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Codeforces Round 945 (Div. 2)
13:07:17
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→ Filter Problems
Difficulty:
—
implementation
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
839A
Arya and Bran
implementation
900
x13948
1505A
Is it rated - 2
*special problem
,
implementation
,
interactive
900
x14021
1732B
Ugu
brute force
,
dp
,
greedy
,
implementation
900
x14031
706A
Beru-taxi
brute force
,
geometry
,
implementation
900
x14264
1106C
Lunar New Year and Number Division
greedy
,
implementation
,
math
,
sortings
900
x14293
915A
Garden
implementation
900
x14372
903A
Hungry Student Problem
greedy
,
implementation
900
x14386
1282A
Temporarily unavailable
implementation
,
math
900
x14511
1025A
Doggo Recoloring
implementation
,
sortings
900
x14570
1016A
Death Note
greedy
,
implementation
,
math
900
x14680
1008A
Romaji
implementation
,
strings
900
x14748
1313A
Fast Food Restaurant
brute force
,
greedy
,
implementation
900
x15197
1201A
Important Exam
implementation
,
strings
900
x15333
918B
Radio Station
implementation
,
strings
900
x15698
1904A
Forked!
brute force
,
implementation
900
x15989
496A
Minimum Difficulty
brute force
,
implementation
,
math
900
x16121
152A
Marks
implementation
900
x16212
1351B
Square?
brute force
,
implementation
,
math
900
x16461
1609A
Divide and Multiply
greedy
,
implementation
,
math
,
number theory
900
x16687
1144B
Parity Alternated Deletions
greedy
,
implementation
,
sortings
900
x16781
16B
Burglar and Matches
greedy
,
implementation
,
sortings
900
x16934
1480B
The Great Hero
greedy
,
implementation
,
sortings
900
x16940
999B
Reversing Encryption
implementation
900
x17135
1808A
Lucky Numbers
brute force
,
implementation
900
x17360
1138A
Sushi for Two
binary search
,
greedy
,
implementation
900
x17419
1175A
From Hero to Zero
implementation
,
math
900
x17819
1216B
Shooting
greedy
,
implementation
,
sortings
900
x18083
1330A
Dreamoon and Ranking Collection
implementation
900
x18430
1501B
Napoleon Cake
dp
,
implementation
,
sortings
900
x18482
519A
A and B and Chess
implementation
900
x18573
1451B
Non-Substring Subsequence
dp
,
greedy
,
implementation
,
strings
900
x19010
1419A
Digit Game
games
,
greedy
,
implementation
900
x19270
807A
Is it rated?
implementation
,
sortings
900
x19554
621A
Wet Shark and Odd and Even
implementation
900
x19609
1426B
Symmetric Matrix
implementation
900
x20362
1494A
ABC String
bitmasks
,
brute force
,
implementation
900
x20429
913A
Modular Exponentiation
implementation
,
math
900
x20618
1141B
Maximal Continuous Rest
implementation
900
x20680
1845B
Come Together
geometry
,
implementation
,
math
900
x20902
1406A
Subset Mex
greedy
,
implementation
,
math
900
x20967
1095B
Array Stabilization
implementation
900
x21229
205A
Little Elephant and Rozdil
brute force
,
implementation
900
x21570
129A
Cookies
implementation
900
x21776
1709B
Also Try Minecraft
data structures
,
dp
,
implementation
900
x21882
501A
Contest
implementation
900
x22011
1918B
Minimize Inversions
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
900
x22190
1705B
Mark the Dust Sweeper
constructive algorithms
,
greedy
,
implementation
900
x22228
1005B
Delete from the Left
brute force
,
implementation
,
strings
900
x22398
1971C
Clock and Strings
implementation
900
x22937
1856B
Good Arrays
implementation
,
math
900
x23182
1326B
Maximums
implementation
,
math
900
x23527
1613A
Long Comparison
implementation
,
math
900
x23980
1675B
Make It Increasing
greedy
,
implementation
900
x24798
1486A
Shifting Stacks
greedy
,
implementation
900
x24862
439A
Devu, the Singer and Churu, the Joker
greedy
,
implementation
900
x24889
199A
Hexadecimal's theorem
brute force
,
constructive algorithms
,
implementation
,
number theory
900
x25166
1324A
Yet Another Tetris Problem
implementation
,
number theory
900
x25322
1206B
Make Product Equal One
dp
,
implementation
900
x26082
746B
Decoding
implementation
,
strings
900
x26312
1872B
The Corridor or There and Back Again
greedy
,
implementation
900
x26683
276A
Lunch Rush
implementation
900
x26766
1915D
Unnatural Language Processing
greedy
,
implementation
,
strings
900
x27828
1714A
Everyone Loves to Sleep
implementation
,
math
900
x28556
275A
Lights Out
implementation
900
x28679
1807D
Odd Queries
data structures
,
implementation
900
x28859
709A
Juicer
implementation
900
x30135
567A
Lineland Mail
greedy
,
implementation
900
x30652
1339A
Filling Diamonds
brute force
,
dp
,
implementation
,
math
900
x31136
1742C
Stripes
implementation
900
x31153
1850D
Balanced Round
brute force
,
greedy
,
implementation
,
sortings
900
x32569
1337B
Kana and Dragon Quest game
greedy
,
implementation
,
math
900
x33119
1624B
Make AP
implementation
,
math
900
x34354
977B
Two-gram
implementation
,
strings
900
x36955
149A
Business trip
greedy
,
implementation
,
sortings
900
x37876
474A
Keyboard
implementation
900
x42881
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x44359
313A
Ilya and Bank Account
implementation
,
number theory
900
x53725
451A
Game With Sticks
implementation
900
x62841
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x84160
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x94767
133A
HQ9+
implementation
900
x100273
96A
Football
implementation
,
strings
900
x149608
769A
Year of University Entrance
*special problem
,
implementation
,
sortings
800
x5574
421A
Pasha and Hamsters
constructive algorithms
,
implementation
800
x5778
172A
Phone Code
*special problem
,
brute force
,
implementation
800
x5901
386A
Second-Price Auction
implementation
800
x5924
291A
Spyke Talks
*special problem
,
implementation
,
sortings
800
x5987
1056A
Determine Line
implementation
800
x6542
306A
Candies
implementation
800
x6601
181A
Series of Crimes
brute force
,
geometry
,
implementation
800
x6718
802G
Fake News (easy)
implementation
,
strings
800
x6725
818A
Diplomas and Certificates
implementation
,
math
800
x6786
794A
Bank Robbery
brute force
,
implementation
800
x6922
658A
Bear and Reverse Radewoosh
implementation
800
x6968
411A
Password Check
*special problem
,
implementation
800
x6997
177A2
Good Matrix Elements
implementation
800
x7066
440A
Forgotten Episode
implementation
800
x7101
1250F
Data Center
brute force
,
implementation
800
x7152
859A
Declined Finalists
greedy
,
implementation
800
x7618
760A
Petr and a calendar
implementation
,
math
800
x7741
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