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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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Problems
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Status
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Custom test
Problems
#
Name
932C
Permutation Cycle
brute force
,
constructive algorithms
1600
x4038
931C
Laboratory Work
implementation
,
math
1700
x3364
930B
Game with String
implementation
,
probabilities
,
strings
1600
x2683
930A
Peculiar apple-tree
dfs and similar
,
graphs
,
trees
1500
x7222
929C
Красивая команда
*special problem
,
combinatorics
,
math
1700
x1162
929A
Прокат велосипедов
*special problem
,
greedy
,
implementation
1400
x2500
928B
Chat
*special problem
,
dp
1400
x2541
926I
A Vital Problem
1700
x666
926G
Large Bouquets
1500
x1482
926D
Choose Place
1600
x934
926C
Is This a Zebra?
implementation
1700
x1887
926B
Add Points
math
,
number theory
1800
x1715
925B
Resource Distribution
binary search
,
implementation
,
sortings
1700
x2208
925A
Stairs and Elevators
binary search
1600
x3485
924C
Riverside Curio
data structures
,
dp
,
greedy
1700
x3878
924B
Three-level Laser
binary search
,
greedy
,
two pointers
1600
x5316
923C
Perfect Security
data structures
,
greedy
,
strings
,
trees
1800
x4308
923B
Producing Snow
binary search
,
data structures
1600
x7355
923A
Primal Sport
math
,
number theory
1700
x5039
922D
Robot Vacuum Cleaner
greedy
,
sortings
1800
x4399
922C
Cave Painting
brute force
,
number theory
1600
x7146
920C
Swap Adjacent Elements
dfs and similar
,
greedy
,
math
,
sortings
,
two pointers
1400
x9247
919D
Substring
dfs and similar
,
dp
,
graphs
1700
x10229
917B
MADMAX
dfs and similar
,
dp
,
games
,
graphs
1700
x3543
917A
The Monster
dp
,
greedy
,
implementation
,
math
1800
x3528
916C
Jamie and Interesting Graph
constructive algorithms
,
graphs
,
shortest paths
1600
x5127
915C
Permute Digits
dp
,
greedy
1700
x7095
914C
Travelling Salesman and Special Numbers
brute force
,
combinatorics
,
dp
1800
x3847
913D
Too Easy Problems
binary search
,
brute force
,
data structures
,
greedy
,
sortings
1800
x4753
913C
Party Lemonade
bitmasks
,
dp
,
greedy
1600
x7948
911D
Inversion Counting
brute force
,
math
1800
x4617
911C
Three Garlands
brute force
,
constructive algorithms
1400
x7054
910C
Minimum Sum
constructive algorithms
,
greedy
,
math
1700
x1815
910B
Door Frames
greedy
,
implementation
1600
x1710
909C
Python Indentation
dp
1800
x4957
908C
New Year and Curling
brute force
,
geometry
,
implementation
,
math
1500
x6935
907B
Tic-Tac-Toe
implementation
1400
x4070
906A
Shockers
implementation
,
strings
1600
x4143
901A
Hashing Trees
constructive algorithms
,
trees
1500
x5130
900C
Remove Extra One
brute force
,
data structures
,
math
1700
x4584
899D
Shovel Sale
constructive algorithms
,
math
1800
x2770
898E
Squares and not squares
constructive algorithms
,
greedy
1600
x4604
898D
Alarm Clock
greedy
1600
x3974
898C
Phone Numbers
implementation
,
strings
1400
x5309
896A
Nephren gives a riddle
binary search
,
dfs and similar
1700
x3470
895B
XK Segments
binary search
,
math
,
sortings
,
two pointers
1700
x3560
894B
Ralph And His Magic Field
combinatorics
,
constructive algorithms
,
math
,
number theory
1800
x4483
891A
Pride
brute force
,
dp
,
greedy
,
math
,
number theory
1500
x10313
888E
Maximum Subsequence
