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Codeforces Round 950 (Div. 3)
40:56:33
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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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Custom test
Problems
#
Name
554A
Kyoya and Photobooks
brute force
,
math
,
strings
900
x12776
553E
Kyoya and Train
dp
,
fft
,
graphs
,
math
,
probabilities
3200
x539
553D
Nudist Beach
binary search
,
graphs
,
greedy
2300
x985
553C
Love Triangles
dfs and similar
,
dsu
,
graphs
2200
x1739
553B
Kyoya and Permutation
binary search
,
combinatorics
,
constructive algorithms
,
greedy
,
implementation
,
math
1900
x2097
553A
Kyoya and Colored Balls
combinatorics
,
dp
,
math
1500
x8402
552E
Vanya and Brackets
brute force
,
dp
,
expression parsing
,
greedy
,
implementation
,
strings
2100
x1411
552D
Vanya and Triangles
brute force
,
combinatorics
,
data structures
,
geometry
,
math
,
sortings
1900
x4367
552C
Vanya and Scales
brute force
,
dp
,
greedy
,
math
,
meet-in-the-middle
,
number theory
1900
x5401
552B
Vanya and Books
implementation
,
math
1200
x15236
552A
Vanya and Table
implementation
,
math
1000
x9375
551E
GukiZ and GukiZiana
binary search
,
data structures
,
implementation
2500
x1654
551D
GukiZ and Binary Operations
combinatorics
,
implementation
,
math
,
matrices
,
number theory
2100
x1738
551C
GukiZ hates Boxes
binary search
,
greedy
2200
x3451
551B
ZgukistringZ
brute force
,
constructive algorithms
,
implementation
,
strings
1800
x3760
551A
GukiZ and Contest
brute force
,
implementation
,
sortings
800
x16049
550E
Brackets in Implications
constructive algorithms
,
greedy
,
implementation
,
math
2200
x1378
550D
Regular Bridge
constructive algorithms
,
graphs
,
implementation
1900
x3251
550C
Divisibility by Eight
brute force
,
dp
,
math
1500
x27431
550B
Preparing Olympiad
bitmasks
,
brute force
1400
x19671
550A
Two Substrings
brute force
,
dp
,
greedy
,
implementation
,
strings
1500
x36524
549H
Degenerate Matrix
binary search
,
math
2100
x1787
549G
Happy Line
constructive algorithms
,
greedy
,
sortings
2200
x2399
549F
Yura and Developers
data structures
,
divide and conquer
2800
x851
549E
Sasha Circle
geometry
,
math
2700
x146
549D
Haar Features
greedy
,
implementation
1900
x2127
549C
The Game Of Parity
games
2200
x1719
549B
Looksery Party
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
2300
x1479
549A
Face Detection
implementation
,
strings
900
x9363
548B
Mike and Fun
brute force
,
dp
,
greedy
,
implementation
1400
x8295
548A
Mike and Fax
brute force
,
implementation
,
strings
1100
x9845
547E
Mike and Friends
data structures
,
string suffix structures
,
strings
,
trees
2800
x1949
547D
Mike and Fish
constructive algorithms
,
dfs and similar
,
graphs
2600
x2436
547C
Mike and Foam
bitmasks
,
combinatorics
,
dp
,
math
,
number theory
2300
x2730
547B
Mike and Feet
binary search
,
data structures
,
dp
,
dsu
1900
x8279
547A
Mike and Frog
brute force
,
greedy
,
implementation
,
math
2200
x2318
546E
Soldier and Traveling
flows
,
graphs
,
math
2100
x3494
546D
Soldier and Number Game
constructive algorithms
,
dp
,
math
,
number theory
1700
x11316
546C
Soldier and Cards
brute force
,
dfs and similar
,
games
1400
x17119
546B
Soldier and Badges
brute force
,
greedy
,
implementation
,
sortings
1200
x17275
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x169614
545E
Paths and Trees
graphs
,
greedy
,
shortest paths
2000
x4411
545D
Queue
greedy
,
implementation
,
sortings
1300
x24212
545C
Woodcutters
dp
,
greedy
1500
x26393
545B
Equidistant String
greedy
1100
x11447
545A
Toy Cars
implementation
