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Before contest
Codeforces Round #956 (Div. 2) and ByteRace 2024
40:56:52
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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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Custom test
Problems
#
Name
182E
Wooden Fence
dp
1800
x1440
182D
Common Divisors
brute force
,
hashing
,
implementation
,
math
,
strings
1400
x7882
182C
Optimal Sum
data structures
,
greedy
2000
x713
182A
Battlefield
geometry
,
graphs
,
implementation
,
shortest paths
2200
x280
180E
Cubes
binary search
,
dp
,
two pointers
1800
x1739
180D
Name
greedy
,
strings
1900
x717
180C
Letter
dp
1400
x7177
180B
Divisibility Rules
math
,
number theory
2300
x329
180A
Defragmentation
implementation
1800
x526
178F3
Representative Sampling
2500
x411
178F2
Representative Sampling
dp
,
sortings
,
strings
2200
x322
178F1
Representative Sampling
1800
x378
178E3
The Beaver's Problem - 2
2300
x201
178E2
The Beaver's Problem - 2
2000
x230
178E1
The Beaver's Problem - 2
1900
x289
178D3
Magic Squares
2100
x240
178D2
Magic Squares
1900
x264
178D1
Magic Squares
1500
x618
178C3
Smart Beaver and Resolving Collisions
2000
x298
178C2
Smart Beaver and Resolving Collisions
1900
x288
178C1
Smart Beaver and Resolving Collisions
1600
x474
178B3
Greedy Merchants
1800
x1135
178B2
Greedy Merchants
1600
x652
178B1
Greedy Merchants
1600
x736
177G2
Fibonacci Strings
matrices
,
strings
2600
x176
177G1
Fibonacci Strings
strings
2400
x168
177F2
Script Generation
2300
x201
177F1
Script Generation
1800
x296
177E2
Space Voyage
binary search
1900
x410
177E1
Space Voyage
binary search
1700
x588
177D2
Encrypting Messages
data structures
1500
x1830
177C2
Party
brute force
,
dfs and similar
,
dsu
,
graphs
1500
x2482
177C1
Party
dfs and similar
,
dsu
,
graphs
1500
x2492
176E
Archaeology
data structures
,
dfs and similar
,
trees
3100
x1088
176D
Hyper String
dp
2500
x305
176C
Playing with Superglue
combinatorics
,
constructive algorithms
2000
x469
176B
Word Cut
dp
1700
x1733
175F
Gnomes of Might and Magic
data structures
,
graphs
,
implementation
,
shortest paths
3000
x65
175E
Power Defence
brute force
,
dp
,
geometry
,
greedy
2600
x261
175D
Plane of Tanks: Duel
brute force
,
dp
,
math
,
probabilities
2400
x296
175C
Geometry Horse
greedy
,
implementation
,
sortings
,
two pointers
1600
x1301
175B
Plane of Tanks: Pro
implementation
1400
x1384
175A
Robot Bicorn Attack
brute force
,
implementation
1400
x2359
174C
Range Increments
data structures
,
greedy
1800
x1073
174B
File List
dp
,
greedy
,
implementation
1400
x2209
173E
Camping Groups
data structures
,
sortings
2600
x539
173D
Deputies
constructive algorithms
,
graphs
,
greedy
,
implementation
2500
x247
173C
Spiral Maximum
brute force
,
dp
1900
x966
173B
Chamber of Secrets
dfs and similar
,
shortest paths
1800
x2924
172E
BHTML+BCSS
*special problem
,
dfs and similar
,
expression parsing
2200
x269
172D
Calendar Reform
*special problem
,
number theory
1500
x1385
172C
Bus
*special problem
,
implementation
,
sortings
1500
x1132
171H
A polyline
*special problem
,
implementation
1700
x272
171G
Mysterious numbers - 2
*special problem
1600
x907
171F
ucyhf
*special problem
,
brute force
,
implementation
,
number theory
1600
x1260
171E
MYSTERIOUS LANGUAGE
*special problem
2000
x1431
171C
A Piece of Cake
*special problem
,
implementation
2000
x1067
168B
Wizards and Minimal Spell
implementation
,
strings
1700
x1206
167E
Wizards and Bets
dfs and similar
,
graphs
,
math
,
matrices
2900
x550
167D
Wizards and Roads
data structures
,
divide and conquer
,
graph matchings
,
graphs
,
greedy
3000
x192
167C
Wizards and Numbers
games
,
math
2300
x658
167B
Wizards and Huge Prize
dp
,
math
,
probabilities
1800
x2113
167A
Wizards and Trolleybuses
implementation
,
math
1600
x2017
166E
Tetrahedron
dp
,
math
,
matrices
1500
x20351
166D
Shoe Store
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
2500
x349
166C
Median
greedy
,
math
,
sortings
1500
x6391
166B
Polygons
geometry
,
sortings
2100
x2357
165E
Compatible Numbers
bitmasks
,
brute force
,
dfs and similar
,
dp
2200
x6372
165D
Beard Graph
data structures
,
dsu
,
trees
2100
x1602
165C
Another Problem on Strings
binary search
,
brute force
,
dp
,
math
,
strings
,
two pointers
1600
x12008
165B
Burning Midnight Oil
binary search
,
implementation
1500
x16998
164E
Polycarpus and Tasks
3100
x67
164D
Minimum Diameter
binary search
,
brute force
3100
x230
164C
Machine Programming
flows
,
graphs
2400
x887
164B
Ancient Berland Hieroglyphs
two pointers
2000
x451
164A
Variable, or There and Back Again
dfs and similar
,
graphs
1700
x987
163E
e-Government
data structures
,
dfs and similar
,
dp
,
strings
,
trees
2800
x1550
163D
Large Refrigerator
brute force
2900
x483
163C
Conveyor
sortings
,
two pointers
2100
x538
163B
Lemmings
binary search
2000
x1048
163A
Substring and Subsequence
dp
1700
x2637
162J
Brackets
*special problem
1800
x91
162I
Truncatable primes
*special problem
2000
x75
162H
Alternating case
*special problem
1800
x215
162G
Non-decimal sum
*special problem
2000
x59
162F
Factorial zeros
*special problem
1800
x197
162E
HQ9+
*special problem
1800
x175
162D
Remove digits
*special problem
1900
x227
162C
Prime factorization
*special problem
1800
x779
162B
Binary notation
*special problem
1800
x311
161E
Polycarpus the Safecracker
brute force
,
dp
2500
x464
161D
Distance in Tree
dfs and similar
,
dp
,
trees
1800
x13984
161C
Abracadabra
divide and conquer
2400
x642
161B
Discounts
constructive algorithms
,
greedy
,
sortings
1700
x1932
160E
Buses and People
binary search
,
data structures
,
sortings
2400
x579
160D
Edges in MST
dfs and similar
,
dsu
,
graphs
,
sortings
2300
x2409
160C
Find Pair
implementation
,
math
,
sortings
1700
x3393
159E
Zebra Tower
*special problem
,
data structures
,
greedy
,
sortings
1700
x994
159D
Palindrome pairs
*special problem
,
brute force
,
dp
,
strings
1500
x4281
159C
String Manipulation 1.0
*special problem
,
binary search
,
brute force
,
data structures
,
strings
1400
x2942
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