bitmasks
,
divide and conquer
,
meet-in-the-middle
1800
x7374
888D
Almost Identity Permutations
combinatorics
,
dp
,
math
1600
x8498
888C
K-Dominant Character
binary search
,
implementation
,
two pointers
1400
x8269
887C
Solution for Cube
brute force
,
implementation
1500
x2900
884C
Bertown Subway
dfs and similar
,
greedy
,
math
1500
x4748
883K
Road Widening
constructive algorithms
,
greedy
,
implementation
1800
x1103
883H
Palindromic Cut
brute force
,
implementation
,
strings
1800
x1621
883E
Field of Wonders
implementation
,
strings
1500
x1913
878A
Short Program
bitmasks
,
constructive algorithms
1600
x5545
877C
Slava and tanks
constructive algorithms
1600
x5733
877B
Nikita and string
brute force
,
dp
1500
x10548
875B
Sorting the Coins
dsu
,
implementation
,
sortings
,
two pointers
1500
x5213
873D
Merge Sort
constructive algorithms
,
divide and conquer
1800
x3196
873C
Strange Game On Matrix
greedy
,
two pointers
1600
x3315
873B
Balanced Substring
dp
,
implementation
1500
x7858
869C
The Intriguing Obsession
combinatorics
,
dp
,
math
1800
x4731
868C
Qualification Rounds
bitmasks
,
brute force
,
constructive algorithms
,
dp
1500
x4637
868B
Race Against Time
implementation
1400
x3686
865A
Save the problem!
constructive algorithms
1400
x4333
864D
Make a Permutation!
greedy
,
implementation
,
math
1500
x6013
864C
Bus
greedy
,
implementation
,
math
1500
x5866
863D
Yet Another Array Queries Problem
data structures
,
implementation
1800
x3302
863C
1-2-3
graphs
,
implementation
1800
x2521
863B
Kayaking
brute force
,
greedy
,
sortings
1500
x8442
859C
Pie Rules
dp
,
games
1500
x5438
858D
Polycarp's phone book
data structures
,
implementation
,
sortings
1600
x3855
858C
Did you mean...
dp
,
greedy
,
implementation
1500
x5636
858B
Which floor?
brute force
,
implementation
1500
x3754
856A
Set Theory
brute force
,
constructive algorithms
1600
x1444
855B
Marvolo Gaunt's Ring
brute force
,
data structures
,
dp
1500
x8747
853B
Jury Meeting
greedy
,
sortings
,
two pointers
1800
x2535
853A
Planning
greedy
1500
x5868
852G
Bathroom terminal
implementation
1700
x1291
851B
Arpa and an exam about geometry
geometry
,
math
1400
x5563
850A
Five Dimensional Points
brute force
,
geometry
,
math
1700
x3213
849B
Tell Your World
brute force
,
geometry
1600
x3667
848A
From Y to Y
constructive algorithms
1600
x5133
847K
Travel Cards
greedy
,
implementation
,
sortings
1800
x1696
847H
Load Testing
greedy
1600
x2451
847E
Packmen
binary search
,
dp
1800
x3087
847C
Sum of Nestings
constructive algorithms
1800
x2381
847B
Preparing for Merge Sort
binary search
,
data structures
1600
x5059
847A
Union of Doubly Linked Lists
implementation
1500
x3388
846F
Random Query
data structures
,
math
,
probabilities
,
two pointers
1800
x2284
846C
Four Segments
brute force
,
data structures
,
dp
1800
x2691
846B
Math Show
brute force
,
greedy
1800
x2524
846A
Curriculum Vitae
brute force
,
implementation
1500
x4267
845D
Driving Test
data structures
,
dp
,
greedy
1800
x2394
845C
Two TVs
data structures
,
greedy
,
sortings
1500
x8810
845B
Luba And The Ticket
brute force
,
greedy
,
implementation
1600
x5048
843A
Sorting by Subsequences
dfs and similar
,
dsu
,
implementation
,
math
,
sortings
1400
x5683
839C
Journey
dfs and similar
,
dp
,
graphs
,
probabilities
,
trees
1500
x17048
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