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Codeforces Round 937 (Div. 4)
05:56:34
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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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Problems
#
Name
4A
Watermelon
brute force
,
math
800
x472896
71A
Way Too Long Words
strings
800
x346894
231A
Team
brute force
,
greedy
800
x293503
282A
Bit++
implementation
800
x230481
158A
Next Round
*special problem
,
implementation
800
x228932
50A
Domino piling
greedy
,
math
800
x225026
263A
Beautiful Matrix
implementation
800
x220524
112A
Petya and Strings
implementation
,
strings
800
x205522
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x194863
281A
Word Capitalization
implementation
,
strings
800
x192717
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x189489
791A
Bear and Big Brother
implementation
800
x175217
266A
Stones on the Table
implementation
800
x175088
617A
Elephant
math
800
x166813
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x164652
59A
Word
implementation
,
strings
800
x158921
977A
Wrong Subtraction
implementation
800
x151972
110A
Nearly Lucky Number
implementation
800
x139970
734A
Anton and Danik
implementation
,
strings
800
x137309
41A
Translation
implementation
,
strings
800
x132419
116A
Tram
implementation
800
x130089
677A
Vanya and Fence
implementation
800
x127950
271A
Beautiful Year
brute force
800
x125378
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x125021
1030A
In Search of an Easy Problem
implementation
800
x117441
467A
George and Accommodation
implementation
800
x112021
344A
Magnets
implementation
800
x109749
486A
Calculating Function
implementation
,
math
800
x107534
136A
Presents
implementation
800
x107361
200B
Drinks
implementation
,
math
800
x106004
61A
Ultra-Fast Mathematician
implementation
800
x102048
228A
Is your horseshoe on the other hoof?
implementation
800
x100160
705A
Hulk
implementation
800
x97768
1328A
Divisibility Problem
math
800
x91655
469A
I Wanna Be the Guy
greedy
,
implementation
800
x89888
520A
Pangram
implementation
,
strings
800
x87841
144A
Arrival of the General
implementation
800
x87488
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x85855
996A
Hit the Lottery
dp
,
greedy
800
x82619
443A
Anton and Letters
constructive algorithms
,
implementation
800
x82568
785A
Anton and Polyhedrons
implementation
,
strings
800
x80567
268A
Games
brute force
800
x79594
1335A
Candies and Two Sisters
math
800
x77349
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x76773
510A
Fox And Snake
implementation
800
x75164
427A
Police Recruits
implementation
800
x71119
1352A
Sum of Round Numbers
implementation
,
math
800
x70163
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x69706
155A
I_love_\%username\%
brute force
800
x69585
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x69216
581A
Vasya the Hipster
implementation
,
math
800
x66158
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x66057
1154A
Restoring Three Numbers
math
800
x65252
151A
Soft Drinking
implementation
,
math
800
x64271
1742A
Sum
implementation
800
x62582
1399A
Remove Smallest
greedy
,
sortings
800
x61729
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x61577
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x60719
630A
Again Twenty Five!
number theory
800
x60536
1512A
Spy Detected!
brute force
,
implementation
800
x58798
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x58727
1692A
Marathon
implementation
800
x58199
32B
Borze
expression parsing
,
implementation
800
x57452
1676A
Lucky?
implementation
800
x56395
758A
Holiday Of Equality
implementation
,
math
800
x56358
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x56174
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x55937
1669A
Division?
implementation
800
x55353
1560A
Dislike of Threes
implementation
800
x54935
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x54609
1367A
Short Substrings
implementation
,
strings
800
x54119
1807A
Plus or Minus
implementation
800
x53816
1791A
Codeforces Checking
implementation
,
strings
800
x53329
1343B
Balanced Array
constructive algorithms
,
math
800
x53069
703A
Mishka and Game
implementation
800
x52861
1760A
Medium Number
implementation
,
sortings
800
x52094
9A
Die Roll
math
,
probabilities
800
x51528
431A
Black Square
implementation
800
x50545
1374A
Required Remainder
math
800
x49964
1367B
Even Array
greedy
,
math
800
x49557
1850A
To My Critics
implementation
,
sortings
800
x49161
1624A
Plus One on the Subset
math
800
x49134
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49026
1433A
Boring Apartments
implementation
,
math
800
x48596
80A
Panoramix's Prediction
brute force
800
x48535
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48076
1551A
Polycarp and Coins
greedy
,
math
800
x47675
1619A
Square String?
implementation
,
strings
800
x47474
1360A
Minimal Square
greedy
,
math
800
x47474
1915A
Odd One Out
bitmasks
,
implementation
800
x47284
1353B
Two Arrays And Swaps
greedy
,
sortings
800
x47067
1873A
Short Sort
brute force
,
implementation
800
x46950
1472B
Fair Division
dp
,
greedy
,
math
800
x46800
492A
Vanya and Cubes
implementation
800
x45860
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x45857
1722A
Spell Check
implementation
800
x45770
1283A
Minutes Before the New Year
math
800
x45705
1535A
Fair Playoff
brute force
,
implementation
800
x45594
1360B
Honest Coach
greedy
,
sortings
800
x45475
707A
Brain's Photos
implementation
800
x45450
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