3300
x131
2035F
Tree Operations
binary search
,
brute force
,
dfs and similar
,
dp
,
trees
2500
x780
2035E
Monster
binary search
,
brute force
,
constructive algorithms
,
greedy
,
implementation
,
math
,
ternary search
2300
x1514
2035D
Yet Another Real Number Problem
binary search
,
data structures
,
divide and conquer
,
greedy
,
implementation
,
math
1800
x4427
2035C
Alya and Permutation
bitmasks
,
constructive algorithms
,
math
1400
x7960
2035B
Everyone Loves Tres
constructive algorithms
,
greedy
,
math
,
number theory
900
x14633
2035A
Sliding
implementation
,
math
800
x14807
2033G
Sakurako and Chefir
data structures
,
dfs and similar
,
dp
,
greedy
,
trees
2200
x1272
2033F
Kosuke's Sloth
brute force
,
math
,
number theory
1800
x5223
2033E
Sakurako, Kosuke, and the Permutation
brute force
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
math
1400
x9856
2033D
Kousuke's Assignment
data structures
,
dp
,
dsu
,
greedy
,
math
1300
x12982
2033C
Sakurako's Field Trip
dp
,
greedy
,
two pointers
1400
x12586
2033B
Sakurako and Water
brute force
,
constructive algorithms
,
greedy
900
x22887
2033A
Sakurako and Kosuke
constructive algorithms
,
implementation
,
math
800
x32820
2032F
Peanuts
combinatorics
,
dp
,
games
,
math
2700
x263
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
x4533
2032C
Trinity
binary search
,
math
,
sortings
,
two pointers
1400
x11128
2032B
Medians
constructive algorithms
,
greedy
,
implementation
,
math
1100
x15502
2032A
Circuit
greedy
,
implementation
,
math
,
number theory
800
x20228
2031F
Penchick and Even Medians
binary search
,
constructive algorithms
,
interactive
,
probabilities
2800
x249
2031E
Penchick and Chloe's Trees
data structures
,
dfs and similar
,
dp
,
greedy
,
implementation
,
math
,
sortings
,
trees
2100
x1629
2031D
Penchick and Desert Rabbit
binary search
,
data structures
,
dfs and similar
,
dp
,
dsu
,
greedy
,
implementation
,
two pointers
1700
x5376
2031C
Penchick and BBQ Buns
constructive algorithms
,
math
,
number theory
1300
x9282
2031B
Penchick and Satay Sticks
brute force
,
greedy
,
sortings
900
x13459
2031A
Penchick and Modern Monument
constructive algorithms
,
dp
,
greedy
,
math
800
x14675
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
x681
2030E
MEXimize the Score
combinatorics
,
data structures
,
dp
,
greedy
,
implementation
,
math
2200
x1325
2030D
QED's Favorite Permutation
data structures
,
implementation
,
sortings
1700
x6226
2030C
A TRUE Battle
brute force
,
games
,
greedy
1100
x15726
2030B
Minimise Oneness
combinatorics
,
constructive algorithms
,
games
,
math
800
x20031
2030A
A Gift From Orangutan
constructive algorithms
,
greedy
,
math
,
sortings
800
x23382
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
x2390
2029D
Cool Graph
constructive algorithms
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
trees
1900
x2636
2029C
New Rating
binary search
,
data structures
,
dp
,
greedy
1700
x4802
2029B
Replacement
constructive algorithms
,
games
,
strings
1100
x8197
2029A
Set
greedy
,
math
800
x10915
2028F
Alice's Adventures in Addition
bitmasks
,
brute force
,
dp
,
implementation
2700
x301
2028E
Alice's Adventures in the Rabbit Hole
combinatorics
,
dfs and similar
,
dp
,
games
,
greedy
,
math
,
probabilities
,
trees
2300
x1120
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