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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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Problems
#
Name
4A
Watermelon
brute force
,
math
800
x483781
71A
Way Too Long Words
strings
800
x355228
231A
Team
brute force
,
greedy
800
x300685
1A
Theatre Square
math
1000
x246565
282A
Bit++
implementation
800
x237547
158A
Next Round
*special problem
,
implementation
800
x233348
50A
Domino piling
greedy
,
math
800
x229672
263A
Beautiful Matrix
implementation
800
x225739
112A
Petya and Strings
implementation
,
strings
800
x210050
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x199102
281A
Word Capitalization
implementation
,
strings
800
x196948
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x194229
118A
String Task
implementation
,
strings
1000
x181845
791A
Bear and Big Brother
implementation
800
x179809
266A
Stones on the Table
implementation
800
x178757
617A
Elephant
math
800
x170942
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x168511
59A
Word
implementation
,
strings
800
x162900
977A
Wrong Subtraction
implementation
800
x155633
69A
Young Physicist
implementation
,
math
1000
x155601
96A
Football
implementation
,
strings
900
x149646
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
x132603
677A
Vanya and Fence
implementation
800
x131274
271A
Beautiful Year
brute force
800
x128185
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x127254
58A
Chat room
greedy
,
strings
1000
x122624
1030A
In Search of an Easy Problem
implementation
800
x120531
122A
Lucky Division
brute force
,
number theory
1000
x116515
467A
George and Accommodation
implementation
800
x114253
344A
Magnets
implementation
800
x112297
160A
Twins
greedy
,
sortings
900
x111223
486A
Calculating Function
implementation
,
math
800
x109847
136A
Presents
implementation
800
x109577
200B
Drinks
implementation
,
math
800
x108251
318A
Even Odds
math
900
x106614
61A
Ultra-Fast Mathematician
implementation
800
x104009
228A
Is your horseshoe on the other hoof?
implementation
800
x102419
133A
HQ9+
implementation
900
x100299
705A
Hulk
implementation
800
x99784
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x94797
1328A
Divisibility Problem
math
800
x93793
469A
I Wanna Be the Guy
greedy
,
implementation
800
x91694
520A
Pangram
implementation
,
strings
800
x90198
144A
Arrival of the General
implementation
800
x89335
479A
Expression
brute force
,
math
1000
x89008
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x87411
996A
Hit the Lottery
dp
,
greedy
800
x84614
443A
Anton and Letters
constructive algorithms
,
implementation
800
x84279
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x84185
208A
Dubstep
strings
900
x83879
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x82643
785A
Anton and Polyhedrons
implementation
,
strings
800
x82586
131A
cAPS lOCK
implementation
,
strings
1000
x81465
25A
IQ test
brute force
1300
x81436
268A
Games
brute force
800
x81238
1335A
Candies and Two Sisters
math
800
x78974
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x78149
4C
Registration System
data structures
,
hashing
,
implementation
1300
x77480
510A
Fox And Snake
implementation
800
x77400
337A
Puzzles
greedy
900
x75775
230A
Dragons
greedy
,
sortings
1000
x74568
427A
Police Recruits
implementation
800
x72767
1352A
Sum of Round Numbers
implementation
,
math
800
x72401
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x71389
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x71153
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x71116
155A
I_love_\%username\%
brute force
800
x70810
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x70218
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67583
581A
Vasya the Hipster
implementation
,
math
800
x67352
1154A
Restoring Three Numbers
math
800
x66598
339B
Xenia and Ringroad
implementation
1000
x66575
151A
Soft Drinking
implementation
,
math
800
x66104
1742A
Sum
implementation
800
x65101
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x63134
1399A
Remove Smallest
greedy
,
sortings
800
x62946
189A
Cut Ribbon
brute force
,
dp
1300
x62907
451A
Game With Sticks
implementation
900
x62853
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
x60224
1512A
Spy Detected!
brute force
,
implementation
800
x60152
466A
Cheap Travel
implementation
1200
x59749
32B
Borze
expression parsing
,
implementation
800
x59034
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x58616
1676A
Lucky?
implementation
800
x58324
758A
Holiday Of Equality
implementation
,
math
800
x57525
1669A
Division?
implementation
800
x57462
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x57141
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56793
579A
Raising Bacteria
bitmasks
1000
x56519
1807A
Plus or Minus
implementation
800
x56137
1560A
Dislike of Threes
implementation
800
x56080
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55718
1475A
Odd Divisor
math
,
number theory
900
x55495
1791A
Codeforces Checking
implementation
,
strings
800
x55312
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