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Codeforces Round 946 (Div. 3)
3 days
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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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Custom test
Problems
#
Name
4A
Watermelon
brute force
,
math
800
x483777
71A
Way Too Long Words
strings
800
x355225
231A
Team
brute force
,
greedy
800
x300682
282A
Bit++
implementation
800
x237547
158A
Next Round
*special problem
,
implementation
800
x233347
50A
Domino piling
greedy
,
math
800
x229672
263A
Beautiful Matrix
implementation
800
x225734
112A
Petya and Strings
implementation
,
strings
800
x210048
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x199101
281A
Word Capitalization
implementation
,
strings
800
x196945
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x194228
791A
Bear and Big Brother
implementation
800
x179807
266A
Stones on the Table
implementation
800
x178754
617A
Elephant
math
800
x170942
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x168510
59A
Word
implementation
,
strings
800
x162900
977A
Wrong Subtraction
implementation
800
x155632
110A
Nearly Lucky Number
implementation
800
x143176
734A
Anton and Danik
implementation
,
strings
800
x140877
41A
Translation
implementation
,
strings
800
x135555
116A
Tram
implementation
800
x132601
677A
Vanya and Fence
implementation
800
x131274
271A
Beautiful Year
brute force
800
x128183
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x127252
1030A
In Search of an Easy Problem
implementation
800
x120528
467A
George and Accommodation
implementation
800
x114252
344A
Magnets
implementation
800
x112296
486A
Calculating Function
implementation
,
math
800
x109847
136A
Presents
implementation
800
x109577
200B
Drinks
implementation
,
math
800
x108250
61A
Ultra-Fast Mathematician
implementation
800
x104008
228A
Is your horseshoe on the other hoof?
implementation
800
x102418
705A
Hulk
implementation
800
x99784
1328A
Divisibility Problem
math
800
x93793
469A
I Wanna Be the Guy
greedy
,
implementation
800
x91693
520A
Pangram
implementation
,
strings
800
x90197
144A
Arrival of the General
implementation
800
x89334
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x87410
996A
Hit the Lottery
dp
,
greedy
800
x84614
443A
Anton and Letters
constructive algorithms
,
implementation
800
x84277
785A
Anton and Polyhedrons
implementation
,
strings
800
x82586
268A
Games
brute force
800
x81238
1335A
Candies and Two Sisters
math
800
x78974
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x78149
510A
Fox And Snake
implementation
800
x77399
427A
Police Recruits
implementation
800
x72767
1352A
Sum of Round Numbers
implementation
,
math
800
x72401
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x71152
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x71115
155A
I_love_\%username\%
brute force
800
x70810
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67582
581A
Vasya the Hipster
implementation
,
math
800
x67352
1154A
Restoring Three Numbers
math
800
x66598
151A
Soft Drinking
implementation
,
math
800
x66102
1742A
Sum
implementation
800
x65099
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x63134
1399A
Remove Smallest
greedy
,
sortings
800
x62946
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x62683
630A
Again Twenty Five!
number theory
800
x62257
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60655
1692A
Marathon
implementation
800
x60223
1512A
Spy Detected!
brute force
,
implementation
800
x60152
32B
Borze
expression parsing
,
implementation
800
x59033
1676A
Lucky?
implementation
800
x58324
758A
Holiday Of Equality
implementation
,
math
800
x57524
1669A
Division?
implementation
800
x57460
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x57139
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56793
1807A
Plus or Minus
implementation
800
x56136
1560A
Dislike of Threes
implementation
800
x56080
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55718
1791A
Codeforces Checking
implementation
,
strings
800
x55312
1367A
Short Substrings
implementation
,
strings
800
x54971
1760A
Medium Number
implementation
,
sortings
800
x54102
1343B
Balanced Array
constructive algorithms
,
math
800
x53810
703A
Mishka and Game
implementation
800
x53712
9A
Die Roll
math
,
probabilities
800
x52758
431A
Black Square
implementation
800
x51675
1850A
To My Critics
implementation
,
sortings
800
x51367
1374A
Required Remainder
math
800
x50756
1367B
Even Array
greedy
,
math
800
x50439
1915A
Odd One Out
bitmasks
,
implementation
800
x50080
1624A
Plus One on the Subset
math
800
x49886
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49798
80A
Panoramix's Prediction
brute force
800
x49783
1433A
Boring Apartments
implementation
,
math
800
x49446
1873A
Short Sort
brute force
,
implementation
800
x49065
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48997
1619A
Square String?
implementation
,
strings
800
x48645
1551A
Polycarp and Coins
greedy
,
math
800
x48563
1360A
Minimal Square
greedy
,
math
800
x48142
1353B
Two Arrays And Swaps
greedy
,
sortings
800
x47646
1472B
Fair Division
dp
,
greedy
,
math
800
x47630
1722A
Spell Check
implementation
800
x47148
492A
Vanya and Cubes
implementation
800
x46922
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46718
1283A
Minutes Before the New Year
math
800
x46708
1535A
Fair Playoff
brute force
,
implementation
800
x46549
707A
Brain's Photos
implementation
800
x46445
1360B
Honest Coach
greedy
,
sortings
800
x46191
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