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Codeforces Round 950 (Div. 3)
23:14:02
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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
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shortest paths
sortings
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strings
ternary search
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Problems
#
Name
362B
Petya and Staircases
implementation
,
sortings
1100
x13531
355B
Vasya and Public Transport
greedy
,
implementation
1100
x4437
355A
Vasya and Digital Root
constructive algorithms
,
implementation
1100
x9279
349A
Cinema Line
greedy
,
implementation
1100
x28883
347B
Fixed Points
brute force
,
implementation
,
math
1100
x9165
331C1
The Great Julya Calendar
dp
1100
x5950
316A1
Special Task
greedy
1100
x2598
313B
Ilya and Queries
dp
,
implementation
1100
x41778
312A
Whose sentence is it?
implementation
,
strings
1100
x4878
300A
Array
brute force
,
constructive algorithms
,
implementation
1100
x22032
296A
Yaroslav and Permutations
greedy
,
math
1100
x22114
292A
SMSC
implementation
1100
x2642
289A
Polo the Penguin and Segments
brute force
,
implementation
1100
x8778
287A
IQ Test
brute force
,
implementation
1100
x18959
285A
Slightly Decreasing Permutations
greedy
,
implementation
1100
x13134
270A
Fancy Fence
geometry
,
implementation
,
math
1100
x43708
259B
Little Elephant and Magic Square
brute force
,
implementation
1100
x13714
258A
Little Elephant and Bits
greedy
,
math
1100
x22177
257A
Sockets
greedy
,
implementation
,
sortings
1100
x6394
253A
Boys and Girls
greedy
1100
x10985
252A
Little Xor
brute force
,
implementation
1100
x5179
245B
Internet Address
implementation
,
strings
1100
x5138
242B
Big Segment
implementation
,
sortings
1100
x15268
242A
Heads or Tails
brute force
,
implementation
1100
x6245
227B
Effective Approach
implementation
1100
x26664
225A
Dice Tower
constructive algorithms
,
greedy
1100
x11178
224A
Parallelepiped
brute force
,
geometry
,
math
1100
x25554
218B
Airport
implementation
1100
x15840
218A
Mountain Scenery
brute force
,
constructive algorithms
,
implementation
1100
x8962
196A
Lexicographically Maximum Subsequence
greedy
,
strings
1100
x5312
192B
Walking in the Rain
brute force
,
implementation
1100
x6153
190A
Vasya and the Bus
greedy
,
math
1100
x5722
188D
Asterisks
*special problem
,
implementation
1100
x659
188A
Hexagonal Numbers
*special problem
1100
x765
186A
Comparing Strings
implementation
,
strings
1100
x16307
178A3
Educational Game
greedy
1100
x1396
174A
Problem About Equation
math
1100
x2725
169B
Replacing Digits
greedy
1100
x3198
166A
Rank List
binary search
,
implementation
,
sortings
1100
x16880
162A
Pentagonal numbers
*special problem
,
implementation
1100
x796
160B
Unlucky Ticket
greedy
,
sortings
1100
x13628
159B
Matchmaker
*special problem
,
greedy
,
sortings
1100
x3686
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x83056
155B
Combination
greedy
,
sortings
1100
x10044
136B
Ternary Logic
implementation
,
math
1100
x4740
121A
Lucky Sum
implementation
1100
x8863
120C
Winnie-the-Pooh and honey
implementation
,
math
1100
x3589
120B
Quiz League
implementation
1100
x3344
116B
Little Pigs and Wolves
greedy
,
implementation
1100
x13466
110B
Lucky String
constructive algorithms
,
strings
1100
x9982
103A
Testing Pants for Sadness
greedy
,
implementation
,
math
1100
x5877
100A
Carpeting the Room
*special problem
,
implementation
1100
x894
90B
African Crossword
implementation
,
strings
1100
x5183
82A
Double Cola
implementation
,
math
1100
x29565
68A
Irrational problem
implementation
,
number theory
1100
x4834
66B
Petya and Countryside
brute force
,
implementation
1100
x19621
53A
Autocomplete
implementation
1100
x4859
46B
T-shirts from Sponsor
implementation
1100
x3549
43B
Letter
implementation
,
strings
1100
x15828
39D
Cubical Planet
math
1100
x3770
25B
Phone numbers
implementation
1100
x9363
12C
Fruits
greedy
,
implementation
,
sortings
1100
x5809
12B
Correct Solution?
implementation
,
sortings
1100
x8107
7A
Kalevitch and Chess
brute force
,
constructive algorithms
1100
x6886
6B
President's Office
implementation
1100
x12224
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