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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
24:50:07
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constructive algorithms
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
#
Name
1339B
Sorted Adjacent Differences
constructive algorithms
,
sortings
1200
x25405
1497C1
k-LCM (easy version)
constructive algorithms
,
math
1200
x24242
1527B1
Palindrome Game (easy version)
constructive algorithms
,
games
1200
x23812
4B
Before an Exam
constructive algorithms
,
greedy
1200
x23235
1512D
Corrupted Array
constructive algorithms
,
data structures
,
greedy
1200
x21483
1433D
Districts Connection
constructive algorithms
,
dfs and similar
1200
x21476
1455B
Jumps
constructive algorithms
,
math
1200
x21135
1559C
Mocha and Hiking
constructive algorithms
,
graphs
1200
x19514
1512C
A-B Palindrome
constructive algorithms
,
implementation
,
strings
1200
x19283
776B
Sherlock and his girlfriend
constructive algorithms
,
number theory
1200
x18927
1437B
Reverse Binary Strings
constructive algorithms
,
greedy
1200
x18582
1922B
Forming Triangles
combinatorics
,
constructive algorithms
,
math
,
sortings
1200
x18500
1694B
Paranoid String
constructive algorithms
,
greedy
1200
x18362
1384A
Common Prefixes
constructive algorithms
,
greedy
,
strings
1200
x18318
1656C
Make Equal With Mod
constructive algorithms
,
math
,
number theory
,
sortings
1200
x18299
1497B
M-arrays
constructive algorithms
,
greedy
,
math
1200
x18231
1846D
Rudolph and Christmas Tree
constructive algorithms
,
geometry
,
math
1200
x18033
1907C
Removal of Unattractive Pairs
constructive algorithms
,
greedy
,
math
,
strings
1200
x17890
1846C
Rudolf and the Another Competition
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
1200
x17630
1793C
Dora and Search
constructive algorithms
,
data structures
,
two pointers
1200
x17621
1536B
Prinzessin der Verurteilung
brute force
,
constructive algorithms
,
strings
1200
x17493
1504B
Flip the Bits
constructive algorithms
,
greedy
,
implementation
,
math
1200
x16994
1375B
Neighbor Grid
constructive algorithms
,
greedy
1200
x16857
1933D
Turtle Tenacity: Continual Mods
constructive algorithms
,
greedy
,
math
,
number theory
,
sortings
1200
x16735
1713C
Build Permutation
constructive algorithms
,
dp
,
math
1200
x16672
1916C
Training Before the Olympiad
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1200
x16319
1635C
Differential Sorting
constructive algorithms
,
greedy
1200
x16095
1196B
Odd Sum Segments
constructive algorithms
,
math
1200
x16060
1419B
Stairs
brute force
,
constructive algorithms
,
greedy
,
implementation
,
math
1200
x15907
1270B
Interesting Subarray
constructive algorithms
,
greedy
,
math
1200
x15851
1822D
Super-Permutation
constructive algorithms
,
math
1200
x15671
1674D
A-B-C Sort
constructive algorithms
,
implementation
,
sortings
1200
x15625
1592B
Hemose Shopping
constructive algorithms
,
dsu
,
math
,
sortings
1200
x15491
1935B
Informatics in MAC
constructive algorithms
1200
x15412
1647B
Madoka and the Elegant Gift
brute force
,
constructive algorithms
,
graphs
,
implementation
1200
x14988
637B
Chat Order
*special problem
,
binary search
,
constructive algorithms
,
data structures
,
sortings
1200
x14822
1738B
Prefix Sum Addicts
constructive algorithms
,
greedy
,
math
,
sortings
1200
x14576
1149A
Prefix Sum Primes
constructive algorithms
,
greedy
,
math
,
number theory
1200
x14459
743B
Chloe and the sequence
binary search
,
bitmasks
,
constructive algorithms
,
implementation
1200
x14135
1205A
Almost Equal
constructive algorithms
,
greedy
,
math
1200
x13778
1245B
Restricted RPS
constructive algorithms
,
dp
,
greedy
1200
x13405
1272B
Snow Walking Robot
constructive algorithms
,
greedy
,
implementation
1200
x13391
1909B
Make Almost Equal With Mod
bitmasks
,
constructive algorithms
,
math
,
number theory
1200
x13126
1517B
Morning Jogging
constructive algorithms
,
greedy
,
sortings
1200
x13023
1207B
Square Filling
constructive algorithms
,
greedy
,
implementation
1200
x12893
78B
Easter Eggs
constructive algorithms
,
implementation
1200
x12555
1583B
Omkar and Heavenly Tree
constructive algorithms
,
trees
1200
x11871
779C
Dishonest Sellers
constructive algorithms
,
greedy
,
sortings
1200
