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Codeforces Round (Div. 3)
35:38:43
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brute force
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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Name
1364A
XXXXX
brute force
,
data structures
,
number theory
,
two pointers
1200
x26756
1791D
Distinct Split
brute force
,
greedy
,
strings
1000
x26769
919B
Perfect Number
binary search
,
brute force
,
dp
,
implementation
,
number theory
1100
x26815
1359B
New Theatre Square
brute force
,
dp
,
greedy
,
implementation
,
two pointers
1000
x27043
1196A
Three Piles of Candies
brute force
,
constructive algorithms
,
math
800
x27090
1881A
Don't Try to Count
brute force
,
strings
800
x27169
550C
Divisibility by Eight
brute force
,
dp
,
math
1500
x27208
1555A
PizzaForces
brute force
,
math
900
x27221
330A
Cakeminator
brute force
,
implementation
800
x27395
1788A
One and Two
brute force
,
implementation
,
math
800
x27441
1557A
Ezzat and Two Subsequences
brute force
,
math
,
sortings
800
x27442
1324B
Yet Another Palindrome Problem
brute force
,
strings
1100
x27449
1399C
Boats Competition
brute force
,
greedy
,
two pointers
1200
x27721
1698A
XOR Mixup
bitmasks
,
brute force
800
x27761
1853A
Desorting
brute force
,
greedy
,
math
800
x27806
1328B
K-th Beautiful String
binary search
,
brute force
,
combinatorics
,
implementation
,
math
1300
x28053
1772B
Matrix Rotation
brute force
,
implementation
800
x28141
1409B
Minimum Product
brute force
,
greedy
,
math
1100
x28218
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x28501
1629A
Download More RAM
brute force
,
greedy
,
sortings
800
x28531
1851A
Escalator Conversations
brute force
,
constructive algorithms
,
math
800
x28569
1676C
Most Similar Words
brute force
,
greedy
,
implementation
,
implementation
,
math
,
strings
800
x28716
1359A
Berland Poker
brute force
,
greedy
,
math
1000
x28736
711A
Bus to Udayland
brute force
,
implementation
800
x28797
1709A
Three Doors
brute force
,
greedy
,
implementation
,
math
800
x28961
476B
Dreamoon and WiFi
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
probabilities
1300
x28975
1535B
Array Reodering
brute force
,
greedy
,
math
,
number theory
,
sortings
900
x29541
1473B
String LCM
brute force
,
math
,
number theory
,
strings
1000
x29621
1691A
Beat The Odds
brute force
,
greedy
,
math
800
x29814
1339A
Filling Diamonds
brute force
,
dp
,
implementation
,
math
900
x31032
1462C
Unique Number
brute force
,
greedy
,
math
900
x31174
1490C
Sum of Cubes
binary search
,
brute force
,
brute force
,
math
1100
x31285
1633A
Div. 7
brute force
800
x31830
1850D
Balanced Round
brute force
,
greedy
,
implementation
,
sortings
900
x32110
894A
QAQ
brute force
,
dp
800
x32833
1931A
Recovering a Small String
brute force
,
strings
800
x33355
320A
Magic Numbers
brute force
,
greedy
900
x33529
214A
System of Equations
brute force
800
x33581
1703C
Cypher
brute force
,
implementation
,
strings
800
x34036
1363A
Odd Selection
brute force
,
implementation
,
math
1200
x34321
466C
Number of Ways
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x34519
1538A
Stone Game
brute force
,
dp
,
greedy
800
x35690
467B
Fedor and New Game
bitmasks
,
brute force
,
constructive algorithms
,
implementation
1100
x35725
550A
Two Substrings
brute force
,
dp
,
greedy
,
implementation
,
strings
1500
x36207
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x36711
1097A
Gennady and a Card Game
brute force
,
implementation
800
x36961
1872A
Two Vessels
brute force
,
greedy
,
math
800
x37159
509A
Maximum in Table
brute force
,
implementation
800
x37204
1915B
Not Quite Latin Square
bitmasks
,
brute force
,
implementation
800
x38219
1941A
Rudolf and the Ticket
brute force
,
math
800
x38526
327A
Flipping Game
brute force
,
dp
,
implementation
1200
x39906
935A
Fafa and his Company
brute force
,
implementation
800
x41460
1520B
Ordinary Numbers
brute force
,
math
,
number theory
800
x42723
1873B
Good Kid
brute force
,
greedy
,
math
800
x43968
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x44205
1343A
Candies
brute force
,
math
900
x46202
1535A
Fair Playoff
brute force
,
implementation
800
x46217
1475B
New Year's Number
brute force
,
dp
,
math
900
x46304
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x47603
1873A
Short Sort
brute force
,
implementation
800
x48427
363B
Fence
brute force
,
dp
1100
x49048
80A
Panoramix's Prediction
brute force
800
x49386
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49520
1512A
Spy Detected!
brute force
,
implementation
800
x59764
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x62320
189A
Cut Ribbon
brute force
,
dp
1300
x62329
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67107
155A
I_love_\%username\%
brute force
800
x70445
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x70663
268A
Games
brute force
800
x80736
25A
IQ test
brute force
1300
x80917
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x83769
479A
Expression
brute force
,
math
1000
x88415
122A
Lucky Division
brute force
,
number theory
1000
x115735
271A
Beautiful Year
brute force
800
x127202
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x167134
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x192706
231A
Team
brute force
,
greedy
800
x298433
4A
Watermelon
brute force
,
math
800
x480191
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