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Codeforces Round (Div. 3)
44:56:09
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Difficulty:
—
implementation
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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Status
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Custom test
Problems
#
Name
282A
Bit++
implementation
800
x235402
158A
Next Round
*special problem
,
implementation
800
x231907
263A
Beautiful Matrix
implementation
800
x224036
112A
Petya and Strings
implementation
,
strings
800
x208627
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x197714
281A
Word Capitalization
implementation
,
strings
800
x195585
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x192689
118A
String Task
implementation
,
strings
1000
x180866
791A
Bear and Big Brother
implementation
800
x178304
266A
Stones on the Table
implementation
800
x177589
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x167121
59A
Word
implementation
,
strings
800
x161529
69A
Young Physicist
implementation
,
math
1000
x154683
977A
Wrong Subtraction
implementation
800
x154430
96A
Football
implementation
,
strings
900
x148724
110A
Nearly Lucky Number
implementation
800
x142119
734A
Anton and Danik
implementation
,
strings
800
x139736
41A
Translation
implementation
,
strings
800
x134534
116A
Tram
implementation
800
x131737
677A
Vanya and Fence
implementation
800
x130231
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x126443
1030A
In Search of an Easy Problem
implementation
800
x119556
467A
George and Accommodation
implementation
800
x113440
344A
Magnets
implementation
800
x111439
486A
Calculating Function
implementation
,
math
800
x109079
136A
Presents
implementation
800
x108828
200B
Drinks
implementation
,
math
800
x107464
61A
Ultra-Fast Mathematician
implementation
800
x103348
228A
Is your horseshoe on the other hoof?
implementation
800
x101673
133A
HQ9+
implementation
900
x99759
705A
Hulk
implementation
800
x99178
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x94172
469A
I Wanna Be the Guy
greedy
,
implementation
800
x91107
520A
Pangram
implementation
,
strings
800
x89531
144A
Arrival of the General
implementation
800
x88754
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x86916
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x83761
443A
Anton and Letters
constructive algorithms
,
implementation
800
x83686
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x82291
785A
Anton and Polyhedrons
implementation
,
strings
800
x81968
131A
cAPS lOCK
implementation
,
strings
1000
x81053
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77710
4C
Registration System
data structures
,
hashing
,
implementation
1300
x76884
510A
Fox And Snake
implementation
800
x76759
427A
Police Recruits
implementation
800
x72266
1352A
Sum of Round Numbers
implementation
,
math
800
x71632
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x70973
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x70651
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70532
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x69682
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67102
581A
Vasya the Hipster
implementation
,
math
800
x66978
339B
Xenia and Ringroad
implementation
1000
x66271
151A
Soft Drinking
implementation
,
math
800
x65553
1742A
Sum
implementation
800
x64293
451A
Game With Sticks
implementation
900
x62503
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x62310
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60121
1512A
Spy Detected!
brute force
,
implementation
800
x59760
1692A
Marathon
implementation
800
x59422
466A
Cheap Travel
implementation
1200
x59402
32B
Borze
expression parsing
,
implementation
800
x58502
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x58185
1676A
Lucky?
implementation
800
x57741
758A
Holiday Of Equality
implementation
,
math
800
x57122
1669A
Division?
implementation
800
x56812
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56534
1560A
Dislike of Threes
implementation
800
x55719
1807A
Plus or Minus
implementation
800
x55407
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55376
1367A
Short Substrings
implementation
,
strings
800
x54738
1791A
Codeforces Checking
implementation
,
strings
800
x54651
313A
Ilya and Bank Account
implementation
,
number theory
900
x53474
703A
Mishka and Game
implementation
800
x53448
1760A
Medium Number
implementation
,
sortings
800
x53346
431A
Black Square
implementation
800
x51309
1850A
To My Critics
implementation
,
sortings
800
x50782
500A
New Year Transportation
dfs and similar
,
graphs
,
implementation
1000
x50127
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49515
1915A
Odd One Out
bitmasks
,
implementation
800
x49206
1433A
Boring Apartments
implementation
,
math
800
x49181
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48602
1873A
Short Sort
brute force
,
implementation
800
x48412
1619A
Square String?
implementation
,
strings
800
x48384
520B
Two Buttons
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
,
shortest paths
1400
x47790
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x47597
1722A
Spell Check
implementation
800
x46627
492A
Vanya and Cubes
implementation
800
x46593
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46351
1535A
Fair Playoff
brute force
,
implementation
800
x46203
707A
Brain's Photos
implementation
800
x46111
1829A
Love Story
implementation
,
strings
800
x45621
514A
Chewbaсca and Number
greedy
,
implementation
1200
x45474
1426A
Floor Number
implementation
,
math
800
x45427
1703B
ICPC Balloons
data structures
,
implementation
800
x45145
474B
Worms
binary search
,
implementation
1200
x44686
379A
New Year Candles
implementation
1000
x44382
489C
Given Length and Sum of Digits...
dp
,
greedy
,
implementation
1400
x44328
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x44201
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44176
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