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Codeforces Round 946 (Div. 3)
36:54:06
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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
441B
Valera and Fruits
greedy
,
implementation
1400
x6945
437C
The Child and Toy
graphs
,
greedy
,
sortings
1400
x13527
436B
Om Nom and Spiders
implementation
,
math
1400
x3043
435B
Pasha Maximizes
greedy
1400
x6762
430B
Balls Game
brute force
,
two pointers
1400
x3632
417C
Football
constructive algorithms
,
graphs
,
implementation
1400
x4608
417B
Crash
implementation
1400
x1749
416A
Guess a number!
greedy
,
implementation
,
two pointers
1400
x8669
414B
Mashmokh and ACM
combinatorics
,
dp
,
number theory
1400
x20921
413C
Jeopardy!
greedy
,
math
1400
x2304
402B
Trees in a Row
brute force
,
implementation
1400
x3689
401C
Team
constructive algorithms
,
greedy
,
implementation
1400
x19291
388A
Fox and Box Accumulation
greedy
,
sortings
1400
x11352
386B
Fly, freebies, fly!
binary search
,
brute force
,
implementation
1400
x2090
379C
New Year Ratings Change
greedy
,
sortings
1400
x6494
369B
Valera and Contest
constructive algorithms
,
implementation
,
math
1400
x6295
363C
Fixing Typos
greedy
,
implementation
1400
x13082
359B
Permutation
constructive algorithms
,
dp
,
math
1400
x7731
358A
Dima and Continuous Line
brute force
,
implementation
1400
x7607
357B
Flag Day
constructive algorithms
,
implementation
1400
x8047
337B
Routine Problem
greedy
,
math
,
number theory
1400
x9101
335A
Banana
binary search
,
constructive algorithms
,
greedy
1400
x2516
334B
Eight Point Sets
sortings
1400
x3547
331A1
Oh Sweet Beaverette
brute force
,
implementation
1400
x1337
316A2
Special Task
math
1400
x2100
315A
Sereja and Bottles
brute force
1400
x10728
313C
Ilya and Matrix
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x5526
295A
Greg and Array
data structures
,
implementation
1400
x16117
290D
Orange
*special problem
,
implementation
1400
x1784
290A
Mysterious strings
*special problem
,
implementation
1400
x2949
289B
Polo the Penguin and Matrix
brute force
,
dp
,
implementation
,
sortings
,
ternary search
1400
x16774
286A
Lucky Permutation
constructive algorithms
,
math
1400
x3107
284A
Cows and Primitive Roots
implementation
,
math
,
number theory
1400
x6378
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x48069
279A
Point on Spiral
brute force
,
geometry
,
implementation
1400
x5510
277A
Learning Languages
dfs and similar
,
dsu
1400
x18145
272B
Dima and Sequence
implementation
,
math
1400
x3915
270B
Multithreading
data structures
,
greedy
,
implementation
1400
x4084
261A
Maxim and Discounts
greedy
,
sortings
1400
x5101
260A
Adding Digits
implementation
,
math
1400
x14138
253B
Physics Practical
binary search
,
dp
,
sortings
,
two pointers
1400
x10333
248B
Chilly Willy
math
,
number theory
1400
x5196
245E
Mishap in Club
greedy
,
implementation
1400
x3227
233B
Non-square Equation
binary search
,
brute force
,
math
1400
x7327
228B
Two Tables
brute force
,
implementation
1400
x3432
226A
Flying Saucer Segments
math
1400
x3910
219B
Special Offer! Super Price 999 Bourles!
implementation
1400
x5702
205B
Little Elephant and Sorting
brute force
,
greedy
1400
x5941
203C
Photographer
greedy
,
sortings
1400
x5582
198B
Jumping on Walls
shortest paths
1400
x4114
197B
Limit
math
1400
x4540
188F
Binary Notation
*special problem
,
implementation
1400
x288
188E
HQ9+
*special problem
,
implementation
1400
x490
188C
LCM
*special problem
,
implementation
,
math
1400
x434
182D
Common Divisors
brute force
,
hashing
,
implementation
,
math
,
strings
1400
x7826
180C
Letter
dp
1400
x7079
175B
Plane of Tanks: Pro
implementation
1400
x1372
175A
Robot Bicorn Attack
brute force
,
implementation
1400
x2343
174B
File List
dp
,
greedy
,
implementation
1400
x2191
159C
String Manipulation 1.0
*special problem
,
binary search
,
brute force
,
data structures
,
strings
1400
x2921
159A
Friends or Not
*special problem
,
greedy
,
implementation
1400
x2456
158C
Cd and pwd commands
*special problem
,
data structures
,
implementation
1400
x8900
152C
Pocket Book
combinatorics
1400
x10271
150A
Win or Freeze
games
,
math
,
number theory
1400
x7595
141B
Hopscotch
geometry
,
math
1400
x5145
131C
The World is a Theatre
combinatorics
,
math
1400
x10685
130B
Gnikool Ssalg
*special problem
,
implementation
,
strings
1400
x516
125A
Measuring Lengths in Baden
math
1400
x2643
124B
Permutations
brute force
,
combinatorics
,
implementation
1400
x3762
120F
Spiders
dp
,
greedy
,
trees
1400
x3510
120E
Put Knight!
games
,
math
1400
x2648
120D
Three Sons
brute force
1400
x1897
111A
Petya and Inequiations
greedy
1400
x4628
108B
Datatypes
math
,
sortings
1400
x2417
107A
Dorm Water Supply
dfs and similar
,
graphs
1400
x4955
100C
A+B
*special problem
,
implementation
1400
x515
81A
Plug-in
implementation
1400
x10207
79B
Colorful Field
implementation
,
sortings
1400
x6823
77A
Heroes
brute force
,
implementation
1400
x1746
60B
Serial Time!
dfs and similar
,
dsu
1400
x4449
45I
TCMCF+++
greedy
1400
x2306
44E
Anfisa the Monkey
dp
1400
x4832
42A
Guilty --- to the kitchen!
greedy
,
implementation
1400
x2760
41B
Martian Dollar
brute force
1400
x3878
38C
Blinds
brute force
1400
x2089
30A
Accounting
brute force
,
math
1400
x3321
26B
Regular Bracket Sequence
greedy
1400
x17583
24A
Ring road
graphs
1400
x4786
19A
World Football Cup
implementation
1400
x2628
8B
Obsession with Robots
constructive algorithms
,
graphs
,
implementation
1400
x4079
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