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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
11:10:11
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Difficulty:
—
greedy
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
1346F
Dune II: Battle For Arrakis
*special problem
,
data structures
,
greedy
,
math
2000
x228
1346D
Constructing the Dungeon
*special problem
,
graphs
,
greedy
1600
x506
1346C
Spring Cleaning
*special problem
,
greedy
,
sortings
1600
x608
1346B
Boot Camp
*special problem
,
greedy
1400
x1211
1344D
Résumé Review
binary search
,
greedy
,
math
2700
x1172
1343F
Restore the Permutation by Sorted Segments
brute force
,
constructive algorithms
,
data structures
,
greedy
,
implementation
2400
x1272
1343E
Weights Distributing
brute force
,
graphs
,
greedy
,
shortest paths
,
sortings
2100
x5225
1343D
Constant Palindrome Sum
brute force
,
data structures
,
greedy
,
two pointers
1700
x12766
1343C
Alternating Subsequence
dp
,
greedy
,
two pointers
1200
x38755
1342D
Multiple Testcases
binary search
,
constructive algorithms
,
data structures
,
greedy
,
sortings
,
two pointers
1900
x6128
1342A
Road To Zero
greedy
,
math
1000
x40967
1341B
Nastya and Door
greedy
,
implementation
1300
x19758
1340B
Nastya and Scoreboard
bitmasks
,
dp
,
graphs
,
greedy
1700
x7875
1340A
Nastya and Strange Generator
brute force
,
data structures
,
greedy
,
implementation
1500
x13433
1338B
Edge Weight Assignment
bitmasks
,
constructive algorithms
,
dfs and similar
,
greedy
,
math
,
trees
1800
x8519
1338A
Powered Addition
greedy
,
math
1500
x24350
1337B
Kana and Dragon Quest game
greedy
,
implementation
,
math
900
x34448
1336B
Xenia and Colorful Gems
binary search
,
greedy
,
math
,
sortings
,
two pointers
1700
x11419
1336A
Linova and Kingdom
dfs and similar
,
dp
,
greedy
,
sortings
,
trees
1600
x20617
1335F
Robots on a Grid
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
matrices
2200
x2199
1335C
Two Teams Composing
binary search
,
greedy
,
implementation
,
sortings
1100
x34964
1334F
Strange Function
binary search
,
data structures
,
dp
,
greedy
2500
x1324
1334E
Divisor Paths
combinatorics
,
graphs
,
greedy
,
math
,
number theory
2200
x2854
1334D
Minimum Euler Cycle
constructive algorithms
,
graphs
,
greedy
,
implementation
1800
x7345
1334C
Circle of Monsters
brute force
,
constructive algorithms
,
greedy
,
math
1600
x16735
1334B
Middle Class
greedy
,
sortings
1100
x25969
1333F
Kate and imperfection
greedy
,
implementation
,
math
,
number theory
,
sortings
,
two pointers
2200
x4286
1333D
Challenges in school №41
brute force
,
constructive algorithms
,
games
,
graphs
,
greedy
,
implementation
,
sortings
2100
x3950
1333B
Kind Anton
greedy
,
implementation
1100
x21657
1332C
K-Complete Word
dfs and similar
,
dsu
,
greedy
,
implementation
,
strings
1500
x16830
1332B
Composite Coloring
brute force
,
constructive algorithms
,
greedy
,
math
,
number theory
1400
x17680
1332A
Exercising Walk
greedy
,
implementation
,
math
1100
x19440
1329E
Dreamoon Loves AA
binary search
,
greedy
3300
x186
1329C
Drazil Likes Heap
constructive algorithms
,
data structures
,
greedy
,
implementation
2400
x1716
1329A
Dreamoon Likes Coloring
constructive algorithms
,
greedy
,
implementation
,
math
1800
x9182
1328F
Make k Equal
greedy
2200
x3260
1328D
Carousel
constructive algorithms
,
dp
,
graphs
,
greedy
,
math
1800
x13293
1328C
Ternary XOR
greedy
,
implementation
1200
x30667
1327B
Princesses and Princes
brute force
,
graphs
,
greedy
1200
x18754
1326D2
Prefix-Suffix Palindrome (Hard version)
binary search
,
greedy
,
hashing
,
string suffix structures
,
strings
1800
x10254
1326C
Permutation Partitions
combinatorics
,
greedy
,
math
1300
x15682
1325F
Ehab's Last Theorem
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
2500
x2000
1325D
Ehab the Xorcist
bitmasks
,
constructive algorithms
,
greedy
,
number theory
1700
x12196
1325C
Ehab and Path-etic MEXs
constructive algorithms
,
dfs and similar
,
greedy
,
trees
1500
x13797
1325B
CopyCopyCopyCopyCopy
greedy
,
implementation
800
x36236
1325A
EhAb AnD gCd
constructive algorithms
,
greedy
,
number theory
800
x40548
1324C
Frog Jumps
binary search
,
data structures
,
dfs and similar
,
