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Rayan
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Before contest
Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)
13:53:07
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Difficulty:
—
greedy
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
892B
Wrath
greedy
,
implementation
,
two pointers
1200
x9060
892A
Greed
greedy
,
implementation
900
x13618
891B
Gluttony
constructive algorithms
,
greedy
2000
x3014
891A
Pride
brute force
,
dp
,
greedy
,
math
,
number theory
1500
x10320
888B
Buggy Robot
greedy
1000
x9842
887F
Row of Models
greedy
,
sortings
2500
x166
886C
Petya and Catacombs
dsu
,
greedy
,
implementation
,
trees
1300
x5484
884F
Anti-Palindromize
flows
,
graphs
,
greedy
2500
x1074
884D
Boxes And Balls
data structures
,
greedy
2300
x2046
884C
Bertown Subway
dfs and similar
,
greedy
,
math
1500
x4751
883M
Quadcopter Competition
greedy
,
math
1100
x3610
883K
Road Widening
constructive algorithms
,
greedy
,
implementation
1800
x1104
883J
Renovation
constructive algorithms
,
greedy
,
sortings
2400
x581
883B
Berland Army
constructive algorithms
,
graphs
,
greedy
2600
x378
875F
Royal Questions
dsu
,
graphs
,
greedy
2500
x1370
873C
Strange Game On Matrix
greedy
,
two pointers
1600
x3320
871E
Restore the Tree
graphs
,
greedy
,
trees
2900
x149
870C
Maximum splitting
dp
,
greedy
,
math
,
number theory
1300
x9236
870B
Maximum of Maximums of Minimums
greedy
1200
x9613
865D
Buy Low Sell High
constructive algorithms
,
data structures
,
greedy
2400
x5818
864D
Make a Permutation!
greedy
,
implementation
,
math
1500
x6014
864C
Bus
greedy
,
implementation
,
math
1500
x5868
863B
Kayaking
brute force
,
greedy
,
sortings
1500
x8463
862A
Mahmoud and Ehab and the MEX
greedy
,
implementation
1000
x9580
859F
Ordering T-Shirts
greedy
2800
x187
859A
Declined Finalists
greedy
,
implementation
800
x7790
858E
Tests Renumeration
greedy
,
implementation
2200
x510
858C
Did you mean...
dp
,
greedy
,
implementation
1500
x5636
856F
To Play or not to Play
greedy
3000
x104
853D
Michael and Charging Stations
binary search
,
dp
,
greedy
2400
x678
853B
Jury Meeting
greedy
,
sortings
,
two pointers
1800
x2535
853A
Planning
greedy
1500
x5874
852C
Property
greedy
,
sortings
2100
x601
850D
Tournament Construction
constructive algorithms
,
dp
,
graphs
,
greedy
,
math
2800
x393
847K
Travel Cards
greedy
,
implementation
,
sortings
1800
x1697
847H
Load Testing
greedy
1600
x2452
847F
Berland Elections
greedy
,
sortings
2100
x869
847D
Dog Show
constructive algorithms
,
data structures
,
greedy
2200
x1218
846E
Chemistry in Berland
dfs and similar
,
greedy
,
trees
2300
x907
846B
Math Show
brute force
,
greedy
1800
x2526
845D
Driving Test
data structures
,
dp
,
greedy
1800
x2396
845C
Two TVs
data structures
,
greedy
,
sortings
1500
x8822
845B
Luba And The Ticket
brute force
,
greedy
,
implementation
1600
x5051
844A
Diversity
greedy
,
implementation
,
strings
1000
x11033
840A
Leha and Function
combinatorics
,
greedy
,
math
,
number theory
,
sortings
1300
x7010
839B
Game of the Rows
brute force
,
greedy
,
implementation
1900
x3333
835B
The number on the board
greedy
1100
x11061
833C
Ever-Hungry Krakozyabra
brute force
,
combinatorics
,
greedy
,
math
2700
x473
830A
Office Keys
binary search
,
brute force
,
dp
,
greedy
,
sortings
1800
x7127
827B
High Load
constructive algorithms
,
greedy
,
implementation
,
trees
1800
x3543
827A
String Reconstruction
data structures
,
greedy
,
sortings
,
strings
1700
x4056
825E
Minimal Labels
data structures
,
dfs and similar
,
graphs
,
greedy
2300
x3497
825D
Suitable Replacement
binary search
,
greedy
,
implementation
1500
x3324
825C
Multi-judge Solving
greedy
,
implementation
1600
x4562
822D
My pretty girl Noora
brute force
,
dp
,
greedy
,
math
,
number theory
1800
x3116
822C
Hacker, pack your bags!