900
x11448
544B
Sea and Islands
constructive algorithms
,
implementation
1400
x7840
544A
Set of Strings
implementation
,
strings
1100
x7771
543E
Listening to Music
constructive algorithms
,
data structures
3200
x281
543D
Road Improvement
dp
,
trees
2300
x2554
543C
Remembering Strings
bitmasks
,
dp
2500
x1362
543B
Destroying Roads
constructive algorithms
,
graphs
,
shortest paths
2100
x3847
543A
Writing Code
dp
1800
x7707
542F
Quest
dp
,
greedy
2100
x786
542E
Playing on Graph
graphs
,
shortest paths
2600
x810
542D
Superhero's Job
dfs and similar
,
dp
,
hashing
,
math
,
number theory
2600
x499
542C
Idempotent functions
constructive algorithms
,
graphs
,
math
2000
x1101
542B
Duck Hunt
data structures
3100
x183
542A
Place Your Ad Here
data structures
,
sortings
2400
x522
540E
Infinite Inversions
binary search
,
data structures
,
implementation
,
sortings
,
trees
2100
x2016
540D
Bad Luck Island
dp
,
probabilities
1900
x5202
540C
Ice Cave
dfs and similar
2000
x7053
540B
School Marks
greedy
,
implementation
1700
x4612
540A
Combination Lock
implementation
800
x31693
538H
Summer Dichotomy
2-sat
,
data structures
,
dfs and similar
,
greedy
3200
x630
538G
Berserk Robot
constructive algorithms
,
math
,
sortings
3100
x444
538F
A Heap of Heaps
brute force
,
data structures
,
math
,
sortings
2200
x1502
538E
Demiurges Play Again
dfs and similar
,
dp
,
math
,
trees
2200
x1502
538D
Weird Chess
brute force
,
constructive algorithms
,
implementation
1800
x2407
538C
Tourist's Notes
binary search
,
brute force
,
greedy
,
implementation
,
math
1600
x5764
538B
Quasi Binary
constructive algorithms
,
dp
,
greedy
,
implementation
1400
x17658
538A
Cutting Banner
brute force
,
implementation
1400
x7080
536E
Tavas on the Path
data structures
,
divide and conquer
,
trees
3100
x374
536D
Tavas in Kansas
dp
,
games
2900
x712
535E
Tavas and Pashmaks
geometry
,
math
2600
x799
535D
Tavas and Malekas
greedy
,
hashing
,
string suffix structures
,
strings
1900
x3798
535C
Tavas and Karafs
binary search
,
greedy
,
math
1900
x3709
535B
Tavas and SaDDas
bitmasks
,
brute force
,
combinatorics
,
implementation
1100
x21744
535A
Tavas and Nafas
brute force
,
implementation
1000
x11877
534F
Simplified Nonogram
bitmasks
,
dp
,
hashing
,
meet-in-the-middle
2400
x445
534E
Berland Local Positioning System
constructive algorithms
,
greedy
,
hashing
,
implementation
2400
x344
534D
Handshakes
binary search
,
constructive algorithms
,
data structures
,
greedy
1900
x2377
534C
Polycarpus' Dice
math
1600
x4939
534B
Covered Path
dp
,
greedy
,
math
1400
x9935
534A
Exam
constructive algorithms
,
implementation
,
math
1100
x12066
533F
Encoding
hashing
,
string suffix structures
,
strings
2400
x868
533E
Correcting Mistakes
constructive algorithms
,
dp
,
greedy
,
hashing
,
strings
,
two pointers
1800
x2226
533D
Landmarks
data structures
,
dp
3000
x217
533C
Board Game
games
,
greedy
,
implementation
,
math
1700
x2163
533B
Work Group
dfs and similar
,
dp
,
graphs
,
strings
,
trees
2000
x2309
533A
Berland Miners
binary search
,
data structures
,
dfs and similar
,
greedy
,
trees
3000
x375
530I
Different variables
*special problem
2500
x44
530H
Points in triangle
*special problem
,
geometry
2100
x120
530G
Levenshtein distance
*special problem
2100
x148
530F
Jumping frogs
*special problem
2100
x98
530E
Sum and product
*special problem
1700
x303
530D
Set subtraction
*special problem
1600
x447
530C
Diophantine equation
*special problem
1500
x541
530B
String inside out
*special problem
1600
x538
530A
Quadratic equation
*special problem
1500
x669
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