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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
25:23:27
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Difficulty:
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math
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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Status
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Custom test
Problems
#
Name
1158A
The Party and Sweets
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
,
sortings
,
two pointers
1500
x6682
1690F
Shifting String
graphs
,
math
,
number theory
,
strings
1700
x6672
908C
New Year and Curling
brute force
,
geometry
,
implementation
,
math
1500
x6644
148D
Bag of mice
dp
,
games
,
math
,
probabilities
1800
x6640
1552D
Array Differentiation
bitmasks
,
brute force
,
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
math
1800
x6635
518D
Ilya and Escalator
combinatorics
,
dp
,
math
,
probabilities
1700
x6633
1068A
Birthday
math
1400
x6603
1787C
Remove the Bracket
dp
,
greedy
,
math
1600
x6593
1854A2
Dual (Hard Version)
constructive algorithms
,
math
1900
x6573
1091D
New Year and the Permutation Concatenation
combinatorics
,
dp
,
math
1700
x6553
1889B
Doremy's Connecting Plan
constructive algorithms
,
greedy
,
math
,
sortings
1700
x6544
1119C
Ramesses and Corner Inversion
constructive algorithms
,
greedy
,
implementation
,
math
1500
x6543
955A
Feed the cat
greedy
,
math
1100
x6536
1656D
K-good
constructive algorithms
,
math
,
number theory
1900
x6534
630F
Selection of Personnel
combinatorics
,
math
1300
x6509
1833F
Ira and Flamenco
combinatorics
,
constructive algorithms
,
data structures
,
implementation
,
math
,
sortings
,
two pointers
1700
x6504
633B
A Trivial Problem
brute force
,
constructive algorithms
,
math
,
number theory
1300
x6497
793A
Oleg and shares
implementation
,
math
900
x6486
626B
Cards
constructive algorithms
,
dp
,
math
1300
x6482
750C
New Year and Rating
binary search
,
greedy
,
math
1600
x6474
1846E2
Rudolf and Snowflakes (hard version)
binary search
,
brute force
,
implementation
,
math
1800
x6444
1141E
Superhero Battle
math
1700
x6419
495B
Modular Equations
math
,
number theory
1600
x6408
1185D
Extra Element
implementation
,
math
1700
x6406
1313B
Different Rules
constructive algorithms
,
greedy
,
implementation
,
math
1700
x6396
808B
Average Sleep Time
data structures
,
implementation
,
math
1300
x6392
1556D
Take a Guess
bitmasks
,
constructive algorithms
,
interactive
,
math
1800
x6388
1879D
Sum of XOR Functions
bitmasks
,
combinatorics
,
divide and conquer
,
dp
,
math
1700
x6357
1152C
Neko does Maths
brute force
,
math
,
number theory
1800
x6350
1329B
Dreamoon Likes Sequences
bitmasks
,
combinatorics
,
math
1700
x6340
284A
Cows and Primitive Roots
implementation
,
math
,
number theory
1400
x6339
1475G
Strange Beauty
dp
,
math
,
number theory
,
sortings
1900
x6335
1620C
BA-String
brute force
,
dp
,
greedy
,
implementation
,
math
1800
x6309
166C
Median
greedy
,
math
,
sortings
1500
x6302
794B
Cutting Carrot
geometry
,
math
1200
x6294
1868B1
Candy Party (Easy Version)
bitmasks
,
constructive algorithms
,
graphs
,
greedy
,
implementation
,
math
1700
x6293
1822G1
Magic Triples (Easy Version)
brute force
,
data structures
,
math
,
number theory
1700
x6286
369B
Valera and Contest
constructive algorithms
,
implementation
,
math
1400
x6257
609C
Load Balancing
implementation
,
math
1500
x6247
1864D
Matrix Cascade
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
math
1700
x6220
630I
Parking Lot
combinatorics
,
math
1700
x6209
909B
Segments
constructive algorithms
,
math
1300
x6184
71C
Round Table Knights
dp
,
math
,
number theory
1600
x6179
1932E
Final Countdown
implementation
,
math
,
number theory
1600
x6165
1194D
1-2-K Game
games
,
math
1700
x6157
847M
Weather Tomorrow
implementation
,
math
1000
x6151
1562D1
Two Hundred Twenty One (easy version)
data structures
,
dp
,
math
1700
x6150
1012A
Photo of The Sky
brute force
,
implementation
,
math
,
sortings
1500
x6139
628A
Tennis Tournament
