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Before contest
Codeforces Round 941 (Div. 1)
14:00:27
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Before contest
Codeforces Round 941 (Div. 2)
14:00:27
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strings
combine-tags-by-or
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2-sat
binary search
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dfs and similar
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Problems
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Custom test
Problems
#
Name
71A
Way Too Long Words
strings
800
x352116
112A
Petya and Strings
implementation
,
strings
800
x208322
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x197413
281A
Word Capitalization
implementation
,
strings
800
x195285
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x192354
118A
String Task
implementation
,
strings
1000
x180665
59A
Word
implementation
,
strings
800
x161243
96A
Football
implementation
,
strings
900
x148527
734A
Anton and Danik
implementation
,
strings
800
x139425
41A
Translation
implementation
,
strings
800
x134312
58A
Chat room
greedy
,
strings
1000
x121802
520A
Pangram
implementation
,
strings
800
x89376
208A
Dubstep
strings
900
x83246
785A
Anton and Polyhedrons
implementation
,
strings
800
x81840
131A
cAPS lOCK
implementation
,
strings
1000
x80975
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77621
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x62158
1367A
Short Substrings
implementation
,
strings
800
x54670
1791A
Codeforces Checking
implementation
,
strings
800
x54545
43A
Football
strings
1000
x51886
1619A
Square String?
implementation
,
strings
800
x48071
1829A
Love Story
implementation
,
strings
800
x45545
1374C
Move Brackets
greedy
,
strings
1000
x43219
731A
Night at the Museum
implementation
,
strings
800
x42975
1760B
Atilla's Favorite Problem
greedy
,
implementation
,
strings
800
x41488
1850C
Word on the Paper
implementation
,
strings
800
x40711
1927A
Make it White
greedy
,
strings
800
x39363
1579A
Casimir's String Solitaire
math
,
strings
800
x37730
499B
Lecture
implementation
,
strings
1000
x37356
977B
Two-gram
implementation
,
strings
900
x36615
550A
Two Substrings
brute force
,
dp
,
greedy
,
implementation
,
strings
1500
x36167
1607A
Linear Keyboard
implementation
,
strings
800
x35945
1790A
Polycarp and the Day of Pi
implementation
,
math
,
strings
800
x35520
978B
File Name
greedy
,
strings
800
x34912
1703C
Cypher
brute force
,
implementation
,
strings
800
x33994
1650A
Deletions of Two Adjacent Letters
implementation
,
strings
800
x33809
1931A
Recovering a Small String
brute force
,
strings
800
x33291
1840A
Cipher Shifer
implementation
,
strings
,
two pointers
800
x32431
1833A
Musical Puzzle
implementation
,
strings
800
x31471
1862A
Gift Carpet
dp
,
greedy
,
implementation
,
strings
800
x30572
1303A
Erasing Zeroes
implementation
,
strings
800
x30432
1927B
Following the String
constructive algorithms
,
greedy
,
strings
900
x30078
1811A
Insert Digit
greedy
,
math
,
strings
800
x29945
1800A
Is It a Cat?
implementation
,
strings
800
x29897
1741A
Compare T-Shirt Sizes
implementation
,
implementation
,
strings
800
x29741
1567A
Domino Disaster
implementation
,
strings
800
x29599
1473B
String LCM
brute force
,
math
,
number theory
,
strings
1000
x29597
1914A
Problemsolving Log
implementation
,
strings
800
x29483
1729B
Decode String
greedy
,
strings
800
x29301
1941C
Rudolf and the Ugly String
dp
,
greedy
,
strings
900
x29214
1807C
Find and Replace
greedy
,
implementation
,
strings
800
x29072
1220A
Cards
implementation
,
sortings
,
strings
800
x28782
766A
Mahmoud and Longest Uncommon Subsequence
constructive algorithms
,
strings
1000
x28701
1676C
Most Similar Words
brute force
,
greedy
,
implementation
,
implementation
,
math
,
strings
800
x28689
1759A
Yes-Yes?
implementation
,
strings
800
x28683
1551B1
Wonderful Coloring - 1
greedy
,
strings
800
x28606
1397A
Juggling Letters
greedy
,
strings
800
x28092
1324B
Yet Another Palindrome Problem
brute force
,
strings
1100
x27411
1915D
Unnatural Language Processing
greedy
,
implementation
,
strings
900
x27401
1881A
Don't Try to Count
brute force
,
strings
800
x27095
1925A
We Got Everything Covered!
constructive algorithms
,
greedy
,
strings
800
x27015
1791D
Distinct Split
brute force
,
greedy
,
strings
1000
x26709
1400A
String Similarity
constructive algorithms
,
strings
800
x26531
1462B
Last Year's Substring
dp
,
implementation
,
strings
800
x26498
1883B
Chemistry
strings
900
x26455
746B
Decoding
implementation
,
strings
900
x26128
1846B
Rudolph and Tic-Tac-Toe
brute force
,
implementation
,
strings
800
x25970
1547B
Alphabetical Strings
greedy
,
implementation
,
strings
800
x25936
219A
k-String
implementation
,
strings
1000
x25925
1922A
Tricky Template
constructive algorithms
,
implementation
,
strings
800
x25742
1480A
Yet Another String Game
games
,
greedy
,
strings
800
x25402
1935A
Entertainment in MAC
constructive algorithms
,
strings
800
x25211
1832A
New Palindrome
strings
800
x24721
1481A
Space Navigation
greedy
,
strings
800
x24634
1758A
SSeeeeiinngg DDoouubbllee
constructive algorithms
,
strings
800
x24334
1703D
Double Strings
brute force
,
data structures
,
strings
1100
x24220
1800B
Count the Number of Pairs
greedy
,
strings
1000
x23869
1539B
Love Song
dp
,
implementation
,
strings
800
x23729
1369B
AccurateLee
greedy
,
implementation
,
strings
1200
x23722
1634A
Reverse and Concatenate
greedy
,
strings
800
x23630
1552A
Subsequence Permutation
sortings
,
strings
800
x23492
1684A
Digit Minimization
constructive algorithms
,
games
,
math
,
strings
800
x23444
1506C
Double-ended Strings
brute force
,
implementation
,
strings
1000
x23286
1795A
Two Towers
brute force
,
implementation
,
strings
800
x23212
1342B
Binary Period
constructive algorithms
,
strings
1100
x23129
1907B
YetnotherrokenKeoard
data structures
,
implementation
,
strings
1000
x23032
1779A
Hall of Fame
constructive algorithms
,
greedy
,
strings
800
x22868
1674C
Infinite Replacement
combinatorics
,
implementation
,
strings
1000
x22850
1363B
Subsequence Hate
implementation
,
strings
1400
x22843
1606A
AB Balance
strings
900
x22670
1706A
Another String Minimization Problem
2-sat
,
constructive algorithms
,
greedy
,
string suffix structures
,
strings
800
x22533
1626B
Minor Reduction
greedy
,
strings
1100
x22290
1005B
Delete from the Left
brute force
,
implementation
,
strings
900
x22257
508B
Anton and currency you all know
greedy
,
math
,
strings
1300
x22042
1800D
Remove Two Letters
data structures
,
greedy
,
hashing
,
strings
1200
x21594
1900A
Cover in Water
constructive algorithms
,
greedy
,
implementation
,
strings
800
x21531
1913B
Swap and Delete
strings
1000
x21433
1146A
Love "A"
implementation
,
strings
800
x21389
1504A
Déjà Vu
constructive algorithms
,
strings
800
x21383
798A
Mike and palindrome
brute force
,
constructive algorithms
,
strings
1000
x21023
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