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Codeforces Round 940 (Div. 2) and CodeCraft-23
39:39:23
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Difficulty:
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greedy
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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Name
1332C
K-Complete Word
dfs and similar
,
dsu
,
greedy
,
implementation
,
strings
1500
x15546
1304C
Air Conditioner
dp
,
greedy
,
implementation
,
sortings
,
two pointers
1500
x15669
1400C
Binary String Reconstruction
2-sat
,
brute force
,
constructive algorithms
,
greedy
1500
x16691
1201B
Zero Array
greedy
,
math
1500
x17573
1399D
Binary String To Subsequences
constructive algorithms
,
data structures
,
greedy
,
implementation
1500
x17621
1516B
AGAGA XOOORRR
bitmasks
,
brute force
,
dp
,
greedy
1500
x17970
1418C
Mortal Kombat Tower
dp
,
graphs
,
greedy
,
shortest paths
1500
x18014
1389C
Good String
brute force
,
dp
,
greedy
,
two pointers
1500
x18295
1409D
Decrease the Sum of Digits
greedy
,
math
1500
x18607
1368B
Codeforces Subsequences
brute force
,
constructive algorithms
,
greedy
,
math
,
strings
1500
x18969
1526C1
Potions (Easy Version)
brute force
,
data structures
,
dp
,
greedy
1500
x21051
1338A
Powered Addition
greedy
,
math
1500
x22515
276C
Little Girl and Maximum Sum
data structures
,
greedy
,
implementation
,
sortings
1500
x23839
545C
Woodcutters
dp
,
greedy
1500
x26108
550A
Two Substrings
brute force
,
dp
,
greedy
,
implementation
,
strings
1500
x36092
1346B
Boot Camp
*special problem
,
greedy
1400
x1178
174B
File List
dp
,
greedy
,
implementation
1400
x2188
45I
TCMCF+++
greedy
1400
x2297
413C
Jeopardy!
greedy
,
math
1400
x2299
159A
Friends or Not
*special problem
,
greedy
,
implementation
1400
x2451
523C
Name Quest
*special problem
,
greedy
1400
x2466
929A
Прокат велосипедов
*special problem
,
greedy
,
implementation
1400
x2491
335A
Banana
binary search
,
constructive algorithms
,
greedy
1400
x2501
42A
Guilty --- to the kitchen!
greedy
,
implementation
1400
x2738
1046C
Space Formula
greedy
1400
x3029
245E
Mishap in Club
greedy
,
implementation
1400
x3216
120F
Spiders
dp
,
greedy
,
trees
1400
x3497
270B
Multithreading
data structures
,
greedy
,
implementation
1400
x4068
526B
Om Nom and Dark Park
dfs and similar
,
greedy
,
implementation
1400
x4463
111A
Petya and Inequiations
greedy
1400
x4612
1773E
Easy Assembly
greedy
,
sortings
1400
x4622
261A
Maxim and Discounts
greedy
,
sortings
1400
x5083
994B
Knights of a Polygonal Table
greedy
,
implementation
,
sortings
1400
x5512
313C
Ilya and Matrix
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x5514
203C
Photographer
greedy
,
sortings
1400
x5562
1162B
Double Matrix
brute force
,
greedy
1400
x5702
205B
Little Elephant and Sorting
brute force
,
greedy
1400
x5927
808C
Tea Party
constructive algorithms
,
greedy
,
sortings
1400
x5950
472C
Design Tutorial: Make It Nondeterministic
greedy
1400
x6313
1425A
Arena of Greed
games
,
greedy
1400
x6324
379C
New Year Ratings Change
greedy
,
sortings
1400
x6490
435B
Pasha Maximizes
greedy
1400
x6726
441B
Valera and Fruits
greedy
,
implementation
1400
x6918
995B
Suit and Tie
greedy
,
implementation
,
math
1400
x7006
1061B
Views Matter
greedy
,
implementation
,
sortings
1400
x7206
762B
USB vs. PS/2
greedy
,
implementation
,
sortings
,
two pointers
1400
x7443
479B
Towers
brute force
,
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x7535
518B
Tanya and Postcard
greedy
,
implementation
,
strings
1400
x7786
1088C
Ehab and a 2-operation task
constructive algorithms
,
greedy
,
math
1400
x7927
604B
More Cowbell
binary search
,
greedy
1400
x8226
548B
Mike and Fun
brute force
,
dp
,
greedy
,
implementation
1400
x8257
1097C
Yuhao and a Parenthesis
greedy
,
implementation
1400
x8300
719B
Anatoly and Cockroaches
greedy
1400
x8330
1896C
Matching Arrays
binary search
,
constructive algorithms
,
greedy
,
sortings
1400
x8510
416A
Guess a number!