implementation
,
math
1000
x6123
1936A
Bitwise Operation Wizard
bitmasks
,
constructive algorithms
,
greedy
,
interactive
,
math
1700
x6121
1009D
Relatively Prime Graph
brute force
,
constructive algorithms
,
graphs
,
greedy
,
math
1700
x6119
1470B
Strange Definition
bitmasks
,
graphs
,
hashing
,
math
,
number theory
1900
x6114
659D
Bicycle Race
geometry
,
implementation
,
math
1500
x6114
1648B
Integral Array
brute force
,
constructive algorithms
,
data structures
,
math
1800
x6097
559C
Gerald and Giant Chess
combinatorics
,
dp
,
math
,
number theory
2200
x6086
415B
Mashmokh and Tokens
binary search
,
greedy
,
implementation
,
math
1500
x6082
1674E
Breaking the Wall
binary search
,
brute force
,
constructive algorithms
,
greedy
,
math
2000
x6062
992B
Nastya Studies Informatics
math
,
number theory
1600
x6061
1111C
Creative Snap
binary search
,
brute force
,
divide and conquer
,
math
1700
x6058
459C
Pashmak and Buses
combinatorics
,
constructive algorithms
,
math
1900
x6045
83A
Magical Array
math
1300
x6045
1705D
Mark and Lightbulbs
combinatorics
,
constructive algorithms
,
greedy
,
math
,
sortings
1800
x6042
817A
Treasure Hunt
implementation
,
math
,
number theory
1200
x6037
1111B
Average Superhero Gang Power
brute force
,
implementation
,
math
1700
x6019
197A
Plate Game
constructive algorithms
,
games
,
math
1600
x5998
1444B
Divide and Sum
combinatorics
,
math
,
sortings
1900
x5986
833A
The Meaningless Game
math
,
number theory
1700
x5984
1215D
Ticket Game
games
,
greedy
,
math
1700
x5950
1066E
Binary Numbers AND Sum
data structures
,
implementation
,
math
1700
x5947
1635D
Infinite Set
bitmasks
,
dp
,
math
,
matrices
,
number theory
,
strings
1800
x5938
864D
Make a Permutation!
greedy
,
implementation
,
math
1500
x5933
1901D
Yet Another Monster Fight
binary search
,
dp
,
greedy
,
implementation
,
math
1700
x5912
1492D
Genius's Gambit
bitmasks
,
constructive algorithms
,
greedy
,
math
1900
x5905
371A
K-Periodic Array
greedy
,
implementation
,
math
1000
x5902
1416B
Make Them Equal
constructive algorithms
,
greedy
,
math
2000
x5870
103A
Testing Pants for Sadness
greedy
,
implementation
,
math
1100
x5835
1848C
Vika and Price Tags
math
,
number theory
1800
x5827
1186C
Vus the Cossack and Strings
implementation
,
math
1800
x5818
1279D
Santa's Bot
combinatorics
,
math
,
probabilities
1700
x5811
864C
Bus
greedy
,
implementation
,
math
1500
x5809
1184A1
Heidi Learns Hashing (Easy)
brute force
,
math
,
number theory
1200
x5792
1792D
Fixed Prefix Permutations
binary search
,
bitmasks
,
data structures
,
hashing
,
math
,
sortings
1700
x5781
1354C2
Not So Simple Polygon Embedding
binary search
,
brute force
,
geometry
,
math
2000
x5781
1700D
River Locks
binary search
,
dp
,
greedy
,
math
1900
x5771
538C
Tourist's Notes
binary search
,
brute force
,
greedy
,
implementation
,
math
1600
x5746
500C
New Year Book Reading
constructive algorithms
,
greedy
,
implementation
,
math
1600
x5729
776C
Molly's Chemicals
binary search
,
brute force
,
data structures
,
implementation
,
math
1800
x5721
190A
Vasya and the Bus
greedy
,
math
1100
x5690
525C
Ilya and Sticks
greedy
,
math
,
sortings
1600
x5688
1359E
Modular Stability
combinatorics
,
math
,
number theory
2000
x5685
1793D
Moscow Gorillas
binary search
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1800
x5659
1934C
Find a Mine
binary search
,
constructive algorithms
,
geometry
,
greedy
,
interactive
,
math
1700
x5658
185A
Plant
math
1300
x5655
697B
Barnicle
brute force
,
implementation
,
math
,
strings
1400
x5652
976B
Lara Croft and the New Game
implementation
,
math
1300
x5649
1775D
Friendly Spiders
dfs and similar
,
graphs
,
math
,
number theory
,
shortest paths
1800
x5641
1872F
Selling a Menagerie
dfs and similar
,
dsu
,
graphs
,
implementation
,
math
1800
x5627
703B
Mishka and trip
implementation
,
math
1400
x5624
1477A
Nezzar and Board
constructive algorithms
,
math
,
number theory
1800
x5622
821B
Okabe and Banana Trees
brute force
,
math
1300
x5616
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