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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
25:07:34
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sortings
combine-tags-by-or
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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
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probabilities
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Problems
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Name
252B
Unsorting Array
brute force
,
sortings
1800
x1673
83B
Doctor
binary search
,
math
,
sortings
1800
x1613
370C
Mittens
constructive algorithms
,
greedy
,
sortings
1800
x1497
847K
Travel Cards
greedy
,
implementation
,
sortings
1800
x1475
1402A
Fancy Fence
*special problem
,
data structures
,
dsu
,
implementation
,
math
,
sortings
1800
x1122
5C
Longest Regular Bracket Sequence
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
,
strings
1900
x12422
1375D
Replace by MEX
brute force
,
constructive algorithms
,
sortings
1900
x8646
1242B
0-1 MST
dfs and similar
,
dsu
,
graphs
,
sortings
1900
x6915
1475G
Strange Beauty
dp
,
math
,
number theory
,
sortings
1900
x6335
1444B
Divide and Sum
combinatorics
,
math
,
sortings
1900
x5986
1307D
Cow and Fields
binary search
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
,
sortings
1900
x5926
1342D
Multiple Testcases
binary search
,
constructive algorithms
,
data structures
,
greedy
,
sortings
,
two pointers
1900
x5811
1175D
Array Splitting
greedy
,
sortings
1900
x5594
1251D
Salary Changing
binary search
,
greedy
,
sortings
1900
x5588
1413C
Perform Easily
binary search
,
brute force
,
dp
,
implementation
,
sortings
,
two pointers
1900
x5511
1707B
Difference Array
brute force
,
data structures
,
implementation
,
sortings
1900
x5478
1701D
Permutation Restoration
binary search
,
data structures
,
greedy
,
math
,
sortings
,
two pointers
1900
x5412
459E
Pashmak and Graph
dp
,
sortings
1900
x5234
1371E1
Asterism (Easy Version)
binary search
,
brute force
,
combinatorics
,
math
,
number theory
,
sortings
1900
x4940
1883G2
Dances (Hard Version)
binary search
,
greedy
,
sortings
,
two pointers
1900
x4727
1791G2
Teleporters (Hard Version)
binary search
,
greedy
,
sortings
1900
x4390
1746D
Paths on the Tree
dfs and similar
,
dp
,
greedy
,
sortings
,
trees
1900
x4361
1270D
Strange Device
constructive algorithms
,
interactive
,
math
,
sortings
1900
x4355
817D
Imbalanced Array
data structures
,
divide and conquer
,
dsu
,
sortings
1900
x4350
552D
Vanya and Triangles
brute force
,
combinatorics
,
data structures
,
geometry
,
math
,
sortings
1900
x4329
1834D
Survey in Class
brute force
,
data structures
,
greedy
,
implementation
,
sortings
1900
x4265
1569D
Inconvenient Pairs
binary search
,
data structures
,
implementation
,
sortings
,
two pointers
1900
x4215
3B
Lorry
greedy
,
sortings
1900
x4118
1237C2
Balanced Removals (Harder)
binary search
,
constructive algorithms
,
divide and conquer
,
greedy
,
implementation
,
sortings
1900
x4115
1650E
Rescheduling the Exam
binary search
,
data structures
,
greedy
,
implementation
,
math
,
sortings
1900
x3969
557C
Arthur and Table
brute force
,
data structures
,
dp
,
greedy
,
math
,
sortings
1900
x3933
1311F
Moving Points
data structures
,
divide and conquer
,
implementation
,
sortings
1900
x3849
1260D
A Game with Traps
binary search
,
dp
,
greedy
,
sortings
1900
x3569
1927F
Microcycle
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
sortings
,
trees
1900
x3533
1819B
The Butcher
geometry
,
greedy
,
implementation
,
sortings
,
two pointers
1900
x3374
1361B
Johnny and Grandmaster
greedy
,
implementation
,
math
,
sortings
1900
x3374
1801C
Music Festival
binary search
,
data structures
,
dp
,
greedy
,
sortings
1900
x3144
437D
The Child and Zoo
dsu
,
sortings
1900
x3121
1932F
Feed Cats
data structures
,
dp
,
sortings
1900
x3009
1945F
Kirill and Mushrooms
data structures
,
sortings
1900
x2889
1899G
Unusual Entertainment
data structures
,
dfs and similar
,
dsu
,
shortest paths
,
sortings
,
trees
,
two pointers
1900
x2794
1043E
Train Hard, Win Easy
constructive algorithms
,
greedy
,
math
,
sortings
1900
x2676
22D
Segments
greedy
,
sortings
1900
x2571
633C
Spy Syndrome 2
data structures
,
dp
,
hashing
,
implementation
,
sortings
,
string suffix structures
,
strings
1900
x2566
118C
Fancy Number
brute force
,
greedy
,
sortings
,
strings
1900
x2509
417D
Cunning Gena
bitmasks
,
dp
,
greedy
,
sortings
1900
x2348
757C
Felicity is Coming!