greedy
,
implementation
1100
x28150
1323B
Count Subrectangles
binary search
,
greedy
,
implementation
1500
x9103
1323A
Even Subset Sum Problem
brute force
,
dp
,
greedy
,
implementation
800
x19880
1322A
Unusual Competitions
greedy
1300
x12458
1321C
Remove Adjacent
brute force
,
constructive algorithms
,
greedy
,
strings
1600
x9885
1321A
Contest for Robots
greedy
900
x14346
1320A
Journey Planning
data structures
,
dp
,
greedy
,
math
,
sortings
1400
x16609
1316E
Team Building
bitmasks
,
dp
,
greedy
,
sortings
2300
x4175
1315C
Restoring Permutation
greedy
1200
x10112
1315B
Homecoming
binary search
,
dp
,
greedy
,
strings
1300
x9230
1313C2
Skyscrapers (hard version)
data structures
,
dp
,
greedy
1900
x6554
1313C1
Skyscrapers (easy version)
brute force
,
data structures
,
dp
,
greedy
1500
x10480
1313B
Different Rules
constructive algorithms
,
greedy
,
implementation
,
math
1700
x6715
1313A
Fast Food Restaurant
brute force
,
greedy
,
implementation
900
x15568
1312E
Array Shrinking
dp
,
greedy
2100
x6052
1312C
Adding Powers
bitmasks
,
greedy
,
implementation
,
math
,
number theory
,
ternary search
1400
x16660
1312A
Two Regular Polygons
geometry
,
greedy
,
math
,
number theory
800
x26039
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x42357
1310A
Recommendations
data structures
,
greedy
,
sortings
1700
x5191
1307E
Cow and Treats
binary search
,
combinatorics
,
dp
,
greedy
,
implementation
,
math
2500
x1287
1307D
Cow and Fields
binary search
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
,
sortings
1900
x6464
1307B
Cow and Friend
geometry
,
greedy
,
math
1300
x13331
1307A
Cow and Haybales
greedy
,
implementation
800
x14997
1305H
Kuroni the Private Tutor
binary search
,
greedy
3500
x121
1305E
Kuroni and the Score Distribution
constructive algorithms
,
greedy
,
implementation
,
math
2200
x3137
1305B
Kuroni and Simple Strings
constructive algorithms
,
greedy
,
strings
,
two pointers
1200
x11803
1305A
Kuroni and the Gifts
brute force
,
constructive algorithms
,
greedy
,
sortings
800
x14139
1304F2
Animal Observation (hard version)
data structures
,
dp
,
greedy
2400
x1557
1304D
Shortest and Longest LIS
constructive algorithms
,
graphs
,
greedy
,
two pointers
1800
x6354
1304C
Air Conditioner
dp
,
greedy
,
implementation
,
sortings
,
two pointers
1500
x16487
1304B
Longest Palindrome
brute force
,
constructive algorithms
,
greedy
,
implementation
,
strings
1100
x17950
1303D
Fill The Bag
bitmasks
,
greedy
1900
x7174
1303C
Perfect Keyboard
dfs and similar
,
greedy
,
implementation
1600
x12215
1301C
Ayoub's function
binary search
,
combinatorics
,
greedy
,
math
,
strings
1700
x9385
1301B
Motarack's Birthday
binary search
,
greedy
,
ternary search
1500
x14342
1300B
Assigning to Classes
greedy
,
implementation
,
sortings
1000
x23698
1299C
Water Balance
data structures
,
geometry
,
greedy
2100
x3971
1299A
Anu Has a Function
brute force
,
greedy
,
math
1500
x12071
1297F
Movie Fan
*special problem
,
data structures
,
greedy
,
implementation
,
sortings
x117
1297D
Bonus Distribution
*special problem
,
binary search
,
greedy
,
sortings
x262
1297C
Dream Team
*special problem
,
greedy
x400
1296F
Berland Beauty
constructive algorithms
,
dfs and similar
,
greedy
,
sortings
,
trees
2100
x2918
1296E1
String Coloring (easy version)
constructive algorithms
,
dp
,
graphs
,
greedy
,
sortings
1800
x7536
1296D
Fight with Monsters
greedy
,
sortings
1500
x14401
1295C
Obtain The String
dp
,
greedy
,
strings
1600
x13015
1295A
Display The Number
greedy
900
x22946
1294F
Three Paths on a Tree
dfs and similar
,
dp
,
greedy
,
trees
2000
x5867
1294E
Obtain a Permutation
greedy
,
implementation
,
math
1900
x4965
1294D
MEX maximizing
data structures
,
greedy
,
implementation
,
math
1600
x11817
1294C
Product of Three Numbers
greedy
,
math
,
number theory
1300
x35399
1293B
JOE is on TV!
combinatorics
,
greedy
,
math
1000
x21312
1292E
Rin and The Unknown Flower
constructive algorithms
,
greedy
,
interactive
,
math
3500
x370
1292D
Chaotic V.
dp
,
graphs
,
greedy
,
math
,
number theory
,
trees
2700
x820
1292C
Xenon's Attack on the Gangs
combinatorics
,
dfs and similar
,
dp
,
greedy
,
trees
2300
x2086
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