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Codeforces Round 946 (Div. 3)
36:57:25
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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
392C
Yet Another Number Sequence
combinatorics
,
math
,
matrices
x579
392B
Tower of Hanoi
dp
x885
392A
Blocked Points
math
x964
391F3
Stock Trading
x105
391F2
Stock Trading
greedy
x104
391F1
Stock Trading
dp
x162
391E2
Three Trees
x146
391E1
Three Trees
x114
391D2
Supercollider
data structures
x177
391D1
Supercollider
brute force
x201
391C3
The Tournament
x164
391C2
The Tournament
greedy
x131
391C1
The Tournament
brute force
x182
391B
Word Folding
brute force
x380
391A
Genetic Engineering
implementation
,
two pointers
x1702
390E
Inna and Large Sweet Matrix
x256
390D
Inna and Sweet Matrix
constructive algorithms
x505
390C
Inna and Candy Boxes
data structures
x623
390B
Inna, Dima and Song
implementation
x1167
390A
Inna and Alarm Clock
implementation
x3452
389B
Fox and Cross
greedy
,
implementation
1100
x6818
389A
Fox and Number Game
greedy
,
math
1000
x13849
388E
Fox and Meteor Shower
geometry
3100
x119
388D
Fox and Perfect Sets
math
2700
x436
388C
Fox and Card Game
games
,
greedy
,
sortings
2000
x3093
388B
Fox and Minimal path
bitmasks
,
constructive algorithms
,
graphs
,
implementation
,
math
1900
x2435
388A
Fox and Box Accumulation
greedy
,
sortings
1400
x11352
387E
George and Cards
binary search
,
data structures
2200
x849
387D
George and Interesting Graph
graph matchings
2200
x960
387C
George and Number
greedy
,
implementation
1700
x2160
387B
George and Round
brute force
,
greedy
,
two pointers
1200
x11925
387A
George and Sleep
implementation
900
x9522
386D
Game with Points
dp
,
graphs
,
implementation
,
shortest paths
2100
x413
386C
Diverse Substrings
dp
,
strings
,
two pointers
2000
x745
386B
Fly, freebies, fly!
binary search
,
brute force
,
implementation
1400
x2090
386A
Second-Price Auction
implementation
800
x5931
385E
Bear in the Field
math
,
matrices
2300
x559
385D
Bear and Floodlight
bitmasks
,
dp
,
geometry
2200
x797
385C
Bear and Prime Numbers
binary search
,
brute force
,
data structures
,
dp
,
implementation
,
math
,
number theory
1700
x9396
385B
Bear and Strings
brute force
,
greedy
,
implementation
,
math
,
strings
1200
x9547
385A
Bear and Raspberry
brute force
,
greedy
,
implementation
1000
x16235
384B
Multitasking
greedy
,
implementation
,
sortings
,
two pointers
1500
x3488
384A
Coder
implementation
800
x15900
383E
Vowels
combinatorics
,
divide and conquer
,
dp
2700
x2746
383D
Antimatter
dp
2300
x2895
383C
Propagating tree
data structures
,
dfs and similar
,
trees
2000
x6123
383B
Volcanoes
binary search
,
implementation
,
sortings
,
two pointers
2500
x653
383A
Milking cows
data structures
,
greedy
1600
x5213
382E
Ksenia and Combinatorics
combinatorics
,
dp
2600
x368
382D
Ksenia and Pawns
dfs and similar
,
graphs
,
implementation
,
trees
2200
x650
382C
Arithmetic Progression
implementation
,
sortings
1700
x8163
382B
Number Busters
binary search
,
math
2000
x1386
382A
Ksenia and Pan Scales
greedy
,
implementation
1100
x11797
381B
Sereja and Stairs
greedy
,
implementation
,
sortings
1100
x6589
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60692
380E
Sereja and Dividing
data structures
2600
x294
380D
Sereja and Cinema
combinatorics
,
math
2500
x411
380C
Sereja and Brackets
data structures
,
schedules
2000
x13631
380B
Sereja and Tree
graphs
,
implementation
2400
x530
380A
Sereja and Prefixes
binary search
,
brute force
1600
x2655
379G
New Year Cactus
dp
3100
x139
379F
New Year Tree
data structures
,
divide and conquer
,
trees
2400
x2118
379E
New Year Tree Decorations
geometry
,
schedules
,
sortings
2500
x337
379D
New Year Letter
bitmasks
,
brute force
,
dp
2000
x1483
379C
New Year Ratings Change
greedy
,
sortings
1400
x6494
379B
New Year Present
constructive algorithms
,
implementation
1200
x7186
379A
New Year Candles
implementation
1000
x44590
378B
Semifinals
implementation
,
sortings
1300
x5111
378A
Playing with Dice
brute force
800
x23149
377E
Cookie Clicker
dp
,
geometry
2800
x444
377D
Developing Game
data structures
2400
x1087
377C
Captains Mode
bitmasks
,
dp
,
games
2200
x1106
377B
Preparing for the Contest
binary search
,
data structures
,
greedy
,
sortings
1900
x1976
377A
Maze
dfs and similar
1600
x21433
376B
I.O.U.
implementation
1300
x6109
376A
Lever
implementation
,
math
900
x9032
375E
Red and Black Tree
dp
,
implementation
,
math
3000
x398
375D
Tree and Queries
data structures
,
dfs and similar
,
trees
2400
x6225
375C
Circling Round Treasures
bitmasks
,
shortest paths
2600
x473
375B
Maximum Submatrix 2
data structures
,
dp
,
implementation
,
sortings
1600
x4960
375A
Divisible by Seven
math
,
number theory
1600
x4666
374E
Inna and Babies
binary search
,
data structures
,
dsu
,
geometry
,
implementation
2600
x178
374D
Inna and Sequence
binary search
,
data structures
,
dp
,
trees
2000
x844
374C
Inna and Dima
dfs and similar
,
dp
,
graphs
,
implementation
1900
x2659
374B
Inna and Nine
combinatorics
,
greedy
1500
x3234
374A
Inna and Pink Pony
greedy
,
implementation
2000
x2843
373B
Making Sequences is Fun
binary search
,
implementation
,
math
1600
x2439
373A
Collecting Beats is Fun
implementation
900
x10317
372E
Drawing Circles is Fun
combinatorics
,
geometry
3000
x169
372D
Choosing Subtree is Fun
binary search
,
data structures
,
dfs and similar
,
trees
,
two pointers
2600
x911
372C
Watching Fireworks is Fun
data structures
,
dp
,
math
2100
x3640
372B
Counting Rectangles is Fun
brute force
,
divide and conquer
,
dp
1900
x2521
372A
Counting Kangaroos is Fun
binary search
,
greedy
,
sortings
,
two pointers
1600
x12391
371E
Subway Innovation
greedy
,
math
,
two pointers
2000
x1207
371D
Vessels
data structures
,
dsu
,
implementation
,
trees
1800
x5344
371C
Hamburgers
binary search
,
brute force
1600
x23732
371B
Fox Dividing Cheese
math
,
number theory
1300
x10926
371A
K-Periodic Array
greedy
,
implementation
,
math
1000
x5954
370E
Summer Reading
dp
,
greedy
2500
x230
370D
Broken Monitor
brute force
,
constructive algorithms
,
greedy
,
implementation
2100
x613
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