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Rayan
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Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
6 days
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Difficulty:
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combine-tags-by-or
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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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Problems
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Status
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Custom test
Problems
#
Name
558D
Guess Your Way Out! II
data structures
,
implementation
,
sortings
2300
x1151
558C
Amr and Chemistry
brute force
,
graphs
,
greedy
,
math
,
shortest paths
1900
x3996
558B
Amr and The Large Array
implementation
1300
x7873
558A
Lala Land and Apple Trees
brute force
,
implementation
,
sortings
1100
x10379
557E
Ann and Half-Palindrome
data structures
,
dp
,
graphs
,
string suffix structures
,
strings
,
trees
2300
x1091
557D
Vitaly and Cycle
combinatorics
,
dfs and similar
,
graphs
,
math
2000
x2213
557C
Arthur and Table
brute force
,
data structures
,
dp
,
greedy
,
math
,
sortings
1900
x4030
557B
Pasha and Tea
constructive algorithms
,
implementation
,
math
,
sortings
1500
x7201
557A
Ilya and Diplomas
greedy
,
implementation
,
math
1100
x8273
556B
Case of Fake Numbers
brute force
,
implementation
1100
x7944
556A
Case of the Zeros and Ones
greedy
900
x40353
555E
Case of Computer Network
dfs and similar
,
graphs
,
trees
2800
x2412
555D
Case of a Top Secret
binary search
,
implementation
,
math
2500
x874
555C
Case of Chocolate
data structures
2200
x1970
555B
Case of Fugitive
data structures
,
greedy
,
sortings
2000
x3752
555A
Case of Matryoshkas
implementation
1500
x6552
554B
Ohana Cleans Up
brute force
,
greedy
,
strings
1200
x10008
554A
Kyoya and Photobooks
brute force
,
math
,
strings
900
x13293
553E
Kyoya and Train
dp
,
fft
,
graphs
,
math
,
probabilities
3200
x557
553D
Nudist Beach
binary search
,
graphs
,
greedy
2300
x1005
553C
Love Triangles
dfs and similar
,
dsu
,
graphs
2200
x1818
553B
Kyoya and Permutation
binary search
,
combinatorics
,
constructive algorithms
,
greedy
,
implementation
,
math
1900
x2120
553A
Kyoya and Colored Balls
combinatorics
,
dp
,
math
1500
x8716
552E
Vanya and Brackets
brute force
,
dp
,
expression parsing
,
greedy
,
implementation
,
strings
2100
x1630
552D
Vanya and Triangles
brute force
,
combinatorics
,
data structures
,
geometry
,
math
,
sortings
1900
x4498
552C
Vanya and Scales
brute force
,
dp
,
greedy
,
math
,
meet-in-the-middle
,
number theory
1900
x5495
552B
Vanya and Books
implementation
,
math
1200
x15443
552A
Vanya and Table
implementation
,
math
1000
x9605
551E
GukiZ and GukiZiana
binary search
,
data structures
,
implementation
2500
x1876
551D
GukiZ and Binary Operations
combinatorics
,
implementation
,
math
,
matrices
,
number theory
2100
x1967
551C
GukiZ hates Boxes
binary search
,
greedy
2200
x3599
551B
ZgukistringZ
brute force
,
constructive algorithms
,
implementation
,
strings
1800
x3861
551A
GukiZ and Contest
brute force
,
implementation
,
sortings
800
x16427
550E
Brackets in Implications
constructive algorithms
,
greedy
,
implementation
,
math
2200
x1397
550D
Regular Bridge
constructive algorithms
,
graphs
,
implementation
1900
x3486
550C
Divisibility by Eight
brute force
,
dp
,
math
1500
x28906
550B
Preparing Olympiad
bitmasks
,
brute force
1400
x21640
550A
Two Substrings
brute force
,
dp
,
greedy
,
implementation
,
strings
1500
x38321
549H
Degenerate Matrix
binary search
,
math
2100
x1996
549G
Happy Line
constructive algorithms
,
greedy
,
sortings
2200
x2455
549F
Yura and Developers
data structures
,
divide and conquer
2800
x895
549E
Sasha Circle
geometry
,
math
2700
x156
549D
Haar Features
greedy
,
implementation
1900
x2142
549C
