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Codeforces Round 945 (Div. 2)
42:37:13
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Difficulty:
—
strings
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
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Custom test
Problems
#
Name
71A
Way Too Long Words
strings
800
x354949
112A
Petya and Strings
implementation
,
strings
800
x209871
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x198932
281A
Word Capitalization
implementation
,
strings
800
x196783
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x194040
59A
Word
implementation
,
strings
800
x162713
734A
Anton and Danik
implementation
,
strings
800
x140770
41A
Translation
implementation
,
strings
800
x135432
520A
Pangram
implementation
,
strings
800
x90129
785A
Anton and Polyhedrons
implementation
,
strings
800
x82505
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x78099
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x63025
1791A
Codeforces Checking
implementation
,
strings
800
x55244
1367A
Short Substrings
implementation
,
strings
800
x54941
1619A
Square String?
implementation
,
strings
800
x48622
1829A
Love Story
implementation
,
strings
800
x46077
731A
Night at the Museum
implementation
,
strings
800
x43287
1760B
Atilla's Favorite Problem
greedy
,
implementation
,
strings
800
x41883
1850C
Word on the Paper
implementation
,
strings
800
x41252
1927A
Make it White
greedy
,
strings
800
x39807
1579A
Casimir's String Solitaire
math
,
strings
800
x37841
1607A
Linear Keyboard
implementation
,
strings
800
x36120
1790A
Polycarp and the Day of Pi
implementation
,
math
,
strings
800
x35677
978B
File Name
greedy
,
strings
800
x35057
1703C
Cypher
brute force
,
implementation
,
strings
800
x34242
1650A
Deletions of Two Adjacent Letters
implementation
,
strings
800
x33921
1931A
Recovering a Small String
brute force
,
strings
800
x33621
1840A
Cipher Shifer
implementation
,
strings
,
two pointers
800
x32652
1833A
Musical Puzzle
implementation
,
strings
800
x31620
1862A
Gift Carpet
dp
,
greedy
,
implementation
,
strings
800
x30842
1303A
Erasing Zeroes
implementation
,
strings
800
x30572
1811A
Insert Digit
greedy
,
math
,
strings
800
x30069
1800A
Is It a Cat?
implementation
,
strings
800
x30032
1741A
Compare T-Shirt Sizes
implementation
,
implementation
,
strings
800
x29876
1914A
Problemsolving Log
implementation
,
strings
800
x29813
1567A
Domino Disaster
implementation
,
strings
800
x29665
1729B
Decode String
greedy
,
strings
800
x29417
1807C
Find and Replace
greedy
,
implementation
,
strings
800
x29239
1676C
Most Similar Words
brute force
,
greedy
,
implementation
,
implementation
,
math
,
strings
800
x28866
1220A
Cards
implementation
,
sortings
,
strings
800
x28864
1759A
Yes-Yes?
implementation
,
strings
800
x28832
1551B1
Wonderful Coloring - 1
greedy
,
strings
800
x28661
1397A
Juggling Letters
greedy
,
strings
800
x28127
1881A
Don't Try to Count
brute force
,
strings
800
x27576
1925A
We Got Everything Covered!
constructive algorithms
,
greedy
,
strings
800
x27179
1462B
Last Year's Substring
dp
,
implementation
,
strings
800
x26585
1400A
String Similarity
constructive algorithms
,
strings
800
x26557
1846B
Rudolph and Tic-Tac-Toe
brute force
,
implementation
,
strings
800
x26118
1547B
Alphabetical Strings
greedy
,
implementation
,
strings
800
x25979
1922A
Tricky Template
constructive algorithms
,
implementation
,
strings
800
x25892
1971B
Different String
implementation
,
strings
800
x25554
1935A
Entertainment in MAC
constructive algorithms
,
strings
800
x25516
1480A
Yet Another String Game
games
,
greedy
,
strings
800
x25440
1832A
New Palindrome
strings
800
x24908
1481A
Space Navigation
greedy
,
strings
800
x24665
1758A
SSeeeeiinngg DDoouubbllee
constructive algorithms
,
strings
800
x24396
1539B
Love Song
dp
,
implementation
,
strings
800
x23802
1634A
Reverse and Concatenate
greedy
,
strings
800
x23652
1552A
Subsequence Permutation
sortings
,
strings
800
x23521
1684A
Digit Minimization
constructive algorithms
,
games
,
math
,
strings
800
x23486
1795A
Two Towers
brute force
,
implementation
,
strings
800
x23249
1779A
Hall of Fame
constructive algorithms
,
greedy
,
strings
800
x22900
1706A
Another String Minimization Problem
2-sat
,
constructive algorithms
,
greedy
,
string suffix structures
,
strings
800
x22575
1900A
Cover in Water
constructive algorithms
,
greedy
,
implementation
,
strings
800
x22081
1146A
Love "A"
implementation
,
strings
800
x21447
1504A
Déjà Vu
constructive algorithms
,
strings
800
x21411
855A
Tom Riddle's Diary
brute force
,
implementation
,
strings
800
x20161
1825A
LuoTianyi and the Palindrome String
greedy
,
strings
800
x19289
1301A
Three Strings
implementation
,
strings
800
x19064
1682A
Palindromic Indices
greedy
,
strings
800
x19029
1144A
Diverse Strings
implementation
,
strings
800
x18852
1167A
Telephone Number
brute force
,
greedy
,
strings
800
x18791
1796A
Typical Interview Problem
brute force
,
implementation
,
strings
800
x18569
1216A
Prefixes
strings
800
x18383
1673A
Subtle Substring Subtraction
games
,
greedy
,
strings
800
x18230
1805B
The String Has a Target
greedy
,
strings
800
x18181
1894A
Secret Sport
implementation
,
strings
800
x18125
1284A
New Year and Naming
implementation
,
strings
800
x17772
1794A
Prefix and Suffix Array
strings
800
x16563
1139A
Even Substrings
implementation
,
strings
800
x16459
1820A
Yura's New Name
implementation
,
strings
800
x16365
1617A
Forbidden Subsequence
constructive algorithms
,
greedy
,
sortings
,
strings
800
x16095
202A
LLPS
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
strings
800
x15899
1789B
Serval and Inversion Magic
brute force
,
implementation
,
strings
,
two pointers
800
x15801
1654B
Prefix Removals
strings
800
x15479
1898A
Milica and String
brute force
,
implementation
,
strings
800
x15094
1189A
Keanu Reeves
strings
800
x15047
1038A
Equality
implementation
,
strings
800
x14419
831B
Keyboard Layouts
implementation
,
strings
800
x14076
735A
Ostap and Grasshopper
implementation
,
strings
800
x12303
1085A
Right-Left Cipher
implementation
,
strings
800
x12063
78A
Haiku
implementation
,
strings
800
x11975
802G
Fake News (easy)
implementation
,
strings
800
x6724
99A
Help Far Away Kingdom
strings
800
x6520
1912L
LOL Lovers
strings
800
x6342
96A
Football
implementation
,
strings
900
x149550
208A
Dubstep
strings
900
x83822
977B
Two-gram
implementation
,
strings
900
x36870
1927B
Following the String
constructive algorithms
,
greedy
,
strings
900
x30470
1941C
Rudolf and the Ugly String
dp
,
greedy
,
strings
900
x29786
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