greedy
,
implementation
,
two pointers
1400
x8629
940B
Our Tanya is Crying Out Loud
dp
,
greedy
1400
x8632
1951C
Ticket Hoarding
greedy
,
math
,
sortings
1400
x8650
1863D
Two-Colored Dominoes
constructive algorithms
,
greedy
1400
x8871
920C
Swap Adjacent Elements
dfs and similar
,
greedy
,
math
,
sortings
,
two pointers
1400
x8975
1883G1
Dances (Easy version)
binary search
,
greedy
,
two pointers
1400
x8988
1764C
Doremy's City Construction
graphs
,
greedy
1400
x9022
337B
Routine Problem
greedy
,
math
,
number theory
1400
x9071
1761C
Set Construction
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
1400
x9126
525B
Pasha and String
constructive algorithms
,
greedy
,
math
,
strings
1400
x9163
1266C
Diverse Matrix
constructive algorithms
,
greedy
,
math
,
number theory
1400
x9342
1131B
Draw!
greedy
,
implementation
1400
x9453
804B
Minimum number of steps
combinatorics
,
greedy
,
implementation
,
math
1400
x9511
1735C
Phase Shift
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
strings
1400
x9524
1932D
Card Game
greedy
,
implementation
1400
x9612
1408B
Arrays Sum
constructive algorithms
,
greedy
,
math
1400
x9743
757B
Bash's Big Day
greedy
,
math
,
number theory
1400
x9781
1909C
Heavy Intervals
constructive algorithms
,
data structures
,
dsu
,
greedy
,
math
,
sortings
1400
x9817
534B
Covered Path
dp
,
greedy
,
math
1400
x9824
1009B
Minimum Ternary String
greedy
,
implementation
1400
x9881
1144D
Equalize Them All
constructive algorithms
,
greedy
1400
x9899
797B
Odd sum
dp
,
greedy
,
implementation
1400
x10117
1102B
Array K-Coloring
greedy
,
sortings
1400
x10136
1903C
Theofanis' Nightmare
constructive algorithms
,
greedy
1400
x10209
1740C
Bricks and Bags
constructive algorithms
,
games
,
greedy
,
sortings
1400
x10513
1901C
Add, Divide and Floor
constructive algorithms
,
greedy
,
math
1400
x10557
1110B
Tape
greedy
,
sortings
1400
x10564
1427B
Chess Cheater
greedy
,
implementation
,
sortings
1400
x10671
1875C
Jellyfish and Green Apple
bitmasks
,
greedy
,
math
,
number theory
1400
x10682
1251B
Binary Palindromes
greedy
,
strings
1400
x10711
1824A
LuoTianyi and the Show
greedy
,
implementation
1400
x10742
1878E
Iva & Pav
binary search
,
bitmasks
,
data structures
,
greedy
1400
x10857
1905C
Largest Subsequence
greedy
,
strings
1400
x10877
1253B
Silly Mistake
greedy
,
implementation
1400
x10895
1914E1
Game with Marbles (Easy Version)
brute force
,
games
,
greedy
,
sortings
1400
x10996
1914E2
Game with Marbles (Hard Version)
games
,
greedy
,
sortings
1400
x11073
1263B
PIN Codes
greedy
,
implementation
1400
x11103
1282B1
K for the Price of One (Easy Version)
dp
,
greedy
,
sortings
1400
x11156
1696C
Fishingprince Plays With Array
constructive algorithms
,
greedy
,
implementation
,
math
1400
x11280
388A
Fox and Box Accumulation
greedy
,
sortings
1400
x11323
1844D
Row Major
constructive algorithms
,
greedy
,
math
,
number theory
,
strings
1400
x11562
445B
DZY Loves Chemistry
dfs and similar
,
dsu
,
greedy
1400
x11980
1684C
Column Swapping
brute force
,
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x11992
1276A
As Simple as One and Two
dp
,
greedy
1400
x12020
1800E1
Unforgivable Curse (easy version)
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
strings
1400
x12065
1847C
Vampiric Powers, anyone?
bitmasks
,
brute force
,
dp
,
greedy
1400
x12140
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