binary search
,
greedy
,
implementation
,
sortings
1600
x4605
821C
Okabe and Boxes
data structures
,
greedy
,
trees
1500
x6977
819A
Mister B and Boring Game
games
,
greedy
2200
x496
815A
Karen and Game
brute force
,
greedy
,
implementation
1700
x5677
814D
An overnight dance in discotheque
dfs and similar
,
dp
,
geometry
,
greedy
,
trees
2000
x2369
814A
An abandoned sentiment from past
constructive algorithms
,
greedy
,
implementation
,
sortings
900
x10449
810B
Summer sell-off
greedy
,
sortings
1300
x11529
808E
Selling Souvenirs
binary search
,
dp
,
greedy
,
ternary search
2300
x1867
808C
Tea Party
constructive algorithms
,
greedy
,
sortings
1400
x6230
805A
Fake NP
greedy
,
math
1000
x18105
804C
Ice cream coloring
constructive algorithms
,
dfs and similar
,
greedy
2200
x1845
804B
Minimum number of steps
combinatorics
,
greedy
,
implementation
,
math
1400
x9697
804A
Find Amir
constructive algorithms
,
greedy
,
math
1000
x15525
803D
Magazine Ad
binary search
,
greedy
1900
x3318
803C
Maximal GCD
constructive algorithms
,
greedy
,
math
1900
x5149
802M
April Fools' Problem (easy)
greedy
,
sortings
1200
x3158
802B
Heidi and Library (medium)
data structures
,
greedy
1800
x1147
802A
Heidi and Library (easy)
greedy
1800
x1391
801B
Valued Keys
constructive algorithms
,
greedy
,
strings
900
x10398
799E
Aquarium decoration
data structures
,
greedy
,
two pointers
2500
x937
798C
Mike and gcd problem
dp
,
greedy
,
number theory
1700
x5846
797F
Mice and Holes
data structures
,
dp
,
greedy
,
sortings
2600
x1236
797C
Minimal string
data structures
,
greedy
,
strings
1700
x6820
797B
Odd sum
dp
,
greedy
,
implementation
1400
x10642
796F
Sequence Recovery
bitmasks
,
data structures
,
greedy
2800
x181
794C
Naming Company
games
,
greedy
,
sortings
1800
x3149
792E
Colored Balls
greedy
,
math
,
number theory
2500
x1097
792C
Divide by Three
dp
,
greedy
,
math
,
number theory
2000
x4444
787B
Not Afraid
greedy
,
implementation
,
math
1300
x5611
785B
Anton and Classes
greedy
,
sortings
1100
x10251
780D
Innokenty and a Football League
2-sat
,
graphs
,
greedy
,
implementation
,
shortest paths
,
strings
1900
x2915
780C
Andryusha and Colored Balloons
dfs and similar
,
graphs
,
greedy
,
trees
1600
x9168
779C
Dishonest Sellers
constructive algorithms
,
greedy
,
sortings
1200
x11920
779B
Weird Rounding
brute force
,
greedy
1100
x10367
778A
String Game
binary search
,
greedy
,
strings
1700
x11681
777E
Hanoi Factory
brute force
,
data structures
,
dp
,
greedy
,
sortings
2000
x4097
777D
Cloud of Hashtags
binary search
,
greedy
,
implementation
,
strings
1800
x5037
777C
Alyona and Spreadsheet
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
two pointers
1600
x6423
777B
Game of Credit Cards
data structures
,
dp
,
greedy
,
sortings
1300
x9499
774C
Maximum Number
*special problem
,
constructive algorithms
,
greedy
,
implementation
1200
x4095
773C
Prairie Partition
binary search
,
constructive algorithms
,
greedy
,
math
2200
x961
773B
Dynamic Problem Scoring
brute force
,
greedy
2000
x1172
771E
Bear and Rectangle Strips
dp
,
greedy
3000
x502
771B
Bear and Different Names
constructive algorithms
,
greedy
1500
x6933
769C
Cycle In Maze
*special problem
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
1700
x2312
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