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Codeforces Round 943 (Div. 3)
10:20:09
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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
x235594
158A
Next Round
*special problem
,
implementation
800
x232024
263A
Beautiful Matrix
implementation
800
x224164
112A
Petya and Strings
implementation
,
strings
800
x208734
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x197830
281A
Word Capitalization
implementation
,
strings
800
x195697
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x192797
118A
String Task
implementation
,
strings
1000
x180943
791A
Bear and Big Brother
implementation
800
x178423
266A
Stones on the Table
implementation
800
x177676
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x167219
59A
Word
implementation
,
strings
800
x161653
69A
Young Physicist
implementation
,
math
1000
x154750
977A
Wrong Subtraction
implementation
800
x154551
96A
Football
implementation
,
strings
900
x148792
110A
Nearly Lucky Number
implementation
800
x142222
734A
Anton and Danik
implementation
,
strings
800
x139856
41A
Translation
implementation
,
strings
800
x134641
116A
Tram
implementation
800
x131810
677A
Vanya and Fence
implementation
800
x130319
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x126505
1030A
In Search of an Easy Problem
implementation
800
x119630
467A
George and Accommodation
implementation
800
x113504
344A
Magnets
implementation
800
x111509
486A
Calculating Function
implementation
,
math
800
x109135
136A
Presents
implementation
800
x108879
200B
Drinks
implementation
,
math
800
x107515
61A
Ultra-Fast Mathematician
implementation
800
x103395
228A
Is your horseshoe on the other hoof?
implementation
800
x101730
133A
HQ9+
implementation
900
x99797
705A
Hulk
implementation
800
x99222
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x94232
469A
I Wanna Be the Guy
greedy
,
implementation
800
x91156
520A
Pangram
implementation
,
strings
800
x89580
144A
Arrival of the General
implementation
800
x88785
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x86947
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x83789
443A
Anton and Letters
constructive algorithms
,
implementation
800
x83735
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x82313
785A
Anton and Polyhedrons
implementation
,
strings
800
x82010
131A
cAPS lOCK
implementation
,
strings
1000
x81089
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77742
4C
Registration System
data structures
,
hashing
,
implementation
1300
x76954
510A
Fox And Snake
implementation
800
x76809
427A
Police Recruits
implementation
800
x72318
1352A
Sum of Round Numbers
implementation
,
math
800
x71675
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x71004
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x70693
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70568
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x69717
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67137
581A
Vasya the Hipster
implementation
,
math
800
x67013
339B
Xenia and Ringroad
implementation
1000
x66301
151A
Soft Drinking
implementation
,
math
800
x65586
1742A
Sum
implementation
800
x64362
451A
Game With Sticks
implementation
900
x62520
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x62342
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60153
1512A
Spy Detected!
brute force
,
implementation
800
x59784
1692A
Marathon
implementation
800
x59594
466A
Cheap Travel
implementation
1200
x59427
32B
Borze
expression parsing
,
implementation
800
x58532
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x58222
1676A
Lucky?
implementation
800
x57782
758A
Holiday Of Equality
implementation
,
math
800
x57166
1669A
Division?
implementation
800
x56858
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56553
1560A
Dislike of Threes
implementation
800
x55753
1807A
Plus or Minus
implementation
800
x55460
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55398
1367A
Short Substrings
implementation
,
strings
800
x54762
1791A
Codeforces Checking
implementation
,
strings
800
x54696
1760A
Medium Number
implementation
,
sortings
800
x53504
313A
Ilya and Bank Account
implementation
,
number theory
900
x53493
703A
Mishka and Game
implementation
800
x53469
431A
Black Square
implementation
800
x51342
1850A
To My Critics
implementation
,
sortings
800
x50824
500A
New Year Transportation
dfs and similar
,
graphs
,
implementation
1000
x50133
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49541
1915A
Odd One Out
bitmasks
,
implementation
800
x49260
1433A
Boring Apartments
implementation
,
math
800
x49209
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48635
1873A
Short Sort
brute force
,
implementation
800
x48455
1619A
Square String?
implementation
,
strings
800
x48416
520B
Two Buttons
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
,
shortest paths
1400
x47805
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x47635
1722A
Spell Check
implementation
800
x46664
492A
Vanya and Cubes
implementation
800
x46619
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46371
1535A
Fair Playoff
brute force
,
implementation
800
x46248
707A
Brain's Photos
implementation
800
x46141
1829A
Love Story
implementation
,
strings
800
x45655
514A
Chewbaсca and Number
greedy
,
implementation
1200
x45508
1426A
Floor Number
implementation
,
math
800
x45444
1703B
ICPC Balloons
data structures
,
implementation
800
x45167
474B
Worms
binary search
,
implementation
1200
x44709
379A
New Year Candles
implementation
1000
x44398
489C
Given Length and Sum of Digits...
dp
,
greedy
,
implementation
1400
x44335
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x44215
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44211
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