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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
4 days
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*combine tags by OR
greedy
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
450A
Jzzhu and Children
implementation
1000
x32658
447B
DZY Loves Strings
greedy
,
implementation
1000
x19988
445A
DZY Loves Chessboard
dfs and similar
,
implementation
1200
x28317
441A
Valera and Antique Items
implementation
1000
x18219
439B
Devu, the Dumb Guy
implementation
,
sortings
1200
x14060
435A
Queue on Bus Stop
implementation
1000
x9987
433B
Kuriyama Mirai's Stones
dp
,
implementation
,
sortings
1200
x36553
433A
Kitahara Haruki's Gift
brute force
,
implementation
1100
x15797
432B
Football Kit
brute force
,
greedy
,
implementation
1200
x11483
431B
Shower Line
brute force
,
implementation
1200
x10503
427B
Prison Transfer
data structures
,
implementation
1100
x13726
424B
Megacity
binary search
,
greedy
,
implementation
,
sortings
1200
x7354
420A
Start Up
implementation
1000
x5891
413A
Data Recovery
implementation
1200
x2540
412C
Pattern
implementation
,
strings
1200
x3855
408B
Garland
implementation
1200
x8888
404A
Valera and X
implementation
1000
x22982
402A
Nuts
greedy
,
math
1100
x4515
401B
Sereja and Contests
greedy
,
implementation
,
math
1200
x4385
400B
Inna and New Matrix of Candies
brute force
,
implementation
,
schedules
1200
x7354
400A
Inna and Choose Options
implementation
1000
x6405
389B
Fox and Cross
greedy
,
implementation
1100
x6819
389A
Fox and Number Game
greedy
,
math
1000
x13855
387B
George and Round
brute force
,
greedy
,
two pointers
1200
x11927
385B
Bear and Strings
brute force
,
greedy
,
implementation
,
math
,
strings
1200
x9548
385A
Bear and Raspberry
brute force
,
greedy
,
implementation
1000
x16237
382A
Ksenia and Pan Scales
greedy
,
implementation
1100
x11803
381B
Sereja and Stairs
greedy
,
implementation
,
sortings
1100
x6589
379B
New Year Present
constructive algorithms
,
implementation
1200
x7188
379A
New Year Candles
implementation
1000
x44608
371A
K-Periodic Array
greedy
,
implementation
,
math
1000
x5954
368A
Sereja and Coat Rack
implementation
1000
x7378
366B
Dima and To-do List
brute force
,
implementation
1200
x6729
366A
Dima and Guards
implementation
1100
x4482
365B
The Fibonacci Segment
implementation
1100
x14046
365A
Good Number
implementation
1100
x17512
362B
Petya and Staircases
implementation
,
sortings
1100
x13516
359A
Table
constructive algorithms
,
greedy
,
implementation
1000
x8387
357A
Group of Students
brute force
,
greedy
,
implementation
1000
x6702
355B
Vasya and Public Transport
greedy
,
implementation
1100
x4434
355A
Vasya and Digital Root
constructive algorithms
,
implementation
1100
x9273
353A
Domino
implementation
,
math
1200
x17876
352A
Jeff and Digits
brute force
,
implementation
,
math
1000
x24703
350A
TL
brute force
,
greedy
,
implementation
1200
x15996
349A
Cinema Line
greedy
,
implementation
1100
x28781
347B
Fixed Points
brute force
,
implementation
,
math
1100
x9152
342A
Xenia and Divisors
greedy
,
implementation
1200
x12143
339B
Xenia and Ringroad
implementation
1000
x66642
336A
Vasily the Bear and Triangle
implementation
,
math
1000
x9880
334A
Candy Bags
implementation
1000
x18081
327A
Flipping Game
brute force
,
dp
,
implementation
1200
x40121
322A
Ciel and Dancing
greedy
1000
x8094
316A1
Special Task
greedy
1100
x2594
315B
Sereja and Array
implementation
1200
x6854
313B
Ilya and Queries
dp
,
implementation
1100
x41646
312A
Whose sentence is it?
implementation
,
strings
1100
x4864
302B
Eugeny and Play List
binary search
,
implementation
,
two pointers
1200
x7797
300A
Array
brute force
,
constructive algorithms
,
implementation
1100
x21947
298B
Sail
brute force
,
greedy
,
implementation
1200
x13574
296A
Yaroslav and Permutations
greedy
,
math
1100
x22051
292B
Network Topology
graphs
,
implementation
1200
x7720
292A
SMSC
implementation
1100
x2638
289A
Polo the Penguin and Segments
brute force
,
implementation
1100
x8746
287A
IQ Test
brute force
,
implementation
1100
x18880
285C
Building Permutation
greedy
,
implementation
,
sortings
1200
x22534
285B
Find Marble
implementation
1200
x14760
285A
Slightly Decreasing Permutations
greedy
,
implementation
1100
x13118
284B
Cows and Poker Game
brute force
,
implementation
1000
x6674
272A
Dima and Friends
implementation
,
math
1000
x23582
270A
Fancy Fence
geometry
,
implementation
,
math
1100
x43573
268B
Buttons
implementation
,
math
1000
x30967
265B
Roadside Trees (Simplified Edition)
greedy
,
implementation
1000
x16913
264A
Escape from Stones
constructive algorithms
,
data structures
,
implementation
,
two pointers
1200
x10614
262B
Roma and Changing Signs
greedy
1200
x10940
259B
Little Elephant and Magic Square
brute force
,
implementation
1100
x13700
258A
Little Elephant and Bits
greedy
,
math
1100
x22122
257A
Sockets
greedy
,
implementation
,
sortings
1100
x6387
255B
Code Parsing
implementation
1200
x4876
253A
Boys and Girls
greedy
1100
x10951
252A
Little Xor
brute force
,
implementation
1100
x5171
250A
Paper Work
greedy
1000
x3995
245B
Internet Address
implementation
,
strings
1100
x5136
242B
Big Segment
implementation
,
sortings
1100
x15238
242A
Heads or Tails
brute force
,
implementation
1100
x6238
239A
Two Bags of Potatoes
greedy
,
implementation
,
math
1200
x18214
237A
Free Cash
implementation
1000
x25845
234A
Lefthanders and Righthanders
implementation
1200
x4381
230A
Dragons
greedy
,
sortings
1000
x74674
227B
Effective Approach
implementation
1100
x26542
225A
Dice Tower
constructive algorithms
,
greedy
1100
x11132
222A
Shooshuns and Sequence
brute force
,
implementation
1200
x10391
221A
Little Elephant and Function
implementation
,
math
1000
x14728
219A
k-String
implementation
,
strings
1000
x26122
218B
Airport
implementation
1100
x15792
218A
Mountain Scenery
brute force
,
constructive algorithms
,
implementation
1100
x8934
216A
Tiling with Hexagons
implementation
,
math
1200
x4921
208D
Prizes, Prizes, more Prizes
implementation
1200
x7497
203A
Two Problems
brute force
,
implementation
1200
x4113
196A
Lexicographically Maximum Subsequence
greedy
,
strings
1100
x5306
192B
Walking in the Rain
brute force
,
implementation
1100
x6148
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