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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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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
55A
Flea travel
implementation
,
math
1200
x3473
54E
Vacuum Сleaner
geometry
2700
x194
54D
Writing a Song
brute force
,
dp
,
strings
2100
x547
54C
First Digit Law
dp
,
math
,
probabilities
2000
x1327
54B
Cutting Jigsaw Puzzle
hashing
,
implementation
1800
x776
54A
Presents
implementation
1300
x2083
53E
Dead Ends
bitmasks
,
dp
2500
x1007
53D
Physical Education
sortings
1500
x2046
53C
Little Frog
constructive algorithms
1200
x6515
53B
Blog Photo
binary search
,
implementation
1700
x1417
53A
Autocomplete
implementation
1100
x5116
52C
Circular RMQ
data structures
2200
x9064
52B
Right Triangles
combinatorics
1600
x2073
52A
123-sequence
implementation
900
x8834
51F
Caterpillar
dfs and similar
,
dp
,
graphs
,
trees
2800
x642
51E
Pentagon
combinatorics
,
graphs
,
matrices
2400
x410
51D
Geometrical problem
implementation
2200
x482
51C
Three Base Stations
binary search
,
greedy
1800
x2020
51B
bHTML Tables Analisys
expression parsing
1700
x875
51A
Cheaterius's Problem
implementation
1300
x1836
50E
Square Equation Roots
math
2300
x364
50D
Bombing
binary search
,
dp
,
probabilities
2100
x635
50C
Happy Farm 5
geometry
2000
x771
50B
Choosing Symbol Pairs
strings
1500
x5724
50A
Domino piling
greedy
,
math
800
x251600
49E
Common ancestor
dp
2300
x678
49D
Game
brute force
,
dp
,
implementation
1800
x1919
49C
Disposition
constructive algorithms
,
math
1700
x1697
49B
Sum
math
1500
x2497
49A
Sleuth
implementation
800
x13509
48H
Black and White
constructive algorithms
2800
x152
48G
Galaxy Union
dp
,
trees
,
two pointers
2700
x277
48F
Snow sellers
greedy
,
sortings
2800
x160
48E
Ivan the Fool VS Gorynych the Dragon
dp
,
games
,
graphs
2100
x588
48D
Permutations
greedy
1500
x2534
48C
The Race
math
1800
x786
48B
Land Lot
brute force
,
implementation
1200
x2700
48A
Rock-paper-scissors
implementation
,
schedules
900
x6263
47E
Cannon
data structures
,
geometry
,
sortings
2200
x370
47D
Safe
brute force
2200
x781
47C
Crossword
implementation
2000
x790
47B
Coins
implementation
1200
x14133
47A
Triangular numbers
brute force
,
math
800
x15220
46G
Emperor's Problem
geometry
2500
x117
46F
Hercule Poirot Problem
dsu
,
graphs
2300
x330
46E
Comb
data structures
,
dp
1900
x965
46D
Parking Lot
data structures
,
implementation
1800
x986
46C
Hamsters and Tigers
two pointers
1600
x2457
46B
T-shirts from Sponsor
implementation
1100
x3709
46A
Ball Game
brute force
,
implementation
800
x8800
45J
Planting Trees
constructive algorithms
1800
x946
45I
TCMCF+++
greedy
1400
x2494
45H
Road Problem
graphs
2100
x193
45G
Prime Problem
number theory
2200
x1052
45F
Goats and Wolves
greedy
2500
x145
45E
Director
constructive algorithms
,
greedy
2000
x551
45D
Event Dates
greedy
,
meet-in-the-middle
,
sortings
1900
x1702
45C
Dancing Lessons
data structures
1900
x920
45B
School
dp
,
dsu
2200
x282
45A
Codecraft III
implementation
900
x6801
44J
Triminoes
constructive algorithms
,
greedy
2000
x576
44I
Toys
brute force
,
combinatorics
2300
x195
44H
Phone Number
dp
1700
x1751
44G
Shooting Gallery
data structures
,
implementation
2500
x409
44F
BerPaint
geometry
,
graphs
2700
x68
44E
Anfisa the Monkey
dp
1400
x5203
44D
Hyperdrive
math
1800
x716
44C
Holidays
implementation
1300
x3493
44B
Cola
implementation
1500
x2014
44A
Indian Summer
implementation
900
x11455
43E
Race
brute force
,
implementation
,
two pointers
2300
x396
43D
Journey
brute force
,
constructive algorithms
,
implementation
2000
x1091
43C
Lucky Tickets
greedy
1300
x4290
43B
Letter
implementation
,
strings
1100
x17061
43A
Football
strings
1000
x57262
42E
Baldman and the military
dfs and similar
,
graphs
,
trees
2700
x206
42D
Strange town
constructive algorithms
,
math
2300
x412
42C
Safe cracking
brute force
,
constructive algorithms
2200
x488
42B
Game of chess unfinished
implementation
1700
x957
42A
Guilty --- to the kitchen!
greedy
,
implementation
1400
x2860
41E
3-cycles
constructive algorithms
,
graphs
,
greedy
1900
x1978
41D
Pawn
dp
1900
x2445
41C
Email address
expression parsing
,
implementation
1300
x3773
41B
Martian Dollar
brute force
1400
x4058
41A
Translation
implementation
,
strings
800
x149043
40E
Number Table
combinatorics
2500
x685
40D
Interesting Sequence
math
2600
x142
40C
Berland Square
implementation
,
math
2300
x253
40B
Repaintings
math
1600
x1173
40A
Find Color
constructive algorithms
,
geometry
,
implementation
,
math
1300
x4061
39K
Testing
2600
x86
39J
Spelling Check
hashing
,
implementation
,
strings
1500
x3006
39I
Tram
2500
x143
39H
Multiplication Table
implementation
1300
x2777
39G
Inverse Function
implementation
2400
x130
39F
Pacifist frogs
implementation
1300
x1577
39E
What Has Dirichlet Got to Do with That?
dp
,
games
2000
x884
39D
Cubical Planet
math
1100
x4011
39C
Moon Craters
dp
,
sortings
2100
x605
39B
Company Income Growth
greedy
1300
x2686
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