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Codeforces Round 940 (Div. 2)
4 days
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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
x350555
112A
Petya and Strings
implementation
,
strings
800
x207393
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x196596
281A
Word Capitalization
implementation
,
strings
800
x194510
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x191485
59A
Word
implementation
,
strings
800
x160532
734A
Anton and Danik
implementation
,
strings
800
x138728
41A
Translation
implementation
,
strings
800
x133729
520A
Pangram
implementation
,
strings
800
x88927
785A
Anton and Polyhedrons
implementation
,
strings
800
x81526
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77394
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x61655
1367A
Short Substrings
implementation
,
strings
800
x54480
1791A
Codeforces Checking
implementation
,
strings
800
x54184
1619A
Square String?
implementation
,
strings
800
x47884
1829A
Love Story
implementation
,
strings
800
x45179
731A
Night at the Museum
implementation
,
strings
800
x42816
1760B
Atilla's Favorite Problem
greedy
,
implementation
,
strings
800
x41301
1850C
Word on the Paper
implementation
,
strings
800
x40405
1927A
Make it White
greedy
,
strings
800
x39131
1579A
Casimir's String Solitaire
math
,
strings
800
x37652
1607A
Linear Keyboard
implementation
,
strings
800
x35862
1790A
Polycarp and the Day of Pi
implementation
,
math
,
strings
800
x35449
978B
File Name
greedy
,
strings
800
x34811
1703C
Cypher
brute force
,
implementation
,
strings
800
x33894
1650A
Deletions of Two Adjacent Letters
implementation
,
strings
800
x33744
1931A
Recovering a Small String
brute force
,
strings
800
x33118
1840A
Cipher Shifer
implementation
,
strings
,
two pointers
800
x32360
1833A
Musical Puzzle
implementation
,
strings
800
x31403
1862A
Gift Carpet
dp
,
greedy
,
implementation
,
strings
800
x30471
1303A
Erasing Zeroes
implementation
,
strings
800
x30291
1811A
Insert Digit
greedy
,
math
,
strings
800
x29875
1800A
Is It a Cat?
implementation
,
strings
800
x29815
1741A
Compare T-Shirt Sizes
implementation
,
implementation
,
strings
800
x29661
1567A
Domino Disaster
implementation
,
strings
800
x29569
1914A
Problemsolving Log
implementation
,
strings
800
x29374
1729B
Decode String
greedy
,
strings
800
x29124
1807C
Find and Replace
greedy
,
implementation
,
strings
800
x28995
1220A
Cards
implementation
,
sortings
,
strings
800
x28740
1676C
Most Similar Words
brute force
,
greedy
,
implementation
,
implementation
,
math
,
strings
800
x28615
1759A
Yes-Yes?
implementation
,
strings
800
x28603
1551B1
Wonderful Coloring - 1
greedy
,
strings
800
x28566
1397A
Juggling Letters
greedy
,
strings
800
x28070
1925A
We Got Everything Covered!
constructive algorithms
,
greedy
,
strings
800
x26904
1881A
Don't Try to Count
brute force
,
strings
800
x26884
1400A
String Similarity
constructive algorithms
,
strings
800
x26503
1462B
Last Year's Substring
dp
,
implementation
,
strings
800
x26473
1846B
Rudolph and Tic-Tac-Toe
brute force
,
implementation
,
strings
800
x25902
1547B
Alphabetical Strings
greedy
,
implementation
,
strings
800
x25895
1922A
Tricky Template
constructive algorithms
,
implementation
,
strings
800
x25656
1480A
Yet Another String Game
games
,
greedy
,
strings
800
x25381
1935A
Entertainment in MAC
constructive algorithms
,
strings
800
x24965
1481A
Space Navigation
greedy
,
strings
800
x24626
1832A
New Palindrome
strings
800
x24572
1758A
SSeeeeiinngg DDoouubbllee
constructive algorithms
,
strings
800
x24265
1539B
Love Song
dp
,
implementation
,
strings
800
x23698
1634A
Reverse and Concatenate
greedy
,
strings
800
x23608
1552A
Subsequence Permutation
sortings
,
strings
800
x23477
1684A
Digit Minimization
constructive algorithms
,
games
,
math
,
strings
800
x23431
1795A
Two Towers
brute force
,
implementation
,
strings
800
x23188
1779A
Hall of Fame
constructive algorithms
,
greedy
,
strings
800
x22859
1706A
Another String Minimization Problem
2-sat
,
constructive algorithms
,
greedy
,
string suffix structures
,
strings
800
x22521
1504A
Déjà Vu
constructive algorithms
,
strings
800
x21359
1900A
Cover in Water
constructive algorithms
,
greedy
,
implementation
,
strings
800
x21262
1146A
Love "A"
implementation
,
strings
800
x21232
855A
Tom Riddle's Diary
brute force
,
implementation
,
strings
800
x19982
1825A
LuoTianyi and the Palindrome String
greedy
,
strings
800
x19229
1301A
Three Strings
implementation
,
strings
800
x18986
1682A
Palindromic Indices
greedy
,
strings
800
x18983
1167A
Telephone Number
brute force
,
greedy
,
strings
800
x18631
1144A
Diverse Strings
implementation
,
strings
800
x18604
1796A
Typical Interview Problem
brute force
,
implementation
,
strings
800
x18512
1216A
Prefixes
strings
800
x18317
1673A
Subtle Substring Subtraction
games
,
greedy
,
strings
800
x18187
1805B
The String Has a Target
greedy
,
strings
800
x18133
1894A
Secret Sport
implementation
,
strings
800
x17933
1284A
New Year and Naming
implementation
,
strings
800
x17762
1794A
Prefix and Suffix Array
strings
800
x16505
1139A
Even Substrings
implementation
,
strings
800
x16438
1820A
Yura's New Name
implementation
,
strings
800
x16306
1617A
Forbidden Subsequence
constructive algorithms
,
greedy
,
sortings
,
strings
800
x16068
202A
LLPS
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
strings
800
x15796
1789B
Serval and Inversion Magic
brute force
,
implementation
,
strings
,
two pointers
800
x15720
1654B
Prefix Removals
strings
800
x15459
1189A
Keanu Reeves
strings
800
x14926
1898A
Milica and String
brute force
,
implementation
,
strings
800
x14920
1038A
Equality
implementation
,
strings
800
x14359
831B
Keyboard Layouts
implementation
,
strings
800
x14033
735A
Ostap and Grasshopper
implementation
,
strings
800
x12266
78A
Haiku
implementation
,
strings
800
x11876
1085A
Right-Left Cipher
implementation
,
strings
800
x11854
802G
Fake News (easy)
implementation
,
strings
800
x6668
99A
Help Far Away Kingdom
strings
800
x6497
1912L
LOL Lovers
strings
800
x6165
96A
Football
implementation
,
strings
900
x148068
208A
Dubstep
strings
900
x83000
977B
Two-gram
implementation
,
strings
900
x36452
1927B
Following the String
constructive algorithms
,
greedy
,
strings
900
x29847
1941C
Rudolf and the Ugly String
dp
,
greedy
,
strings
900
x28899
1915D
Unnatural Language Processing
greedy
,
implementation
,
strings
900
x27237
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