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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
1106A
Lunar New Year and Cross Counting
implementation
800
x12373
1105B
Zuhair and Strings
brute force
,
implementation
,
strings
1100
x9929
1105A
Salem and Sticks
brute force
,
implementation
1100
x10998
1104B
Game with string
data structures
,
implementation
,
math
1200
x15034
1104A
Splitting into digits
constructive algorithms
,
implementation
,
math
800
x15445
1102C
Doors Breaking and Repairing
games
1200
x13152
1102A
Integer Sequence Dividing
math
800
x24540
1101A
Minimum Integer
math
1000
x17507
1100C
NN and the Optical Illusion
binary search
,
geometry
,
math
1200
x10140
1100A
Roman and Browser
implementation
1000
x10181
1099C
Postcard
constructive algorithms
,
implementation
1200
x9673
1099B
Squares and Segments
binary search
,
constructive algorithms
,
math
1100
x11174
1099A
Snowball
implementation
800
x12939
1097B
Petr and a Combination Lock
bitmasks
,
brute force
,
dp
1200
x29235
1097A
Gennady and a Card Game
brute force
,
implementation
800
x39175
1096A
Find Divisible
greedy
,
implementation
,
math
800
x18822
1095B
Array Stabilization
implementation
900
x22222
1095A
Repeating Cipher
implementation
800
x31982
1093B
Letters Rearranging
constructive algorithms
,
greedy
,
sortings
,
strings
900
x16617
1093A
Dice Rolling
math
800
x17750
1092B
Teams Forming
sortings
800
x26624
1092A
Uniform String
implementation
800
x16342
1091B
New Year and the Treasure Geolocation
brute force
,
constructive algorithms
,
greedy
,
implementation
1200
x10693
1091A
New Year and the Christmas Ornament
brute force
,
implementation
,
math
800
x17649
1090M
The Pleasant Walk
implementation
1000
x6364
1089L
Lazyland
900
x4026
1088B
Ehab and subtraction
implementation
,
sortings
1000
x12667
1088A
Ehab and another construction problem
brute force
,
constructive algorithms
800
x16903
1085B
Div Times Mod
math
1100
x9349
1085A
Right-Left Cipher
implementation
,
strings
800
x12200
1084B
Kvass and the Fair Nut
greedy
,
implementation
1200
x7835
1084A
The Fair Nut and Elevator
brute force
,
implementation
1000
x7939
1082A
Vasya and Book
implementation
,
math
1200
x8624
1081A
Definite Game
constructive algorithms
,
math
800
x12129
1080B
Margarite and the best present
math
900
x11848
1080A
Petya and Origami
math
800
x18233
1077B
Disturbed People
greedy
1000
x19099
1077A
Frog Jumping
math
800
x30154
1076B
Divisor Subtraction
implementation
,
math
,
number theory
1200
x13125
1076A
Minimizing the String
greedy
,
strings
1200
x13182
1075B
Taxi drivers and Lyft
implementation
,
sortings
1200
x4263
1075A
The King's Race
implementation
,
math
800
x8566
1073B
Vasya and Books
implementation
,
math
1000
x10601
1073A
Diverse Substring
implementation
,
strings
1000
x15626
1070K
Video Posts
implementation
1100
x4955
1068B
LCM
math
,
number theory
1200
x11697
1066A
Vova and Train
math
1100
x14611
1065A
Vasya and Chocolate
implementation
,
math
800
x14695
1064B
Equations of Mathematical Magic
math
1200
x7559
1064A
Make a triangle!
brute force
,
geometry
,
math
800
x22648
1061A
Coins
greedy
,
implementation
,
math
800
x22099
1060B
Maximum Sum of Digits
greedy
1100
x8984
1060A
Phone Numbers
brute force
800
x14276
1059A
Cashier
implementation
1000
x12900
1057A
Bmail Computer Network
*special problem
,
dfs and similar
,
trees
900
x6190
1056A
Determine Line
implementation
800
x6743
1055A
Metro
graphs
900
x10788
1054B
Appending Mex
implementation
1000
x6613
1054A
Elevator or Stairs?
implementation
800
x9106
1051B
Relatively Prime Pairs
greedy
,
math
,
number theory
1000
x17259
1051A
Vasya And Password
greedy
,
implementation
,
strings
1200
x8433
1047B
Cover Points
geometry
,
math
900
x17325
1047A
Little C Loves 3 I
math
800
x20030
1043B
Lost Array
implementation
1200
x6307
1043A
Elections
implementation
,
math
800
x10824
1042B
Vitamins
bitmasks
,
brute force
,
dp
,
implementation
1200
x16353
1042A
Benches
binary search
,
implementation
1100
x12981
1041B
Buying a TV Set
math
1000
x14080
1041A
Heist
greedy
,
implementation
,
sortings
800
x25243
1040A
Palindrome Dance
greedy
1000
x9584
1038B
Non-Coprime Partition
constructive algorithms
,
math
1100
x13658
1038A
Equality
implementation
,
strings
800
x14981
1036A
Function Height
math
1000
x10183
1033B
Square Difference
math
,
number theory
1100
x9926
1033A
King Escape
dfs and similar
,
graphs
,
implementation
1000
x13822
1032B
Personalized Cup
1200
x5005
1032A
Kitchen Utensils
900
x6874
1031A
Golden Plate
implementation
,
math
800
x12920
1030B
Vasya and Cornfield
geometry
1100
x12400
1030A
In Search of an Easy Problem
implementation
800
x134811
1029B
Creating the Contest
dp
,
greedy
,
math
1200
x17065
1028B
Unnatural Conditions
constructive algorithms
,
math
1200
x9130
1028A
Find Square
implementation
800
x10913
1027B
Numbers on the Chessboard
implementation
,
math
1200
x8404
1027A
Palindromic Twist
implementation
,
strings
1000
x16434
1025A
Doggo Recoloring
implementation
,
sortings
900
x15219
1023C
Bracket Subsequence
greedy
1200
x9996
1023B
Pair of Toys
math
1000
x10917
1023A
Single Wildcard Pattern Matching
brute force
,
implementation
,
strings
1200
x8724
1020B
Badge
brute force
,
dfs and similar
,
graphs
1000
x21526
1020A
New Building for SIS
math
1000
x9019
1017B
The Bits
implementation
,
math
1200
x9172
1017A
The Rank
implementation
800
x20577
1016A
Death Note
greedy
,
implementation
,
math
900
x14951
1015C
Songs Compression
sortings
1100
x18177
1015B
Obtaining the String
implementation
1200
x11634
1015A
Points in Segments
implementation
800
x21071
1013B
And
greedy
1200
x7690
1013A
Piles With Stones
math
800
x10993
1011B
Planning The Expedition
binary search
,
brute force
,
implementation
1200
x10197
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