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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
21:56:22
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data structures
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
648D
Собачки и миски
data structures
,
greedy
,
sortings
1900
x236
644C
Hostname Aliases
*special problem
,
binary search
,
data structures
,
implementation
,
sortings
,
strings
2100
x922
644B
Processing Queries
*special problem
,
constructive algorithms
,
data structures
,
two pointers
1700
x2705
643G
Choosing Ads
data structures
3200
x1017
641E
Little Artem and Time Machine
data structures
2000
x3319
639F
Bear and Chemistry
data structures
,
dfs and similar
,
graphs
,
trees
3300
x424
639D
Bear and Contribution
data structures
,
greedy
,
sortings
,
two pointers
2400
x969
637D
Running with Obstacles
*special problem
,
data structures
,
dp
,
greedy
1600
x2024
637B
Chat Order
*special problem
,
binary search
,
constructive algorithms
,
data structures
,
sortings
1200
x17074
633H
Fibonacci-ish II
data structures
,
implementation
3100
x601
633G
Yash And Trees
bitmasks
,
data structures
,
dfs and similar
,
math
,
number theory
2800
x782
633E
Startup Funding
binary search
,
constructive algorithms
,
data structures
,
probabilities
,
two pointers
2400
x587
633C
Spy Syndrome 2
data structures
,
dp
,
hashing
,
implementation
,
sortings
,
string suffix structures
,
strings
1900
x2791
631E
Product Sum
data structures
,
dp
,
geometry
2600
x2418
631D
Messenger
data structures
,
hashing
,
implementation
,
string suffix structures
,
strings
2100
x2089
631C
Report
data structures
,
sortings
1700
x3800
629E
Famil Door and Roads
combinatorics
,
data structures
,
dfs and similar
,
dp
,
probabilities
,
trees
2300
x1024
629D
Babaei and Birthday Cake
data structures
,
dp
2000
x4056
628E
Zbazi in Zeydabad
data structures
,
implementation
2300
x897
627C
Package Delivery
data structures
,
divide and conquer
,
greedy
2200
x1176
627B
Factory Repairs
data structures
1700
x2935
626G
Raffles
data structures
,
dp
,
greedy
,
math
3100
x536
625E
Frog Fights
data structures
,
greedy
2800
x348
622C
Not Equal on a Segment
data structures
,
implementation
1700
x6732
620F
Xors on Segments
data structures
,
strings
,
trees
2800
x743
620E
New Year Tree
bitmasks
,
data structures
,
trees
2100
x5717
618E
Robot Arm
data structures
,
geometry
2500
x646
617E
XOR and Favorite Number
data structures
2200
x8548
616F
Expensive Strings
data structures
,
sortings
,
string suffix structures
,
strings
2700
x608
616D
Longest k-Good Segment
binary search
,
data structures
,
two pointers
1600
x9713
612C
Replace To Make Regular Bracket Sequence
data structures
,
expression parsing
,
math
1400
x8189
611E
New Year and Three Musketeers
data structures
,
greedy
,
sortings
2400
x869
610E
Alphabet Permutations
data structures
,
strings
2500
x895
610D
Vika and Segments
constructive algorithms
,
data structures
,
geometry
,
two pointers
2300
x1506
609F
Frogs and mosquitoes
data structures
,
greedy
2500
x1265
609E
Minimum spanning tree for each edge
data structures
,
dfs and similar
,
dsu
,
graphs
,
trees
2100
x7984
607D
Power Tree
data structures
,
trees
2600
x578
605D
Board Game
data structures
,
dfs and similar
2500
x808
605B
Lazy Student
constructive algorithms
,
data structures
,
graphs
1700
x3472
603E
Pastoral Oddities
data structures
,
divide and conquer
,
dsu
,
math
,
trees
3000
x1307
601E
A Museum Robbery
data structures
,
dp
2800
x874
601D
Acyclic Organic Compounds
data structures
,
dfs and similar
,
dsu
,
hashing
,
strings
,
trees
2400
x1159
601B
Lipshitz Sequence
data structures
,
math
2100
x2333
600E
Lomsat gelral
data structures
,
dfs and similar
,
dsu
,
trees
2300
x14259
600B
Queries about less or equal elements
binary search
,
data structures
,
sortings
,
two pointers
1300
x30525
597C
Subsequences
data structures
,
dp
1900
x5088
594D
REQ
data structures
,
number theory
2500
x1638
593D
Happy Tree Party
data structures
,
dfs and similar
,
graphs
,
math
,
trees
2400
x1265
587F
Duff is Mad
data structures
,
strings
