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Before contest
Codeforces Round 1002 (Div. 2)
44:40:51
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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
135C
Zero-One
constructive algorithms
,
games
,
greedy
1900
x1357
135B
Rectangle and Square
brute force
,
geometry
,
math
1600
x2404
134C
Swaps
constructive algorithms
,
graphs
,
greedy
2200
x477
134B
Pairs of Numbers
brute force
,
dfs and similar
,
math
,
number theory
1900
x2111
132E
Bits of merry old England
flows
,
graphs
2700
x542
132D
Constants in the language of Shakespeare
constructive algorithms
,
dp
,
greedy
2100
x622
132C
Logo Turtle
dp
1800
x2371
132B
Piet
implementation
2100
x667
131F
Present to Mom
binary search
,
two pointers
2000
x657
131E
Yet Another Task with Queens
sortings
1700
x1871
131D
Subway
dfs and similar
,
graphs
1600
x4778
131C
The World is a Theatre
combinatorics
,
math
1400
x11478
130J
Date calculation
*special problem
1800
x343
130I
Array sorting
*special problem
,
sortings
2300
x171
130H
Balanced brackets
*special problem
1600
x620
130G
CAPS LOCK ON
*special problem
1700
x290
130F
Prime factorization
*special problem
1600
x281
130E
Tribonacci numbers
*special problem
1600
x300
130D
Exponentiation
*special problem
1500
x400
130C
Decimal sum
*special problem
1500
x510
130B
Gnikool Ssalg
*special problem
,
implementation
,
strings
1400
x541
128E
Birthday
geometry
,
math
2900
x100
128D
Numbers
constructive algorithms
,
implementation
2000
x1164
128C
Games with Rectangle
combinatorics
,
dp
2000
x3008
128B
String
brute force
,
constructive algorithms
,
hashing
,
implementation
,
string suffix structures
,
strings
2100
x2629
128A
Statues
dfs and similar
1500
x3235
126E
Pills
brute force
,
flows
2900
x89
126D
Fibonacci Sums
dp
,
math
2300
x852
126C
E-reader Display
constructive algorithms
,
greedy
2000
x748
126B
Password
binary search
,
dp
,
hashing
,
string suffix structures
,
strings
1700
x20243
126A
Hot Bath
binary search
,
brute force
,
math
1900
x1446
125E
MST Company
binary search
,
graphs
2400
x1126
125D
Two progressions
constructive algorithms
,
greedy
2200
x421
125C
Hobbits' Party
constructive algorithms
,
greedy
1600
x940
125A
Measuring Lengths in Baden
math
1400
x2767
124B
Permutations
brute force
,
combinatorics
,
implementation
1400
x4068
123E
Maze
dfs and similar
,
dp
,
probabilities
,
trees
2500
x734
123D
String
string suffix structures
2300
x1238
123C
Brackets
combinatorics
,
dp
,
greedy
2300
x624
123B
Squares
math
1800
x1144
121E
Lucky Array
data structures
2400
x1766
121D
Lucky Segments
binary search
,
implementation
,
two pointers
2500
x289
121C
Lucky Permutation
brute force
,
combinatorics
,
number theory
1900
x1294
121B
Lucky Transformation
strings
1500
x2598
120J
Minimum Sum
divide and conquer
,
geometry
,
sortings
1900
x954
120I
Luck is in Numbers
greedy
2200
x308
120H
Brevity is Soul of Wit
graph matchings
1800
x1432
120G
Boom
implementation
1800
x691
120F
Spiders
dp
,
greedy
,
trees
1400
x3690
120E
Put Knight!
games
,
math
1400
x2770
120D
Three Sons
brute force
1400
x1949
119E
Alternative Reality
geometry
2400
x98
119D
String Transformation
hashing
,
strings
2500
x515
119C
Education Reform
dp
2000
x967
119B
Before Exam
constructive algorithms
,
implementation
,
sortings
1900
x1084
118E
Bertown roads
dfs and similar
,
graphs
2000
x6909
118D
Caesar's Legions
dp
1700
x17906
118C
Fancy Number
brute force
,
greedy
,
sortings
,
strings
1900
x2620
117E
Tree or not Tree
data structures
,
divide and conquer
,
implementation
,
trees
2900
x357
117D
Not Quick Transformation
divide and conquer
,
math
2500
x343
117C
Cycle
dfs and similar
,
graphs
2000
x2686
117B
Very Interesting Game
brute force
,
number theory
1800
x1629
115E
Linear Kingdom Races
data structures
,
dp
2400
x1707
115D
Unambiguous Arithmetic Expression
dp
,
expression parsing
2600
x410
115C
Plumber
math
2200
x615
115B
Lawnmower
greedy
,
sortings
1500
x2636
114B
PFAST Inc.
bitmasks
,
brute force
,
graphs
1500
x3779
113E
Sleeping
combinatorics
,
implementation
,
math
2700
x122
113D
Museum
math
,
matrices
,
probabilities
2700
x692
113C
Double Happiness
brute force
,
math
,
number theory
2200
x1278
113B
Petr#
brute force
,
data structures
,
hashing
,
strings
2000
x2911
113A
Grammar Lessons
implementation
,
strings
1600
x2318
111E
Petya and Rectangle
2900
x68
111D
Petya and Coloring
combinatorics
,
dp
2300
x797
111C
Petya and Spiders
bitmasks
,
dp
,
dsu
2100
x1414
111B
Petya and Divisors
binary search
,
data structures
,
number theory
1900
x3752
111A
Petya and Inequiations
greedy
1400
x4833
109E
Lucky Interval
brute force
,
math
2700
x106
109D
Lucky Sorting
constructive algorithms
,
sortings
2000
x824
109C
Lucky Tree
dp
,
dsu
,
trees
1900
x3662
109B
Lucky Probability
brute force
,
probabilities
1900
x1572
108B
Datatypes
math
,
sortings
1400
x2500
107E
Darts
geometry
,
probabilities
2700
x141
107D
Crime Management
dp
,
graphs
,
matrices
2400
x435
107C
Arrangement
bitmasks
,
dp
2400
x396
107B
Basketball Team
combinatorics
,
dp
,
math
,
probabilities
1600
x3603
107A
Dorm Water Supply
dfs and similar
,
graphs
1400
x5198
106E
Space Rescuers
geometry
,
ternary search
2100
x889
106D
Treasure Island
brute force
,
implementation
1700
x1373
106C
Buns
dp
1700
x6162
105E
Lift and Throw
brute force
2500
x194
105D
Entertaining Geodetics
brute force
,
dsu
,
implementation
2700
x142
105C
Item World
brute force
,
implementation
,
sortings
2200
x346
105B
Dark Assembly
brute force
,
probabilities
1800
x824
105A
Transmigration
implementation
1700
x1848
103E
Buying Sets
flows
,
graph matchings
2900
x901
103D
Time to Raid Cowavans
brute force
,
data structures
,
sortings
2100
x2158
103C
Russian Roulette
constructive algorithms
,
greedy
1900
x969
103B
Cthulhu
dfs and similar
,
dsu
,
graphs
1500
x9112
101E
Candies and Stones
divide and conquer
,
dp
2500
x523
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