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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
Standings
Custom test
Problems
#
Name
903A
Hungry Student Problem
greedy
,
implementation
900
x14661
902B
Coloring a Tree
dfs and similar
,
dsu
,
greedy
1200
x10904
902A
Visiting a Friend
greedy
,
implementation
1100
x9857
900A
Find Extra One
geometry
,
implementation
800
x13672
899B
Months and Years
implementation
1200
x5901
899A
Splitting in Teams
constructive algorithms
,
greedy
,
math
800
x10265
898B
Proper Nutrition
brute force
,
implementation
,
number theory
1100
x9612
898A
Rounding
implementation
,
math
800
x16297
897A
Scarborough Fair
implementation
800
x14299
895A
Pizza Separation
brute force
,
implementation
1200
x6575
894A
QAQ
brute force
,
dp
800
x35035
893B
Beautiful Divisors
brute force
,
implementation
1000
x11500
893A
Chess For Three
implementation
900
x10279
892B
Wrath
greedy
,
implementation
,
two pointers
1200
x9054
892A
Greed
greedy
,
implementation
900
x13613
888B
Buggy Robot
greedy
1000
x9813
888A
Local Extrema
brute force
,
implementation
800
x11056
887A
Div. 64
implementation
1000
x11294
886B
Vlad and Cafes
1000
x7931
886A
ACM ICPC
brute force
1000
x10353
884B
Japanese Crosswords Strike Back
implementation
1100
x6889
884A
Book Reading
implementation
800
x10507
883M
Quadcopter Competition
greedy
,
math
1100
x3604
879B
Table Tennis
data structures
,
implementation
1200
x12494
879A
Borya's Diagnosis
implementation
900
x9095
877A
Alex and broken contest
implementation
,
strings
1100
x10899
876A
Trip For Meal
math
900
x9404
875A
Classroom Watch
brute force
,
math
1200
x9651
873A
Chores
implementation
800
x8337
870B
Maximum of Maximums of Minimums
greedy
1200
x9601
870A
Search for Pretty Integers
brute force
,
implementation
900
x10212
869B
The Eternal Immortality
math
1100
x13769
869A
The Artful Expedient
brute force
,
implementation
1100
x9470
868A
Bark to Unlock
brute force
,
implementation
,
strings
900
x8724
867A
Between the Offices
implementation
800
x19385
864B
Polycarp and Letters
brute force
,
implementation
,
strings
1000
x9176
864A
Fair Game
implementation
,
sortings
1000
x11679
863A
Quasi-palindrome
brute force
,
implementation
900
x10262
862A
Mahmoud and Ehab and the MEX
greedy
,
implementation
1000
x9567
859B
Lazy Security Guard
brute force
,
geometry
,
math
1000
x7068
859A
Declined Finalists
greedy
,
implementation
800
x7788
858A
k-rounding
brute force
,
math
,
number theory
1100
x8095
855A
Tom Riddle's Diary
brute force
,
implementation
,
strings
800
x22088
854B
Maxim Buys an Apartment
constructive algorithms
,
math
1200
x8201
854A
Fraction
brute force
,
constructive algorithms
,
math
800
x13679
851A
Arpa and a research in Mexican wave
implementation
,
math
800
x9793
849A
Odds and Ends
implementation
1000
x9110
847M
Weather Tomorrow
implementation
,
math
1000
x6309
847G
University Classes
implementation
900
x6852
845A
Chess Tourney
implementation
,
sortings
1100
x7800
844A
Diversity
greedy
,
implementation
,
strings
1000
x11030
842B
Gleb And Pizza
geometry
1100
x10368
842A
Kirill And The Game
brute force
,
two pointers
1200
x10240
841B
Godsend
games
,
math
1100
x12314
841A
Generous Kefa
brute force
,
implementation
900
x13255
839A
Arya and Bran
implementation
900
x14210
837A
Text Volume
implementation
800
x9484
835B
The number on the board
greedy
1100
x11060
835A
Key races
math
800
x20356
834B
The Festive Evening
data structures
,
implementation
1100
x8827
834A
The Useless Toy
implementation
900
x8694
832A
Sasha and Sticks
games
,
math
800
x20872
831B
Keyboard Layouts
implementation
,
strings
800
x14535
831A
Unimodal Array
implementation
1000
x10309
828A
Restaurant Tables
implementation
1200
x7955
825A
Binary Protocol
implementation
1100
x7707
822B
Crossword solving
brute force
,
implementation
,
strings
1000
x9553
822A
I'm bored with life
implementation
,
math
,
number theory
800
x33433
821A
Okabe and Future Gadget Laboratory
implementation
800
x8319
820A
Mister B and Book Reading
implementation
900
x8184
818A
Diplomas and Certificates
implementation
,
math
800
x7027
817A
Treasure Hunt
implementation
,
math
,
number theory
1200
x6272
816A
Karen and Morning
brute force
,
implementation
1000
x9150
814A
An abandoned sentiment from past
constructive algorithms
,
greedy
,
implementation
,
sortings
900
x10447
813A
The Contest
implementation
1100
x5106
812A
Sagheer and Crossroads
implementation
1200
x6223
811B
Vladik and Complicated Book
implementation
,
sortings
1200
x6512
811A
Vladik and Courtesy
brute force
,
implementation
800
x11933
810A
Straight <<A>>
implementation
,
math
900
x8853
808A
Lucky Year
implementation
900
x9382
807A
Is it rated?
implementation
,
sortings
900
x20860
805B
3-palindrome
constructive algorithms
1000
x17041
805A
Fake NP
greedy
,
math
1000
x18101
804A
Find Amir
constructive algorithms
,
greedy
,
math
1000
x15521
803B
Distances to Zero
constructive algorithms
1200
x6599
802M
April Fools' Problem (easy)
greedy
,
sortings
1200
x3156
802G
Fake News (easy)
implementation
,
strings
800
x7074
801B
Valued Keys
constructive algorithms
,
greedy
,
strings
900
x10396
801A
Vicious Keyboard
brute force
1100
x7344
799A
Carrot Cakes
brute force
,
implementation
1100
x19046
798A
Mike and palindrome
brute force
,
constructive algorithms
,
strings
1000
x21886
797A
k-Factorization
implementation
,
math
,
number theory
1100
x15671
796A
Buying A House
brute force
,
implementation
800
x13075
794B
Cutting Carrot
geometry
,
math
1200
x6644
794A
Bank Robbery
brute force
,
implementation
800
x7106
793A
Oleg and shares
implementation
,
math
900
x6854
792A
New Bus Route
implementation
,
sortings
1100
x9031
791A
Bear and Big Brother
implementation
800
x199497
789A
Anastasia and pebbles
implementation
,
math
1100
x9345
787A
The Monster
brute force
,
math
,
number theory
1200
x11461
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