The Game Of Parity
games
2200
x1743
549B
Looksery Party
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
2300
x1503
549A
Face Detection
implementation
,
strings
900
x9489
548B
Mike and Fun
brute force
,
dp
,
greedy
,
implementation
1400
x8469
548A
Mike and Fax
brute force
,
implementation
,
strings
1100
x10010
547E
Mike and Friends
data structures
,
string suffix structures
,
strings
,
trees
2800
x2116
547D
Mike and Fish
constructive algorithms
,
dfs and similar
,
graphs
2600
x2634
547C
Mike and Foam
bitmasks
,
combinatorics
,
dp
,
math
,
number theory
2300
x2904
547B
Mike and Feet
binary search
,
data structures
,
dp
,
dsu
1900
x8843
547A
Mike and Frog
brute force
,
greedy
,
implementation
,
math
2200
x2596
546E
Soldier and Traveling
flows
,
graphs
,
math
2100
x3691
546D
Soldier and Number Game
constructive algorithms
,
dp
,
math
,
number theory
1700
x11983
546C
Soldier and Cards
brute force
,
dfs and similar
,
games
1400
x17707
546B
Soldier and Badges
brute force
,
greedy
,
implementation
,
sortings
1200
x17656
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x185969
545E
Paths and Trees
graphs
,
greedy
,
shortest paths
2000
x4710
545D
Queue
greedy
,
implementation
,
sortings
1300
x25341
545C
Woodcutters
dp
,
greedy
1500
x28313
545B
Equidistant String
greedy
1100
x11679
545A
Toy Cars
implementation
900
x11641
544B
Sea and Islands
constructive algorithms
,
implementation
1400
x8038
544A
Set of Strings
implementation
,
strings
1100
x8282
543E
Listening to Music
constructive algorithms
,
data structures
3200
x300
543D
Road Improvement
dp
,
trees
2300
x2760
543C
Remembering Strings
bitmasks
,
dp
2500
x1405
543B
Destroying Roads
constructive algorithms
,
graphs
,
shortest paths
2100
x4141
543A
Writing Code
dp
1800
x8013
542F
Quest
dp
,
greedy
2100
x927
542E
Playing on Graph
graphs
,
shortest paths
2600
x865
542D
Superhero's Job
dfs and similar
,
dp
,
hashing
,
math
,
number theory
2600
x514
542C
Idempotent functions
constructive algorithms
,
graphs
,
math
2000
x1135
542B
Duck Hunt
data structures
3100
x205
542A
Place Your Ad Here
data structures
,
sortings
2400
x575
540E
Infinite Inversions
binary search
,
data structures
,
implementation
,
sortings
,
trees
2100
x2139
540D
Bad Luck Island
dp
,
probabilities
1900
x5532
540C
Ice Cave
dfs and similar
2000
x7355
540B
School Marks
greedy
,
implementation
1700
x4711
540A
Combination Lock
implementation
800
x32839
538H
Summer Dichotomy
2-sat
,
data structures
,
dfs and similar
,
greedy
3200
x662
538G
Berserk Robot
constructive algorithms
,
math
,
sortings
3100
x470
538F
A Heap of Heaps
brute force
,
data structures
,
math
,
sortings
2200
x1739
538E
Demiurges Play Again
dfs and similar
,
dp
,
math
,
trees
2200
x1548
538D
Weird Chess
brute force
,
constructive algorithms
,
implementation
1800
x2431
538C
Tourist's Notes
binary search
,
brute force
,
greedy
,
implementation
,
math
1600
x5830
538B
Quasi Binary
constructive algorithms
,
dp
,
greedy
,
implementation
1400
x18155
538A
Cutting Banner
brute force
,
implementation
1400
x7145
536E
Tavas on the Path
data structures
,
divide and conquer
,
trees
3100
x399
536D
Tavas in Kansas
dp
,
games
2900
x734
535E
Tavas and Pashmaks
geometry
,
math
2600
x806
535D
Tavas and Malekas
greedy
,
hashing
,
string suffix structures
,
strings
1900
x3961
535C
Tavas and Karafs
binary search
,
greedy
,
math
1900
x3801
535B
Tavas and SaDDas
bitmasks
,
brute force
,
combinatorics
,
implementation
1100
x22654
535A
Tavas and Nafas
brute force
,
implementation
1000
x12231
534F
Simplified Nonogram
bitmasks
,
dp
,
hashing
,
meet-in-the-middle
2400
x473
534E
Berland Local Positioning System
constructive algorithms
,
greedy
,
hashing
,
implementation
2400
x351
534D
Handshakes
binary search
,
constructive algorithms
,
data structures
,
greedy
1900
x2419
534C
Polycarpus' Dice
math
1600
x5037
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