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Before contest
CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
30:22:36
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constructive algorithms
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
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
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x125063
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x85895
443A
Anton and Letters
constructive algorithms
,
implementation
800
x82611
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x66084
1343B
Balanced Array
constructive algorithms
,
math
800
x53078
1454A
Special Permutation
constructive algorithms
,
probabilities
800
x38706
1353A
Most Unstable Array
constructive algorithms
,
greedy
,
math
800
x38664
1389A
LCM Problem
constructive algorithms
,
greedy
,
math
,
number theory
800
x37878
1325A
EhAb AnD gCd
constructive algorithms
,
greedy
,
number theory
800
x37650
1335B
Construct the String
constructive algorithms
900
x36650
1337A
Ichihime and Triangle
constructive algorithms
,
math
800
x35601
467B
Fedor and New Game
bitmasks
,
brute force
,
constructive algorithms
,
implementation
1100
x35309
686A
Free Ice Cream
constructive algorithms
,
implementation
800
x34987
1521A
Nastia and Nearly Good Numbers
constructive algorithms
,
math
,
number theory
1000
x34929
478B
Random Teams
combinatorics
,
constructive algorithms
,
greedy
,
math
1300
x34904
1352B
Same Parity Summands
constructive algorithms
,
math
1200
x34778
1476A
K-divisible Sum
binary search
,
constructive algorithms
,
greedy
,
math
1000
x34490
1702A
Round Down the Price
constructive algorithms
800
x33077
1690A
Print a Pedestal (Codeforces logo?)
constructive algorithms
,
greedy
800
x32266
1360C
Similar Pairs
constructive algorithms
,
graph matchings
,
greedy
,
sortings
1100
x31426
1372A
Omkar and Completion
constructive algorithms
,
implementation
800
x31275
766B
Mahmoud and a Triangle
constructive algorithms
,
geometry
,
greedy
,
math
,
number theory
,
sortings
1000
x30539
1520C
Not Adjacent Matrix
constructive algorithms
1000
x30342
1611A
Make Even
constructive algorithms
,
math
800
x30317
688B
Lovely Palindromes
constructive algorithms
,
math
1000
x29842
1878B
Aleksa and Stack
constructive algorithms
,
math
800
x29362
1927B
Following the String
constructive algorithms
,
greedy
,
strings
900
x29336
1529A
Eshag Loves Big Arrays
constructive algorithms
,
greedy
,
math
800
x29261
1326A
Bad Ugly Numbers
constructive algorithms
,
number theory
1000
x29196
1541A
Pretty Permutations
constructive algorithms
,
greedy
,
implementation
800
x28850
766A
Mahmoud and Longest Uncommon Subsequence
constructive algorithms
,
strings
1000
x28430
1859A
United We Stand
constructive algorithms
,
math
,
number theory
800
x28349
1851A
Escalator Conversations
brute force
,
constructive algorithms
,
math
800
x28291
1837A
Grasshopper on a Line
constructive algorithms
,
math
800
x28233
1626A
Equidistant Letters
constructive algorithms
,
sortings
800
x28184
1611B
Team Composition: Programmers and Mathematicians
binary search
,
constructive algorithms
,
math
800
x28181
1918A
Brick Wall
constructive algorithms
,
greedy
,
implementation
,
math
800
x28143
118B
Present from Lena
constructive algorithms
,
implementation
1000
x28001
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x27955
1914B
Preparing for the Contest
constructive algorithms
,
math
800
x27954
1559A
Mocha and Math
bitmasks
,
constructive algorithms
,
math
900
x27815
1862B
Sequence Game
constructive algorithms
800
x27661
1537B
Bad Boy
constructive algorithms
,
greedy
,
math
900
x27471
1196A
Three Piles of Candies
brute force
,
constructive algorithms
,
math
800
x26996
1401A
Distance and Axis
constructive algorithms
,
math
900
x26780
1925A
We Got Everything Covered!
