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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
22:40:57
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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
Standings
Custom test
Problems
#
Name
165A
Supercentral Point
implementation
1000
x23692
162A
Pentagonal numbers
*special problem
,
implementation
1100
x805
160C
Find Pair
implementation
,
math
,
sortings
1700
x3458
159A
Friends or Not
*special problem
,
greedy
,
implementation
1400
x2485
158C
Cd and pwd commands
*special problem
,
data structures
,
implementation
1400
x9267
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x87874
158A
Next Round
*special problem
,
implementation
800
x253783
156B
Suspects
constructive algorithms
,
data structures
,
implementation
1600
x2234
152B
Steps
binary search
,
implementation
1300
x6753
152A
Marks
implementation
900
x16880
151B
Phone Numbers
implementation
,
strings
1200
x6390
151A
Soft Drinking
implementation
,
math
800
x74705
149B
Martian Clock
implementation
1600
x2264
149A
Business trip
greedy
,
implementation
,
sortings
900
x40137
148B
Escape
implementation
,
math
1500
x5513
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x93938
147A
Punctuation
implementation
,
strings
1300
x3658
146B
Lucky Mask
brute force
,
implementation
1300
x4410
146A
Lucky Ticket
implementation
800
x15177
145D
Lucky Pair
combinatorics
,
data structures
,
implementation
2900
x243
145A
Lucky Conversion
greedy
,
implementation
1200
x7174
144C
Anagram Search
implementation
,
strings
1500
x4017
144B
Meeting
implementation
1300
x5287
144A
Arrival of the General
implementation
800
x97443
143B
Help Kingdom of Far Far Away 2
implementation
,
strings
1200
x4996
142B
Help General
constructive algorithms
,
greedy
,
implementation
1800
x2219
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x84304
140B
New Year Cards
brute force
,
greedy
,
implementation
1800
x1683
139B
Wallpaper
implementation
,
math
1600
x1311
139A
Petr and Book
implementation
1000
x31560
138A
Literature Lesson
implementation
1600
x2395
137E
Last Chance
data structures
,
implementation
,
strings
2000
x1242
137A
Postcards and photos
implementation
900
x7218
136B
Ternary Logic
implementation
,
math
1100
x4881
136A
Presents
implementation
800
x119535
135D
Cycle
brute force
,
dfs and similar
,
implementation
2500
x301
135A
Replacement
greedy
,
implementation
,
sortings
1300
x7647
134A
Average Numbers
brute force
,
implementation
1200
x4002
133B
Unary
implementation
1200
x8826
133A
HQ9+
implementation
900
x106639
132B
Piet
implementation
2100
x663
132A
Turing Tape
implementation
1300
x2785
131B
Opposites Attract
implementation
,
math
1200
x7056
131A
cAPS lOCK
implementation
,
strings
1000
x86539
130B
Gnikool Ssalg
*special problem
,
implementation
,
strings
1400
x532
130A
Hexagonal numbers
*special problem
,
implementation
900
x1633
129B
Students and Shoelaces
brute force
,
dfs and similar
,
graphs
,
implementation
1200
x12363
129A
Cookies
implementation
900
x22870
128D
Numbers
constructive algorithms
,
implementation
2000
x1147
128B
String
brute force
,
constructive algorithms
,
hashing
,
implementation
,
string suffix structures
,
strings
2100
x2599
127B
Canvas Frames
implementation
1000
x8898
125B
Simple XML
implementation
1000
x2950
124B
Permutations
brute force
,
combinatorics
,
implementation
1400
x3949
123A
Prime Permutation
implementation
,
number theory
,
strings
1300
x3639
122B
Lucky Substring
brute force
,
implementation
1000
x12391
121D
Lucky Segments
binary search
,
implementation
,
two pointers
2500
x277
121A
Lucky Sum
implementation
1100
x9281
120G
Boom
implementation
1800
x690
120C
Winnie-the-Pooh and honey
implementation
,
math
1100
x3681
120B
Quiz League
implementation
1100
x3440
120A
Elevator
brute force
,
implementation
,
math
1000
x4840
119B
Before Exam
constructive algorithms
,
implementation
,
sortings
1900
x1079
119A
Epic Game
implementation
800
x27530
118B
Present from Lena
constructive algorithms
,
implementation
1000
x30256
118A
String Task
implementation
,
strings
1000
x195349
117E
Tree or not Tree
data structures
,
divide and conquer
,
implementation
,
trees
2900
x349
117A
Elevator
implementation
,
math
1300
x2026
116B
Little Pigs and Wolves
greedy
,
implementation
1100
x13795
116A
Tram
implementation
800
x144394
113E
Sleeping
combinatorics
,
implementation
,
math
2700
x119
113A
Grammar Lessons
implementation
,
strings
1600
x2304
112B
Petya and Square
implementation
,
math
1200
x4182
112A
Petya and Strings
implementation
,
strings
800
x229121
110A
Nearly Lucky Number
implementation
800
x158035
109A
Lucky Sum of Digits
brute force
,
implementation
1000
x17760
108A
Palindromic Times
implementation
,
strings
1000
x9404
106D
Treasure Island
brute force
,
implementation
1700
x1364
106B
Choosing Laptop
brute force
,
implementation
1000
x6129
106A
Card Game
implementation
1000
x7638
105D
Entertaining Geodetics
brute force
,
dsu
,
implementation
2700
x139
105C
Item World
brute force
,
implementation
,
sortings
2200
x344
105A
Transmigration
implementation
1700
x1844
104A
Blackjack
implementation
800
x15476
103A
Testing Pants for Sadness
greedy
,
implementation
,
math
1100
x6012
102B
Sum of Digits
implementation
1000
x27124
101C
Vectors
implementation
,
math
2000
x703
100H
Battleship
*special problem
,
dfs and similar
,
implementation
2100
x79
100G
Name the album
*special problem
,
data structures
,
implementation
1800
x124
100F
Polynom
*special problem
,
implementation
1800
x135
100C
A+B
*special problem
,
implementation
1400
x537
100B
Friendly Numbers
*special problem
,
implementation
1500
x546
100A
Carpeting the Room
*special problem
,
implementation
1100
x930
99B
Help Chef Gerasim
implementation
,
sortings
1300
x2996
98B
Help King
implementation
,
probabilities
,
trees
2200
x128
98A
Help Victoria the Wise
brute force
,
implementation
1700
x1216
97D
Robot in Basement
bitmasks
,
brute force
,
implementation
2700
x248
97A
Domino
brute force
,
implementation
2400
x266
96A
Football
implementation
,
strings
900
x160866
95A
Hockey
implementation
,
strings
1600
x1681
94B
Friends
graphs
,
implementation
,
math
1300
x4703
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