x11437
1608B
Build the Permutation
constructive algorithms
,
greedy
1200
x11356
1305B
Kuroni and Simple Strings
constructive algorithms
,
greedy
,
strings
,
two pointers
1200
x11213
1903B
StORage room
bitmasks
,
brute force
,
constructive algorithms
,
greedy
1200
x10982
1581B
Diameter of Graph
constructive algorithms
,
graphs
,
greedy
,
math
1200
x10960
743A
Vladik and flights
constructive algorithms
,
greedy
,
implementation
1200
x10827
1799B
Equalize by Divide
brute force
,
constructive algorithms
,
greedy
,
math
1200
x10703
264A
Escape from Stones
constructive algorithms
,
data structures
,
implementation
,
two pointers
1200
x10561
1091B
New Year and the Treasure Geolocation
brute force
,
constructive algorithms
,
greedy
,
implementation
1200
x10342
625B
War of the Corporations
constructive algorithms
,
greedy
,
strings
1200
x9807
482A
Diverse Permutation
constructive algorithms
,
greedy
1200
x9455
732C
Sanatorium
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
1200
x9451
1099C
Postcard
constructive algorithms
,
implementation
1200
x9213
1227B
Box
constructive algorithms
1200
x9177
982A
Row
brute force
,
constructive algorithms
1200
x8914
708A
Letters Cyclic Shift
constructive algorithms
,
greedy
,
implementation
,
strings
1200
x8824
1153B
Serval and Toy Bricks
constructive algorithms
,
greedy
1200
x8804
1028B
Unnatural Conditions
constructive algorithms
,
math
1200
x8701
934B
A Prosperous Lot
constructive algorithms
,
implementation
1200
x8482
754A
Lesha and array splitting
constructive algorithms
,
greedy
,
implementation
1200
x8388
749B
Parallelogram is Back
brute force
,
constructive algorithms
,
geometry
1200
x8250
854B
Maxim Buys an Apartment
constructive algorithms
,
math
1200
x8108
740B
Alyona and flowers
constructive algorithms
1200
x7935
361B
Levko and Permutation
constructive algorithms
,
math
,
number theory
1200
x7852
560B
Gerald is into Art
constructive algorithms
,
implementation
1200
x7757
631B
Print Check
constructive algorithms
,
implementation
1200
x7229
379B
New Year Present
constructive algorithms
,
implementation
1200
x7021
931B
World Cup
constructive algorithms
,
implementation
1200
x7013
989B
A Tide of Riverscape
constructive algorithms
,
strings
1200
x6961
254A
Cards with Numbers
constructive algorithms
,
sortings
1200
x6799
803B
Distances to Zero
constructive algorithms
1200
x6373
53C
Little Frog
constructive algorithms
1200
x6178
171A
Mysterious numbers - 1
*special problem
,
constructive algorithms
1200
x4207
774C
Maximum Number
*special problem
,
constructive algorithms
,
greedy
,
implementation
1200
x3869
645A
Amity Assessment
brute force
,
constructive algorithms
,
implementation
1200
x3348
180F
Mathematical Analysis Rocks!
constructive algorithms
,
implementation
,
math
1200
x2439
478B
Random Teams
combinatorics
,
constructive algorithms
,
greedy
,
math
1300
x34906
1335D
Anti-Sudoku
constructive algorithms
,
implementation
1300
x26429
1365B
Trouble Sort
constructive algorithms
,
implementation
1300
x25850
1401C
Mere Array
constructive algorithms
,
math
,
number theory
,
sortings
1300
x23268
1367C
Social Distance
constructive algorithms
,
greedy
,
math
1300
x22488
1555C
Coin Rows
brute force
,
constructive algorithms
,
dp
,
implementation
1300
x20654
1521B
Nastia and a Good Array
constructive algorithms
,
math
,
number theory
1300
x20576
1381A1
Prefix Flip (Easy Version)
constructive algorithms
,
data structures
,
strings
1300
x19750
1454D
Number into Sequence
constructive algorithms
,
math
,
number theory
1300
x19570
1420C1
Pokémon Army (easy version)
constructive algorithms
,
dp
,
greedy
1300
x16920
1788C
Matching Numbers
constructive algorithms
,
greedy
,
math
1300
x16230
330B
Road Construction
constructive algorithms
,
graphs
1300
x16117
1603A
Di-visible Confusion
constructive algorithms
,
math
,
number theory
1300
x15996
1547D
Co-growing Sequence
bitmasks
,
constructive algorithms
,
greedy
1300
x15855
1862D
Ice Cream Balls
binary search
,
combinatorics
,
constructive algorithms
,
math
1300
x15701
570B
Simple Game
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1300
x15686
1733C
Parity Shuffle Sorting
constructive algorithms
,
sortings
1300
x14921
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