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Before contest
Codeforces Round 946 (Div. 3)
17:03:18
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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
#
Name
596A
Wilbur and Swimming Pool
geometry
,
implementation
1100
x7606
825A
Binary Protocol
implementation
1100
x7556
950B
Intercepted Message
greedy
,
implementation
1100
x7306
984B
Minesweeper
implementation
1100
x7266
801A
Vicious Keyboard
brute force
1100
x7218
754B
Ilya and tic-tac-toe game
brute force
,
implementation
1100
x7170
1121A
Technogoblet of Fire
implementation
,
sortings
1100
x7106
765B
Code obfuscation
greedy
,
implementation
,
strings
1100
x7030
7A
Kalevitch and Chess
brute force
,
constructive algorithms
1100
x6862
389B
Fox and Cross
greedy
,
implementation
1100
x6818
884B
Japanese Crosswords Strike Back
implementation
1100
x6803
975B
Mancala
brute force
,
implementation
1100
x6748
505A
Mr. Kitayuta's Gift
brute force
,
implementation
,
strings
1100
x6602
381B
Sereja and Stairs
greedy
,
implementation
,
sortings
1100
x6589
955A
Feed the cat
greedy
,
math
1100
x6558
257A
Sockets
greedy
,
implementation
,
sortings
1100
x6387
242A
Heads or Tails
brute force
,
implementation
1100
x6237
192B
Walking in the Rain
brute force
,
implementation
1100
x6148
331C1
The Great Julya Calendar
dp
1100
x5936
103A
Testing Pants for Sadness
greedy
,
implementation
,
math
1100
x5870
12C
Fruits
greedy
,
implementation
,
sortings
1100
x5788
190A
Vasya and the Bus
greedy
,
math
1100
x5719
405B
Domino Effect
1100
x5629
667B
Coat of Anticubism
constructive algorithms
,
geometry
1100
x5457
196A
Lexicographically Maximum Subsequence
greedy
,
strings
1100
x5305
90B
African Crossword
implementation
,
strings
1100
x5171
252A
Little Xor
brute force
,
implementation
1100
x5170
245B
Internet Address
implementation
,
strings
1100
x5136
813A
The Contest
implementation
1100
x5013
312A
Whose sentence is it?
implementation
,
strings
1100
x4863
53A
Autocomplete
implementation
1100
x4843
1070K
Video Posts
implementation
1100
x4832
68A
Irrational problem
implementation
,
number theory
1100
x4818
136B
Ternary Logic
implementation
,
math
1100
x4705
475A
Bayan Bus
implementation
1100
x4689
402A
Nuts
greedy
,
math
1100
x4514
366A
Dima and Guards
implementation
1100
x4482
355B
Vasya and Public Transport
greedy
,
implementation
1100
x4433
967A
Mind the Gap
implementation
1100
x4280
1575A
Another Sorting Problem
data structures
,
sortings
,
strings
1100
x4227
638A
Home Numbers
*special problem
,
constructive algorithms
,
math
1100
x3759
39D
Cubical Planet
math
1100
x3754
159B
Matchmaker
*special problem
,
greedy
,
sortings
1100
x3680
120C
Winnie-the-Pooh and honey
implementation
,
math
1100
x3587
46B
T-shirts from Sponsor
implementation
1100
x3541
883M
Quadcopter Competition
greedy
,
math
1100
x3493
1231C
Increasing Matrix
greedy
1100
x3471
120B
Quiz League
implementation
1100
x3341
169B
Replacing Digits
greedy
1100
x3195
635A
Orchestra
brute force
,
implementation
1100
x2821
690A1
Collective Mindsets (easy)
1100
x2773
174A
Problem About Equation
math
1100
x2686
292A
SMSC
implementation
1100
x2638
316A1
Special Task
greedy
1100
x2593
1910A
Username
*special problem
,
implementation
1100
x1611
178A3
Educational Game
greedy
1100
x1395
1001A
Generate plus state or minus state
*special problem
1100
x1003
1958A
1-3-5
*special problem
,
dp
1100
x979
100A
Carpeting the Room
*special problem
,
implementation
1100
x892
648C
Путь Робота
constructive algorithms
,
dfs and similar
,
graphs
1100
x846
162A
Pentagonal numbers
*special problem
,
implementation
1100
x793
188A
Hexagonal Numbers
*special problem
1100
x762
188D
Asterisks
*special problem
,
implementation
1100
x657
1115G1
AND oracle
*special problem
1100
x382
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