constructive algorithms
,
greedy
,
strings
800
x26626
1783A
Make it Beautiful
constructive algorithms
,
math
,
sortings
800
x26521
1400A
String Similarity
constructive algorithms
,
strings
800
x26449
1335D
Anti-Sudoku
constructive algorithms
,
implementation
1300
x26429
1469A
Regular Bracket Sequence
constructive algorithms
,
greedy
1000
x26286
1433C
Dominant Piranha
constructive algorithms
,
greedy
900
x26171
1537C
Challenging Cliffs
constructive algorithms
,
greedy
,
implementation
,
math
1200
x26034
1474B
Different Divisors
binary search
,
constructive algorithms
,
greedy
,
math
,
number theory
1000
x25911
1365B
Trouble Sort
constructive algorithms
,
implementation
1300
x25850
768A
Oath of the Night's Watch
constructive algorithms
,
sortings
900
x25835
1509A
Average Height
constructive algorithms
800
x25565
1674A
Number Transformation
constructive algorithms
,
math
800
x25458
1922A
Tricky Template
constructive algorithms
,
implementation
,
strings
800
x25438
1490B
Balanced Remainders
brute force
,
constructive algorithms
,
math
1000
x25407
1339B
Sorted Adjacent Differences
constructive algorithms
,
sortings
1200
x25403
1711A
Perfect Permutation
constructive algorithms
800
x24702
199A
Hexadecimal's theorem
brute force
,
constructive algorithms
,
implementation
,
number theory
900
x24647
1741B
Funny Permutation
constructive algorithms
,
math
800
x24596
1348B
Phoenix and Beauty
constructive algorithms
,
data structures
,
greedy
,
sortings
1400
x24408
1497C1
k-LCM (easy version)
constructive algorithms
,
math
1200
x24240
1747A
Two Groups
constructive algorithms
,
greedy
800
x24233
1935A
Entertainment in MAC
constructive algorithms
,
strings
800
x24186
1758A
SSeeeeiinngg DDoouubbllee
constructive algorithms
,
strings
800
x24174
1916A
2023
constructive algorithms
,
implementation
,
math
,
number theory
800
x24170
1886A
Sum of Three
brute force
,
constructive algorithms
,
math
800
x24147
1525B
Permutation Sort
constructive algorithms
,
greedy
900
x24063
1841A
Game with Board
constructive algorithms
,
games
800
x24041
1312B
Bogosort
constructive algorithms
,
sortings
1000
x24025
1333A
Little Artem
constructive algorithms
1000
x24008
1391A
Suborrays
constructive algorithms
,
math
800
x23949
1845A
Forbidden Integer
constructive algorithms
,
implementation
,
math
,
number theory
800
x23812
1527B1
Palindrome Game (easy version)
constructive algorithms
,
games
1200
x23811
1624C
Division by Two and Permutation
constructive algorithms
,
flows
,
graph matchings
,
greedy
,
math
1100
x23801
1526A
Mean Inequality
constructive algorithms
,
sortings
800
x23771
1467A
Wizard of Orz
constructive algorithms
,
greedy
,
math
900
x23764
1917A
Least Product
constructive algorithms
,
math
800
x23730
1627A
Not Shading
constructive algorithms
,
implementation
800
x23722
1844A
Subtraction Game
constructive algorithms
,
games
800
x23618
1699A
The Third Three Number Problem
constructive algorithms
,
math
800
x23558
1859B
Olya and Game with Arrays
constructive algorithms
,
greedy
,
math
,
sortings
1000
x23540
1621A
Stable Arrangement of Rooks
constructive algorithms
800
x23488
1831A
Twin Permutations
constructive algorithms
800
x23448
1684A
Digit Minimization
constructive algorithms
,
games
,
math
,
strings
800
x23374
1419D1
Sage's Birthday (easy version)
binary search
,
constructive algorithms
,
greedy
,
sortings
1000
x23360
1401C
Mere Array
constructive algorithms
,
math
,
number theory
,
sortings
1300
x23267
4B
Before an Exam
constructive algorithms
,
greedy
1200
x23231
1948A
Special Characters
brute force
,
constructive algorithms
800
x23197
680B
Bear and Finding Criminals
constructive algorithms
,
implementation
1000
x23158
1430C
Numbers on Whiteboard
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
1000
x23112
1929B
Sasha and the Drawing
constructive algorithms
,
greedy
,
math
800
x23102
1715A
Crossmarket
constructive algorithms
,
greedy
,
math
800
x23094
1342B
Binary Period
constructive algorithms
,
strings
1100
x23087
1916B
Two Divisors
constructive algorithms
,
math
,
number theory
1000
x23047
1370B
GCD Compression
constructive algorithms
,
math
,
number theory
1100
x22984
1614A
Divan and a Store
brute force
,
constructive algorithms
,
greedy
800
x22978
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