data structures
,
hashing
,
sortings
,
strings
1900
x2303
353B
Two Heaps
combinatorics
,
constructive algorithms
,
greedy
,
implementation
,
math
,
sortings
1900
x2167
613B
Skills
binary search
,
brute force
,
dp
,
greedy
,
sortings
,
two pointers
1900
x2142
729E
Subordinates
constructive algorithms
,
data structures
,
graphs
,
greedy
,
sortings
1900
x2126
222D
Olympiad
binary search
,
greedy
,
sortings
,
two pointers
1900
x2121
524C
The Art of Dealing with ATM
binary search
,
sortings
1900
x1971
377B
Preparing for the Contest
binary search
,
data structures
,
greedy
,
sortings
1900
x1967
848B
Rooter's Song
constructive algorithms
,
data structures
,
geometry
,
implementation
,
sortings
,
two pointers
1900
x1809
1912A
Accumulator Apex
data structures
,
implementation
,
sortings
1900
x1713
865B
Ordering Pizza
binary search
,
sortings
,
ternary search
1900
x1646
45D
Event Dates
greedy
,
meet-in-the-middle
,
sortings
1900
x1566
158E
Phone Talks
*special problem
,
dp
,
sortings
1900
x1447
119B
Before Exam
constructive algorithms
,
implementation
,
sortings
1900
x1059
195D
Analyzing Polyline
geometry
,
math
,
sortings
1900
x995
120J
Minimum Sum
divide and conquer
,
geometry
,
sortings
1900
x904
529B
Group Photo 2 (online mirror version)
brute force
,
greedy
,
sortings
1900
x850
421D
Bug in Code
binary search
,
data structures
,
sortings
1900
x491
648D
Собачки и миски
data structures
,
greedy
,
sortings
1900
x220
1156C
Match Points
binary search
,
greedy
,
sortings
,
ternary search
,
two pointers
2000
x5706
1379C
Choosing flowers
binary search
,
brute force
,
data structures
,
dfs and similar
,
dp
,
greedy
,
sortings
,
two pointers
2000
x5358
1513D
GCD and MST
constructive algorithms
,
dsu
,
graphs
,
greedy
,
number theory
,
sortings
2000
x4954
1244E
Minimizing Difference
binary search
,
constructive algorithms
,
greedy
,
sortings
,
ternary search
,
two pointers
2000
x4733
1657D
For Gamers. By Gamers.
binary search
,
brute force
,
greedy
,
math
,
sortings
2000
x4666
1487E
Cheap Dinner
brute force
,
data structures
,
graphs
,
greedy
,
implementation
,
sortings
,
two pointers
2000
x4333
1525C
Robot Collisions
data structures
,
greedy
,
implementation
,
sortings
2000
x4295
1416C
XOR Inverse
bitmasks
,
data structures
,
divide and conquer
,
dp
,
greedy
,
math
,
sortings
,
strings
,
trees
2000
x4131
1408D
Searchlights
binary search
,
brute force
,
data structures
,
dp
,
implementation
,
sortings
,
two pointers
2000
x4126
864E
Fire
dp
,
sortings
2000
x4095
1514D
Cut and Stick
binary search
,
data structures
,
greedy
,
implementation
,
sortings
2000
x4051
1841D
Pairs of Segments
data structures
,
greedy
,
sortings
,
two pointers
2000
x4036
1857G
Counting Graphs
combinatorics
,
divide and conquer
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2000
x3969
1256E
Yet Another Division Into Teams
dp
,
greedy
,
sortings
2000
x3845
777E
Hanoi Factory
brute force
,
data structures
,
dp
,
greedy
,
sortings
2000
x3834
1641B
Repetitions Decoding
constructive algorithms
,
implementation
,
sortings
2000
x3708
555B
Case of Fugitive
data structures
,
greedy
,
sortings
2000
x3672
1198C
Matching vs Independent Set
constructive algorithms
,
graphs
,
greedy
,
sortings
2000
x3230
1690G
Count the Trains
binary search
,
data structures
,
greedy
,
sortings
2000
x3170
1685B
Linguistics
greedy
,
implementation
,
sortings
,
strings
2000
x3125
1506F
Triangular Paths
constructive algorithms
,
graphs
,
math
,
shortest paths
,
sortings
2000
x3075
388C
Fox and Card Game
games
,
greedy
,
sortings
2000
x3062
474E
Pillars
binary search
,
data structures
,
dp
,
sortings
,
trees
2000
x3052
1256F
Equalizing Two Strings
constructive algorithms
,
sortings
,
strings
2000
x3024
1889C1
Doremy's Drying Plan (Easy Version)
brute force
,
data structures
,
dp
,
greedy
,
sortings
2000
x2914
863E
Turn Off The TV
data structures
,
sortings
2000
x2887
1320C
World of Darkraft: Battle for Azathoth
brute force
,
data structures
,
sortings
2000
x2841
1851G
Vlad and the Mountains
binary search
,
data structures
,
dsu
,
graphs
,
implementation
,
sortings
,
trees
,
two pointers
2000
x2832
1209E1
Rotate Columns (easy version)
bitmasks
,
brute force
,
dp
,
greedy
,
sortings
2000
x2698
1862G
The Great Equalizer
binary search
,
data structures
,
math
,
sortings
2000
x2569
571B
Minimization
dp
,
greedy
,
sortings
2000
x2513
1214E
Petya and Construction Set
constructive algorithms
,
graphs
,
math
,
sortings
,
trees
2000
x2491
1612E
Messages
brute force
,
dp
,
greedy
,
probabilities
,
sortings
2000
x2364
1061D
TV Shows
data structures
,
greedy
,
implementation
,
sortings
2000
x2268
1183G
Candy Box (hard version)
greedy
,
implementation
,
sortings
2000
x2257
1619G
Unusual Minesweeper
binary search
,
dfs and similar
,
dsu
,
greedy
,
sortings
2000
x2233
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