3000
x1065
587E
Duff as a Queen
data structures
2900
x723
587C
Duff in the Army
data structures
,
trees
2200
x3980
580E
Kefa and Watch
data structures
,
hashing
,
strings
2500
x2089
577B
Modulo Sum
combinatorics
,
data structures
,
dp
,
two pointers
1900
x12339
576E
Painting Edges
binary search
,
data structures
3300
x1249
575I
Robots protection
data structures
2800
x466
575A
Fibonotci
data structures
,
math
,
matrices
2700
x808
573E
Bear and Bowling
data structures
,
greedy
3200
x1761
573D
Bear and Cavalry
data structures
,
divide and conquer
,
dp
3000
x567
573B
Bear and Blocks
binary search
,
data structures
,
dp
,
math
1600
x5960
572B
Order Book
data structures
,
greedy
,
implementation
,
sortings
1300
x7006
571D
Campus
binary search
,
data structures
,
dsu
,
trees
3100
x683
570C
Replacement
constructive algorithms
,
data structures
,
implementation
1600
x9188
568E
Longest Increasing Subsequence
data structures
,
dp
3000
x600
567D
One-Dimensional Battle Ships
binary search
,
data structures
,
greedy
,
sortings
1700
x4820
567C
Geometric Progression
binary search
,
data structures
,
dp
1700
x9606
566D
Restructuring Company
data structures
,
dsu
1900
x3297
558E
A Simple Task
data structures
,
sortings
,
strings
2300
x6156
558D
Guess Your Way Out! II
data structures
,
implementation
,
sortings
2300
x1151
557E
Ann and Half-Palindrome
data structures
,
dp
,
graphs
,
string suffix structures
,
strings
,
trees
2300
x1091
557C
Arthur and Table
brute force
,
data structures
,
dp
,
greedy
,
math
,
sortings
1900
x4030
555C
Case of Chocolate
data structures
2200
x1970
555B
Case of Fugitive
data structures
,
greedy
,
sortings
2000
x3751
552D
Vanya and Triangles
brute force
,
combinatorics
,
data structures
,
geometry
,
math
,
sortings
1900
x4497
551E
GukiZ and GukiZiana
binary search
,
data structures
,
implementation
2500
x1875
549F
Yura and Developers
data structures
,
divide and conquer
2800
x894
547E
Mike and Friends
data structures
,
string suffix structures
,
strings
,
trees
2800
x2116
547B
Mike and Feet
binary search
,
data structures
,
dp
,
dsu
1900
x8834
543E
Listening to Music
constructive algorithms
,
data structures
3200
x300
542B
Duck Hunt
data structures
3100
x205
542A
Place Your Ad Here
data structures
,
sortings
2400
x575
540E
Infinite Inversions
binary search
,
data structures
,
implementation
,
sortings
,
trees
2100
x2138
538H
Summer Dichotomy
2-sat
,
data structures
,
dfs and similar
,
greedy
3200
x662
538F
A Heap of Heaps
brute force
,
data structures
,
math
,
sortings
2200
x1739
536E
Tavas on the Path
data structures
,
divide and conquer
,
trees
3100
x399
534D
Handshakes
binary search
,
constructive algorithms
,
data structures
,
greedy
1900
x2419
533D
Landmarks
data structures
,
dp
3000
x235
533A
Berland Miners
binary search
,
data structures
,
dfs and similar
,
greedy
,
trees
3000
x392
527D
Clique Problem
data structures
,
dp
,
greedy
,
implementation
,
sortings
1800
x4803
527C
Glass Carving
binary search
,
data structures
,
implementation
1500
x6937
526F
Pudding Monsters
data structures
,
divide and conquer
3000
x2587
525D
Arthur and Walls
constructive algorithms
,
data structures
,
graphs
,
greedy
,
shortest paths
2400
x1791
524F
And Yet Another Bracket Sequence
data structures
,
greedy
,
hashing
,
string suffix structures
,
strings
2700
x535
524E
Rooks and Rectangles
data structures
,
sortings
2400
x1213
523D
Statistics of Recompressing Videos
*special problem
,
data structures
,
implementation
1600
x2348
522D
Closest Equals
*special problem
,
data structures
2000
x3246
522B
Photo to Remember
*special problem
,
data structures
,
dp
,
implementation
1100
x8942
519E
A and B and Lecture Rooms
binary search
,
data structures
,
dfs and similar
,
dp
,
trees
2100
x6955
519D
A and B and Interesting Substrings
data structures
,
dp
,
two pointers
1800
x6399
519B
A and B and Compilation Errors
data structures
,
implementation
,
sortings
1100
x39732
518C
Anya and Smartphone
constructive algorithms
,
data structures
,
implementation
1600
x6035
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