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Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
5 days
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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
680B
Bear and Finding Criminals
constructive algorithms
,
implementation
1000
x24493
680A
Bear and Five Cards
constructive algorithms
,
implementation
800
x12552
678A
Johny Likes Numbers
implementation
,
math
800
x13373
677A
Vanya and Fence
implementation
800
x144057
676A
Nicholas and Permutation
constructive algorithms
,
implementation
800
x13857
675A
Infinite Sequence
math
1100
x14998
673A
Bear and Game
implementation
800
x10091
672B
Different is Good
constructive algorithms
,
implementation
,
strings
1000
x17447
672A
Summer Camp
implementation
800
x15379
670B
Game of Robots
implementation
1000
x11295
670A
Holidays
brute force
,
constructive algorithms
,
greedy
,
math
900
x17088
669A
Little Artem and Presents
math
800
x10860
667B
Coat of Anticubism
constructive algorithms
,
geometry
1100
x5639
667A
Pouring Rain
geometry
,
math
1100
x8055
664A
Complicated GCD
math
,
number theory
800
x18411
660B
Seating On Bus
implementation
1000
x5383
660A
Co-prime Array
greedy
,
implementation
,
math
,
number theory
1200
x9052
659C
Tanya and Toys
greedy
,
implementation
1200
x11507
659A
Round House
implementation
,
math
1000
x15886
658A
Bear and Reverse Radewoosh
implementation
800
x7101
653A
Bear and Three Balls
brute force
,
implementation
,
sortings
900
x8252
652B
z-sort
sortings
1000
x10350
651B
Beautiful Paintings
greedy
,
sortings
1200
x11606
651A
Joysticks
dp
,
greedy
,
implementation
,
math
1100
x23054
649A
Любимые числа Поликарпа
constructive algorithms
,
implementation
1000
x1303
648C
Путь Робота
constructive algorithms
,
dfs and similar
,
graphs
1100
x999
648B
Собери стол
constructive algorithms
,
sortings
800
x1548
648A
Наибольший подъем
constructive algorithms
,
implementation
900
x715
645B
Mischievous Mess Makers
greedy
,
math
1200
x3412
645A
Amity Assessment
brute force
,
constructive algorithms
,
implementation
1200
x3466
644A
Parliament of Berland
*special problem
,
constructive algorithms
1000
x4460
641A
Little Artem and Grasshopper
implementation
1000
x5951
639A
Bear and Displayed Friends
implementation
1200
x6162
638A
Home Numbers
*special problem
,
constructive algorithms
,
math
1100
x4050
637B
Chat Order
*special problem
,
binary search
,
constructive algorithms
,
data structures
,
sortings
1200
x17099
637A
Voting for Photos
*special problem
,
constructive algorithms
,
implementation
1000
x5419
635A
Orchestra
brute force
,
implementation
1100
x2924
633A
Ebony and Ivory
brute force
,
math
,
number theory
1100
x12870
632A
Grandma Laura and Apples
1200
x4610
631B
Print Check
constructive algorithms
,
implementation
1200
x7445
631A
Interview
brute force
,
implementation
900
x9341
630R
Game
games
,
math
1200
x8727
630J
Divisibility
math
,
number theory
1100
x11198
630D
Hexagons!
math
1100
x11103
630C
Lucky Numbers
combinatorics
,
math
1100
x22333
630B
Moore's Law
math
1200
x7464
630A
Again Twenty Five!
number theory
800
x70013
629B
Far Relative’s Problem
brute force
1100
x8057
629A
Far Relative’s Birthday Cake
brute force
,
combinatorics
,
constructive algorithms
,
implementation
800
x13479
628A
Tennis Tournament
implementation
,
math
1000
x6416
626A
Robot Sequence
brute force
,
implementation
1000
x6269
625B
War of the Corporations
constructive algorithms
,
greedy
,
strings
1200
x10466
624B
Making a String
greedy
,
sortings
1100
x8000
624A
Save Luke
math
800
x10383
622B
The Time
implementation
900
x9681
622A
Infinite Sequence
implementation
,
math
1000
x9420
621A
Wet Shark and Odd and Even
implementation
900
x20725
620B
Grandfather Dovlet’s calculator
implementation
1000
x9652
620A
Professor GukiZ's Robot
implementation
,
math
800
x13294
618B
Guess the Permutation
constructive algorithms
1100
x8000
618A
Slime Combining
implementation
800
x8365
617A
Elephant
math
800
x190184
616B
Dinner with Emma
games
,
greedy
1000
x11995
616A
Comparing Two Long Integers
implementation
,
strings
900
x9960
615A
Bulbs
implementation
800
x17509
612B
HDD is Outdated Technology
implementation
,
math
1200
x7126
611A
New Year and Days
implementation
900
x11667
610A
Pasha and Stick
combinatorics
,
math
1000
x23513
609B
The Best Gift
constructive algorithms
,
implementation
1100
x9187
609A
USB Flash Drives
greedy
,
implementation
,
sortings
800
x17456
608A
Saitama Destroys Hotel
implementation
,
math
1000
x9375
606A
Magic Spheres
implementation
1200
x7999
604A
Uncowed Forces
implementation
1000
x9001
602A
Two Bases
brute force
,
implementation
1100
x8522
599A
Patrick and Shopping
implementation
800
x29242
598A
Tricky Sum
math
900
x26885
596B
Wilbur and Array
greedy
,
implementation
1100
x10378
596A
Wilbur and Swimming Pool
geometry
,
implementation
1100
x7763
595A
Vitaly and Night
constructive algorithms
,
implementation
800
x14564
593A
2Char
brute force
,
implementation
1200
x5809
592B
The Monster and the Squirrel
math
1100
x8639
592A
PawnChess
implementation
1200
x6361
591B
Rebranding
implementation
,
strings
1200
x8255
591A
Wizards' Duel
implementation
,
math
900
x14592
588A
Duff and Meat
greedy
900
x22995
586A
Alena's Schedule
implementation
900
x10153
584A
Olesya and Rodion
math
1000
x45692
583B
Robot's Task
greedy
,
implementation
1200
x8735
583A
Asphalting Roads
implementation
1000
x11461
581B
Luxurious Houses
implementation
,
math
1100
x13096
581A
Vasya the Hipster
implementation
,
math
800
x72082
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x89367
579A
Raising Bacteria
bitmasks
1000
x62162
577A
Multiplication Table
implementation
,
number theory
1000
x40216
574A
Bear and Elections
greedy
,
implementation
1200
x9099
572A
Arrays
sortings
900
x16664
570A
Elections
implementation
1100
x13914
569B
Inventory
greedy
,
math
1200
x7112
567A
Lineland Mail
greedy
,
implementation
900
x32543
560B
Gerald is into Art
constructive algorithms
,
implementation
1200
x7945
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