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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
560A
Currency System in Geraldion
implementation
,
sortings
1000
x17222
558A
Lala Land and Apple Trees
brute force
,
implementation
,
sortings
1100
x10379
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
x40356
554B
Ohana Cleans Up
brute force
,
greedy
,
strings
1200
x10008
554A
Kyoya and Photobooks
brute force
,
math
,
strings
900
x13293
552B
Vanya and Books
implementation
,
math
1200
x15443
552A
Vanya and Table
implementation
,
math
1000
x9605
551A
GukiZ and Contest
brute force
,
implementation
,
sortings
800
x16428
549A
Face Detection
implementation
,
strings
900
x9489
548A
Mike and Fax
brute force
,
implementation
,
strings
1100
x10010
546B
Soldier and Badges
brute force
,
greedy
,
implementation
,
sortings
1200
x17656
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x186019
545B
Equidistant String
greedy
1100
x11679
545A
Toy Cars
implementation
900
x11641
544A
Set of Strings
implementation
,
strings
1100
x8282
540A
Combination Lock
implementation
800
x32842
535B
Tavas and SaDDas
bitmasks
,
brute force
,
combinatorics
,
implementation
1100
x22654
535A
Tavas and Nafas
brute force
,
implementation
1000
x12231
534A
Exam
constructive algorithms
,
implementation
,
math
1100
x12325
527A
Playing with Paper
implementation
,
math
1100
x14499
525A
Vitaliy and Pie
greedy
,
hashing
,
strings
1100
x14722
523A
Rotate, Flip and Zoom
*special problem
,
implementation
1200
x2638
522B
Photo to Remember
*special problem
,
data structures
,
dp
,
implementation
1100
x8944
522A
Reposts
*special problem
,
dfs and similar
,
dp
,
graphs
,
trees
1200
x16519
520A
Pangram
implementation
,
strings
800
x99440
519B
A and B and Compilation Errors
data structures
,
implementation
,
sortings
1100
x39744
519A
A and B and Chess
implementation
900
x19058
515A
Drazil and Date
math
1000
x20403
514A
Chewbaсca and Number
greedy
,
implementation
1200
x53599
513A
Game
constructive algorithms
,
math
800
x20482
510A
Fox And Snake
implementation
800
x85161
509A
Maximum in Table
brute force
,
implementation
800
x38696
508A
Pasha and Pixels
brute force
1100
x7966
507A
Amr and Music
greedy
,
implementation
,
sortings
1000
x18559
505A
Mr. Kitayuta's Gift
brute force
,
implementation
,
strings
1100
x6692
501B
Misha and Changing Handles
data structures
,
dsu
,
strings
1100
x16643
501A
Contest
implementation
900
x22880
500A
New Year Transportation
dfs and similar
,
graphs
,
implementation
1000
x53735
499B
Lecture
implementation
,
strings
1000
x39698
499A
Watching a movie
greedy
,
implementation
1000
x13985
496A
Minimum Difficulty
brute force
,
implementation
,
math
900
x16492
495A
Digital Counter
implementation
1100
x8501
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x76668
492A
Vanya and Cubes
implementation
800
x51329
491A
Up the hill
constructive algorithms
,
implementation
1000
x2957
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x60050
489B
BerSU Ball
dfs and similar
,
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
1200
x49504
489A
SwapSort
greedy
,
implementation
,
sortings
1200
x10107
488A
Giga Tower
brute force
1100
x14322
486A
Calculating Function
implementation
,
math
800
x121085
483A
Counterexample
brute force
,
implementation
,
math
,
number theory
1100
x23255
482A
Diverse Permutation
constructive algorithms
,
greedy
1200
x9666
479A
Expression
brute force
,
math
1000
x95371
478A
Initial Bet
implementation
1100
x25780
476A
Dreamoon and Stairs
implementation
,
math
1000
x44433
475A
Bayan Bus
implementation
1100
x4779
474B
Worms
binary search
,
implementation
1200
x49255
474A
Keyboard
implementation
900
x46114
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x60821
471A
MUH and Sticks
implementation
1100
x13434
469A
I Wanna Be the Guy
greedy
,
implementation
800
x99263
467B
Fedor and New Game
bitmasks
,
brute force
,
constructive algorithms
,
implementation
1100
x37947
467A
George and Accommodation
implementation
800
x124483
466A
Cheap Travel
implementation
1200
x64303
465B
Inbox (100500)
implementation
1000
x10453
465A
inc ARG
implementation
900
x10076
463B
Caisa and Pylons
brute force
,
implementation
,
math
1100
x27495
463A
Caisa and Sugar
brute force
,
implementation
1200
x9276
462A
Appleman and Easy Task
brute force
,
implementation
1000
x16961
461A
Appleman and Toastman
greedy
,
sortings
1200
x15562
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x46465
459A
Pashmak and Garden
implementation
1200
x33150
456B
Fedya and Maths
math
,
number theory
1200
x16858
456A
Laptops
sortings
1100
x48768
454B
Little Pony and Sort by Shift
implementation
1200
x18249
454A
Little Pony and Crystal Mine
implementation
800
x14900
452A
Eevee
brute force
,
implementation
,
strings
1000
x8031
451A
Game With Sticks
implementation
900
x66380
450A
Jzzhu and Children
implementation
1000
x35109
448A
Rewards
implementation
800
x24535
447B
DZY Loves Strings
greedy
,
implementation
1000
x20335
447A
DZY Loves Hash
implementation
800
x9621
445A
DZY Loves Chessboard
dfs and similar
,
implementation
1200
x29974
443A
Anton and Letters
constructive algorithms
,
implementation
800
x91068
441A
Valera and Antique Items
implementation
1000
x18546
440A
Forgotten Episode
implementation
800
x7527
439B
Devu, the Dumb Guy
implementation
,
sortings
1200
x14396
439A
Devu, the Singer and Churu, the Joker
greedy
,
implementation
900
x25399
435A
Queue on Bus Stop
implementation
1000
x10194
433B
Kuriyama Mirai's Stones
dp
,
implementation
,
sortings
1200
x40425
433A
Kitahara Haruki's Gift
brute force
,
implementation
1100
x16468
432B
Football Kit
brute force
,
greedy
,
implementation
1200
x11725
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x60698
431B
Shower Line
brute force
,
implementation
1200
x10865
431A
Black Square
implementation
800
x55685
427B
Prison Transfer
data structures
,
implementation
1100
x14119
427A
Police Recruits
implementation
800
x79458
426A
Sereja and Mugs
implementation
800
x9255
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