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Codeforces Round 995 (Div. 3)
01:44:17
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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
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number theory
probabilities
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shortest paths
sortings
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Problems
#
Name
1829B
Blank Space
implementation
800
x48634
1829A
Love Story
implementation
,
strings
800
x53426
1828A
Divisible Array
constructive algorithms
,
math
800
x23922
1825A
LuoTianyi and the Palindrome String
greedy
,
strings
800
x19817
1823A
A-characteristic
combinatorics
,
constructive algorithms
,
math
800
x16412
1822C
Bun Lover
math
800
x23284
1822B
Karina and Array
greedy
,
math
,
sortings
800
x25228
1822A
TubeTube Feed
brute force
,
implementation
800
x24748
1821A
Matching
combinatorics
,
math
800
x20077
1820A
Yura's New Name
implementation
,
strings
800
x16849
1818A
Politics
greedy
,
implementation
800
x13149
1816A
Ian Visits Mary
constructive algorithms
,
geometry
,
number theory
800
x17727
1814A
Coins
implementation
,
math
800
x30511
1811A
Insert Digit
greedy
,
math
,
strings
800
x31684
1810B
Candies
constructive algorithms
,
math
,
number theory
800
x17700
1810A
Beautiful Sequence
brute force
,
greedy
800
x20920
1809A
Garland
implementation
800
x24122
1807C
Find and Replace
greedy
,
implementation
,
strings
800
x31115
1807B
Grab the Candies
greedy
800
x43139
1807A
Plus or Minus
implementation
800
x65265
1806A
Walking Master
geometry
,
greedy
,
math
800
x26148
1805B
The String Has a Target
greedy
,
strings
800
x18779
1805A
We Need the Zero
bitmasks
,
brute force
800
x24883
1804A
Lame King
greedy
,
math
800
x18049
1802A
Likes
greedy
,
implementation
800
x15973
1800A
Is It a Cat?
implementation
,
strings
800
x32303
1799A
Recent Actions
data structures
,
greedy
,
implementation
,
math
800
x11676
1798A
Showstopper
greedy
,
implementation
,
sortings
800
x20211
1797A
Li Hua and Maze
constructive algorithms
,
flows
,
graphs
,
greedy
,
implementation
800
x17765
1796A
Typical Interview Problem
brute force
,
implementation
,
strings
800
x18948
1795A
Two Towers
brute force
,
implementation
,
strings
800
x23763
1794A
Prefix and Suffix Array
strings
800
x17311
1793A
Yet Another Promotion
greedy
,
math
800
x18161
1792A
GamingForces
greedy
,
sortings
800
x28435
1791C
Prepend and Append
implementation
,
two pointers
800
x48041
1791B
Following Directions
geometry
,
implementation
800
x45731
1791A
Codeforces Checking
implementation
,
strings
800
x63761
1790B
Taisia and Dice
greedy
,
greedy
,
math
800
x27675
1790A
Polycarp and the Day of Pi
implementation
,
math
,
strings
800
x37598
1789B
Serval and Inversion Magic
brute force
,
implementation
,
strings
,
two pointers
800
x16323
1789A
Serval and Mocha's Array
brute force
,
math
,
number theory
800
x19919
1788A
One and Two
brute force
,
implementation
,
math
800
x32383
1787A
Exponential Equation
constructive algorithms
,
math
800
x19336
1786A2
Alternating Deck (hard version)
implementation
800
x11485
1786A1
Non-alternating Deck (easy version)
implementation
800
x14129
1783A
Make it Beautiful
constructive algorithms
,
math
,
sortings
800
x31409
1781A
Parallel Projection
geometry
,
math
800
x15179
1780A
Hayato and School
constructive algorithms
,
greedy
800
x21850
1779A
Hall of Fame
constructive algorithms
,
greedy
,
strings
800
x23269
1778A
Flip Flop Sum
greedy
,
implementation
800
x24563
1777A
Everybody Likes Good Arrays!
greedy
,
math
800
x25742
1776A
Walking Boy
greedy
800
x7126
1775A1
Gardener and the Capybaras (easy version)
brute force
,
constructive algorithms
,
implementation
800
x19782
1774A
Add Plus Minus Sign
constructive algorithms
,
math
800
x22614
1773F
Football
constructive algorithms
800
x4270
1772B
Matrix Rotation
brute force
,
implementation
800
x29577
1772A
A+B?
implementation
800
x49578
1769A
Узкая дорога
*special problem
,
math
800
x1991
1768A
Greatest Convex
greedy
,
math
,
number theory
800
x29186
1767B
Block Towers
data structures
,
greedy
,
sortings
800
x20526
1767A
Cut the Triangle
implementation
800
x20697
1766A
Extremely Round
brute force
,
implementation
800
x27902
1765B
Broken Keyboard
greedy
800
x9163
1764A
Doremy's Paint
greedy
800
x16772
1763A
Absolute Maximization
bitmasks
,
constructive algorithms
,
greedy
,
math
800
x15871
1762A
Divide and Conquer
greedy
,
math
,
number theory
800
x19385
1761A
Two Permutations
brute force
,
constructive algorithms
800
x20712
1760C
Advantage
data structures
,
implementation
,
sortings
800
x38236
1760B
Atilla's Favorite Problem
greedy
,
implementation
,
strings
800
x46002
1760A
Medium Number
implementation
,
sortings
800
x62510
1759B
Lost Permutation
math
800
x22398
1759A
Yes-Yes?
implementation
,
strings
800
x30411
1758A
SSeeeeiinngg DDoouubbllee
constructive algorithms
,
strings
800
x25412
1754B
Kevin and Permutation
constructive algorithms
,
greedy
,
math
800
x19022
1754A
Technical Support
greedy
800
x23406
1750B
Maximum Substring
brute force
,
greedy
,
implementation
800
x16321
1750A
Indirect Sort
constructive algorithms
,
implementation
,
math
800
x17174
1749A
Cowardly Rooks
greedy
,
implementation
800
x22469
1748A
The Ultimate Square
math
800
x24244
1747A
Two Groups
constructive algorithms
,
greedy
800
x25138
1746B
Rebellion
constructive algorithms
,
greedy
,
two pointers
800
x17393
1746A
Maxmina
constructive algorithms
,
greedy
800
x19984
1744B
Even-Odd Increments
implementation
,
math
800
x23703
1744A
Number Replacement
greedy
,
implementation
800
x27367
1743B
Permutation Value
constructive algorithms
,
greedy
800
x22337
1743A
Password
brute force
,
combinatorics
,
implementation
,
math
800
x27041
1742B
Increasing
greedy
,
implementation
,
sortings
800
x49609
1742A
Sum
implementation
800
x77036
1741B
Funny Permutation
constructive algorithms
,
math
800
x25618
1741A
Compare T-Shirt Sizes
implementation
,
implementation
,
strings
800
x31207
1740B
Jumbo Extra Cheese 2
geometry
,
greedy
,
sortings
800
x13830
1740A
Factorise N+M
constructive algorithms
,
number theory
800
x20554
1739A
Immobile Knight
implementation
800
x22911
1738A
Glory Addicts
greedy
,
implementation
,
sortings
800
x13601
1736A
Make A Equal to B
brute force
,
greedy
,
sortings
800
x22989
1735A
Working Week
constructive algorithms
,
greedy
,
math
800
x20397
1734B
Bright, Nice, Brilliant
constructive algorithms
800
x15896
1734A
Select Three Sticks
brute force
,
greedy
,
sortings
800
x21347
1733A
Consecutive Sum
greedy
,
sortings
800
x21103
1731A
Joey Takes Money
greedy
,
math
800
x22746
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