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Before contest
Codeforces Round 945 (Div. 2)
42:24:42
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combine-tags-by-or
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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
#
Name
1535A
Fair Playoff
brute force
,
implementation
800
x46503
1283A
Minutes Before the New Year
math
800
x46668
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46679
492A
Vanya and Cubes
implementation
800
x46893
1722A
Spell Check
implementation
800
x47100
1472B
Fair Division
dp
,
greedy
,
math
800
x47603
1353B
Two Arrays And Swaps
greedy
,
sortings
800
x47626
1360A
Minimal Square
greedy
,
math
800
x48114
1551A
Polycarp and Coins
greedy
,
math
800
x48532
1619A
Square String?
implementation
,
strings
800
x48622
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48943
1873A
Short Sort
brute force
,
implementation
800
x49000
1433A
Boring Apartments
implementation
,
math
800
x49413
80A
Panoramix's Prediction
brute force
800
x49744
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49774
1624A
Plus One on the Subset
math
800
x49877
1915A
Odd One Out
bitmasks
,
implementation
800
x50010
1367B
Even Array
greedy
,
math
800
x50411
1374A
Required Remainder
math
800
x50725
1850A
To My Critics
implementation
,
sortings
800
x51316
431A
Black Square
implementation
800
x51642
9A
Die Roll
math
,
probabilities
800
x52718
703A
Mishka and Game
implementation
800
x53685
1343B
Balanced Array
constructive algorithms
,
math
800
x53781
1760A
Medium Number
implementation
,
sortings
800
x54047
1367A
Short Substrings
implementation
,
strings
800
x54942
1791A
Codeforces Checking
implementation
,
strings
800
x55244
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55680
1560A
Dislike of Threes
implementation
800
x56038
1807A
Plus or Minus
implementation
800
x56047
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56769
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x57113
1669A
Division?
implementation
800
x57405
758A
Holiday Of Equality
implementation
,
math
800
x57475
1676A
Lucky?
implementation
800
x58263
32B
Borze
expression parsing
,
implementation
800
x58986
1512A
Spy Detected!
brute force
,
implementation
800
x60107
1692A
Marathon
implementation
800
x60170
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60613
630A
Again Twenty Five!
number theory
800
x62193
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x62648
1399A
Remove Smallest
greedy
,
sortings
800
x62900
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x63025
1742A
Sum
implementation
800
x65014
151A
Soft Drinking
implementation
,
math
800
x66035
1154A
Restoring Three Numbers
math
800
x66555
581A
Vasya the Hipster
implementation
,
math
800
x67314
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67529
155A
I_love_\%username\%
brute force
800
x70755
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x71039
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x71095
1352A
Sum of Round Numbers
implementation
,
math
800
x72316
427A
Police Recruits
implementation
800
x72713
510A
Fox And Snake
implementation
800
x77332
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x78099
1335A
Candies and Two Sisters
math
800
x78874
268A
Games
brute force
800
x81189
785A
Anton and Polyhedrons
implementation
,
strings
800
x82506
443A
Anton and Letters
constructive algorithms
,
implementation
800
x84206
996A
Hit the Lottery
dp
,
greedy
800
x84539
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x87353
144A
Arrival of the General
implementation
800
x89265
520A
Pangram
implementation
,
strings
800
x90129
469A
I Wanna Be the Guy
greedy
,
implementation
800
x91636
1328A
Divisibility Problem
math
800
x93704
705A
Hulk
implementation
800
x99703
228A
Is your horseshoe on the other hoof?
implementation
800
x102335
61A
Ultra-Fast Mathematician
implementation
800
x103928
200B
Drinks
implementation
,
math
800
x108167
136A
Presents
implementation
800
x109475
486A
Calculating Function
implementation
,
math
800
x109759
344A
Magnets
implementation
800
x112200
467A
George and Accommodation
implementation
800
x114157
1030A
In Search of an Easy Problem
implementation
800
x120417
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x127170
271A
Beautiful Year
brute force
800
x128079
677A
Vanya and Fence
implementation
800
x131192
116A
Tram
implementation
800
x132518
41A
Translation
implementation
,
strings
800
x135433
734A
Anton and Danik
implementation
,
strings
800
x140770
110A
Nearly Lucky Number
implementation
800
x143061
977A
Wrong Subtraction
implementation
800
x155493
59A
Word
implementation
,
strings
800
x162714
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x168277
617A
Elephant
math
800
x170772
266A
Stones on the Table
implementation
800
x178622
791A
Bear and Big Brother
implementation
800
x179596
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x194041
281A
Word Capitalization
implementation
,
strings
800
x196785
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x198932
112A
Petya and Strings
implementation
,
strings
800
x209871
263A
Beautiful Matrix
implementation
800
x225538
50A
Domino piling
greedy
,
math
800
x229508
158A
Next Round
*special problem
,
implementation
800
x233170
282A
Bit++
implementation
800
x237297
231A
Team
brute force
,
greedy
800
x300432
71A
Way Too Long Words
strings
800
x354950
4A
Watermelon
brute force
,
math
800
x483369
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