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Codeforces Round 945 (Div. 2)
43:49:19
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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
4A
Watermelon
brute force
,
math
800
x483349
71A
Way Too Long Words
strings
800
x354938
231A
Team
brute force
,
greedy
800
x300422
1A
Theatre Square
math
1000
x246409
282A
Bit++
implementation
800
x237290
158A
Next Round
*special problem
,
implementation
800
x233164
50A
Domino piling
greedy
,
math
800
x229500
263A
Beautiful Matrix
implementation
800
x225533
112A
Petya and Strings
implementation
,
strings
800
x209863
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x198924
281A
Word Capitalization
implementation
,
strings
800
x196776
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x194035
118A
String Task
implementation
,
strings
1000
x181740
791A
Bear and Big Brother
implementation
800
x179589
266A
Stones on the Table
implementation
800
x178616
617A
Elephant
math
800
x170763
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x168275
59A
Word
implementation
,
strings
800
x162700
69A
Young Physicist
implementation
,
math
1000
x155496
977A
Wrong Subtraction
implementation
800
x155488
96A
Football
implementation
,
strings
900
x149548
110A
Nearly Lucky Number
implementation
800
x143053
734A
Anton and Danik
implementation
,
strings
800
x140763
41A
Translation
implementation
,
strings
800
x135428
116A
Tram
implementation
800
x132515
677A
Vanya and Fence
implementation
800
x131187
271A
Beautiful Year
brute force
800
x128055
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x127168
58A
Chat room
greedy
,
strings
1000
x122508
1030A
In Search of an Easy Problem
implementation
800
x120413
122A
Lucky Division
brute force
,
number theory
1000
x116422
467A
George and Accommodation
implementation
800
x114154
344A
Magnets
implementation
800
x112198
160A
Twins
greedy
,
sortings
900
x111160
486A
Calculating Function
implementation
,
math
800
x109755
136A
Presents
implementation
800
x109471
200B
Drinks
implementation
,
math
800
x108164
318A
Even Odds
math
900
x106519
61A
Ultra-Fast Mathematician
implementation
800
x103925
228A
Is your horseshoe on the other hoof?
implementation
800
x102332
133A
HQ9+
implementation
900
x100242
705A
Hulk
implementation
800
x99701
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x94732
1328A
Divisibility Problem
math
800
x93700
469A
I Wanna Be the Guy
greedy
,
implementation
800
x91632
520A
Pangram
implementation
,
strings
800
x90127
144A
Arrival of the General
implementation
800
x89262
479A
Expression
brute force
,
math
1000
x88950
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x87350
996A
Hit the Lottery
dp
,
greedy
800
x84536
443A
Anton and Letters
constructive algorithms
,
implementation
800
x84206
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x84133
208A
Dubstep
strings
900
x83821
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x82597
785A
Anton and Polyhedrons
implementation
,
strings
800
x82501
131A
cAPS lOCK
implementation
,
strings
1000
x81398
25A
IQ test
brute force
1300
x81379
268A
Games
brute force
800
x81187
1335A
Candies and Two Sisters
math
800
x78872
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x78097
4C
Registration System
data structures
,
hashing
,
implementation
1300
x77421
510A
Fox And Snake
implementation
800
x77330
337A
Puzzles
greedy
900
x75731
230A
Dragons
greedy
,
sortings
1000
x74516
427A
Police Recruits
implementation
800
x72712
1352A
Sum of Round Numbers
implementation
,
math
800
x72313
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x71323
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x71093
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x71037
155A
I_love_\%username\%
brute force
800
x70754
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x70140
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67527
581A
Vasya the Hipster
implementation
,
math
800
x67311
1154A
Restoring Three Numbers
math
800
x66553
339B
Xenia and Ringroad
implementation
1000
x66518
151A
Soft Drinking
implementation
,
math
800
x66028
1742A
Sum
implementation
800
x64995
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x63023
1399A
Remove Smallest
greedy
,
sortings
800
x62898
189A
Cut Ribbon
brute force
,
dp
1300
x62868
451A
Game With Sticks
implementation
900
x62813
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x62647
630A
Again Twenty Five!
number theory
800
x62189
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60612
1692A
Marathon
implementation
800
x60170
1512A
Spy Detected!
brute force
,
implementation
800
x60106
466A
Cheap Travel
implementation
1200
x59703
32B
Borze
expression parsing
,
implementation
800
x58984
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x58563
1676A
Lucky?
implementation
800
x58262
758A
Holiday Of Equality
implementation
,
math
800
x57474
1669A
Division?
implementation
800
x57404
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x57113
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56767
579A
Raising Bacteria
bitmasks
1000
x56471
1807A
Plus or Minus
implementation
800
x56044
1560A
Dislike of Threes
implementation
800
x56037
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55678
1475A
Odd Divisor
math
,
number theory
900
x55435
1791A
Codeforces Checking
implementation
,
strings
800
x55242
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