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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
22:09:38
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→ Filter Problems
Difficulty:
—
implementation
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
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Status
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Custom test
Problems
#
Name
248A
Cupboards
implementation
800
x22555
245F
Log Stream Analysis
binary search
,
brute force
,
implementation
,
strings
2000
x878
245E
Mishap in Club
greedy
,
implementation
1400
x3297
245B
Internet Address
implementation
,
strings
1100
x5238
245A
System Administrator
implementation
800
x8495
244A
Dividing Orange
implementation
900
x7964
243C
Colorado Potato Beetle
dfs and similar
,
implementation
2200
x530
242B
Big Segment
implementation
,
sortings
1100
x15845
242A
Heads or Tails
brute force
,
implementation
1100
x6393
241F
Race
brute force
,
implementation
2300
x263
241C
Mirror Box
geometry
,
implementation
2000
x512
239B
Easy Tape Programming
brute force
,
implementation
1500
x1374
239A
Two Bags of Potatoes
greedy
,
implementation
,
math
1200
x19028
238D
Tape Programming
data structures
,
implementation
2900
x251
237B
Young Table
implementation
,
sortings
1500
x2241
237A
Free Cash
implementation
1000
x26965
236B
Easy Number Challenge
implementation
,
number theory
1300
x14432
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x215100
235E
Number Challenge
combinatorics
,
dp
,
implementation
,
math
,
number theory
2600
x779
234G
Practice
constructive algorithms
,
divide and conquer
,
implementation
1600
x1480
234E
Champions' League
implementation
1600
x1002
234D
Cinema
implementation
1600
x1541
234C
Weather
dp
,
implementation
1300
x5565
234A
Lefthanders and Righthanders
implementation
1200
x4476
233A
Perfect Permutation
implementation
,
math
800
x42987
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x76685
228B
Two Tables
brute force
,
implementation
1400
x3469
228A
Is your horseshoe on the other hoof?
implementation
800
x111978
227B
Effective Approach
implementation
1100
x28305
226C
Anniversary
data structures
,
implementation
,
math
,
matrices
,
number theory
2400
x914
225D
Snake
bitmasks
,
dfs and similar
,
graphs
,
implementation
2200
x949
224B
Array
bitmasks
,
implementation
,
two pointers
1500
x7357
223A
Bracket Sequence
data structures
,
expression parsing
,
implementation
1700
x2541
222C
Reducing Fractions
implementation
,
math
,
number theory
,
sortings
1800
x2264
222B
Cosmic Tables
data structures
,
implementation
1300
x6137
222A
Shooshuns and Sequence
brute force
,
implementation
1200
x10842
221B
Little Elephant and Numbers
implementation
1300
x4588
221A
Little Elephant and Function
implementation
,
math
1000
x15307
220A
Little Elephant and Problem
implementation
,
sortings
1300
x12022
219B
Special Offer! Super Price 999 Bourles!
implementation
1400
x5833
219A
k-String
implementation
,
strings
1000
x28078
218B
Airport
implementation
1100
x16573
218A
Mountain Scenery
brute force
,
constructive algorithms
,
implementation
1100
x9513
216B
Forming Teams
dfs and similar
,
implementation
1700
x6403
216A
Tiling with Hexagons
implementation
,
math
1200
x5024
215C
Crosses
brute force
,
implementation
2100
x670
215A
Bicycle Chain
brute force
,
implementation
900
x14600
212B
Polycarpus is Looking for Good Substrings
bitmasks
,
hashing
,
implementation
2300
x335
208D
Prizes, Prizes, more Prizes
implementation
1200
x7600
205A
Little Elephant and Rozdil
brute force
,
implementation
900
x22545
204E
Little Elephant and Strings
data structures
,
implementation
,
string suffix structures
,
two pointers
2800
x1171
203D
Hit Ball
geometry
,
implementation
,
math
1700
x1418
203B
Game on Paper
brute force
,
implementation
1300
x2610
203A
Two Problems
brute force
,
implementation
1200
x4184
202A
LLPS
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
strings
800
x17008
200E
Tractor College
implementation
,
math
,
number theory
,
ternary search
2400
x344
200D
Programming Language
binary search
,
brute force
,
expression parsing
,
implementation
1800
x916
200C
Football Championship
brute force
,
implementation
1800
x1060
200B
Drinks
implementation
,
math
800
x118333
199A
Hexadecimal's theorem
brute force
,
constructive algorithms
,
implementation
,
number theory
900
x26753
198A
About Bacteria
implementation
,
math
1700
x3157
195C
Try and Catch
expression parsing
,
implementation
1800
x1145
195B
After Training
data structures
,
implementation
,
math
1300
x5210
194A
Exams
implementation
,
math
900
x9915
192B
Walking in the Rain
brute force
,
implementation
1100
x6288
192A
Funky Numbers
binary search
,
brute force
,
implementation
1300
x10445
188H
Stack
*special problem
,
expression parsing
,
implementation
1800
x266
188G
Array Sorting
*special problem
,
implementation
1600
x334
188F
Binary Notation
*special problem
,
implementation
1400
x301
188E
HQ9+
*special problem
,
implementation
1400
x500
188D
Asterisks
*special problem
,
implementation
1100
x682
188C
LCM
*special problem
,
implementation
,
math
1400
x454
188B
A + Reverse B
*special problem
,
implementation
1300
x736
186A
Comparing Strings
implementation
,
strings
1100
x17143
182D
Common Divisors
brute force
,
hashing
,
implementation
,
math
,
strings
1400
x8102
182B
Vasya's Calendar
implementation
1000
x6949
182A
Battlefield
geometry
,
graphs
,
implementation
,
shortest paths
2200
x288
181A
Series of Crimes
brute force
,
geometry
,
implementation
800
x7212
180F
Mathematical Analysis Rocks!
constructive algorithms
,
implementation
,
math
1200
x2531
180A
Defragmentation
implementation
1800
x541
177A2
Good Matrix Elements
implementation
800
x7374
177A1
Good Matrix Elements
implementation
800
x8780
175F
Gnomes of Might and Magic
data structures
,
graphs
,
implementation
,
shortest paths
3000
x66
175C
Geometry Horse
greedy
,
implementation
,
sortings
,
two pointers
1600
x1320
175B
Plane of Tanks: Pro
implementation
1400
x1427
175A
Robot Bicorn Attack
brute force
,
implementation
1400
x2402
174B
File List
dp
,
greedy
,
implementation
1400
x2253
173D
Deputies
constructive algorithms
,
graphs
,
greedy
,
implementation
2500
x250
173A
Rock-Paper-Scissors
implementation
,
math
1300
x2301
172C
Bus
*special problem
,
implementation
,
sortings
1500
x1147
172B
Pseudorandom Sequence Period
*special problem
,
implementation
,
number theory
1200
x2790
172A
Phone Code
*special problem
,
brute force
,
implementation
800
x6168
171H
A polyline
*special problem
,
implementation
1700
x282
171F
ucyhf
*special problem
,
brute force
,
implementation
,
number theory
1600
x1284
171C
A Piece of Cake
*special problem
,
implementation
2000
x1095
168B
Wizards and Minimal Spell
implementation
,
strings
1700
x1223
168A
Wizards and Demonstration
implementation
,
math
900
x10638
167A
Wizards and Trolleybuses
implementation
,
math
1600
x2044
166A
Rank List
binary search
,
implementation
,
sortings
1100
x17866
165B
Burning Midnight Oil
binary search
,
implementation
1500
x18213
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