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Codeforces Round (Div. 1 + Div. 2)
34:51:27
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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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Custom test
Problems
#
Name
4A
Watermelon
brute force
,
math
800
x484987
71A
Way Too Long Words
strings
800
x356335
231A
Team
brute force
,
greedy
800
x301526
1A
Theatre Square
math
1000
x247056
282A
Bit++
implementation
800
x238356
158A
Next Round
*special problem
,
implementation
800
x233953
50A
Domino piling
greedy
,
math
800
x230215
263A
Beautiful Matrix
implementation
800
x226521
112A
Petya and Strings
implementation
,
strings
800
x210581
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x199671
281A
Word Capitalization
implementation
,
strings
800
x197497
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x194795
118A
String Task
implementation
,
strings
1000
x182246
791A
Bear and Big Brother
implementation
800
x180400
266A
Stones on the Table
implementation
800
x179190
617A
Elephant
math
800
x171452
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x168992
59A
Word
implementation
,
strings
800
x163368
977A
Wrong Subtraction
implementation
800
x156105
69A
Young Physicist
implementation
,
math
1000
x155969
96A
Football
implementation
,
strings
900
x149984
110A
Nearly Lucky Number
implementation
800
x143621
734A
Anton and Danik
implementation
,
strings
800
x141265
41A
Translation
implementation
,
strings
800
x135931
116A
Tram
implementation
800
x132933
677A
Vanya and Fence
implementation
800
x131614
271A
Beautiful Year
brute force
800
x128554
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x127530
58A
Chat room
greedy
,
strings
1000
x122877
1030A
In Search of an Easy Problem
implementation
800
x120879
122A
Lucky Division
brute force
,
number theory
1000
x116794
467A
George and Accommodation
implementation
800
x114522
344A
Magnets
implementation
800
x112568
160A
Twins
greedy
,
sortings
900
x111453
486A
Calculating Function
implementation
,
math
800
x110125
136A
Presents
implementation
800
x109862
200B
Drinks
implementation
,
math
800
x108546
318A
Even Odds
math
900
x106899
61A
Ultra-Fast Mathematician
implementation
800
x104260
228A
Is your horseshoe on the other hoof?
implementation
800
x102672
133A
HQ9+
implementation
900
x100493
705A
Hulk
implementation
800
x99988
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x95008
1328A
Divisibility Problem
math
800
x94070
469A
I Wanna Be the Guy
greedy
,
implementation
800
x91882
520A
Pangram
implementation
,
strings
800
x90429
144A
Arrival of the General
implementation
800
x89569
479A
Expression
brute force
,
math
1000
x89288
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x87610
996A
Hit the Lottery
dp
,
greedy
800
x84863
443A
Anton and Letters
constructive algorithms
,
implementation
800
x84449
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x84375
208A
Dubstep
strings
900
x84059
785A
Anton and Polyhedrons
implementation
,
strings
800
x82812
131A
cAPS lOCK
implementation
,
strings
1000
x81612
268A
Games
brute force
800
x81419
1335A
Candies and Two Sisters
math
800
x79196
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x78310
510A
Fox And Snake
implementation
800
x77627
337A
Puzzles
greedy
900
x75908
230A
Dragons
greedy
,
sortings
1000
x74749
427A
Police Recruits
implementation
800
x72937
1352A
Sum of Round Numbers
implementation
,
math
800
x72653
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x71406
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x71343
155A
I_love_\%username\%
brute force
800
x70994
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67773
581A
Vasya the Hipster
implementation
,
math
800
x67495
1154A
Restoring Three Numbers
math
800
x66756
339B
Xenia and Ringroad
implementation
1000
x66703
151A
Soft Drinking
implementation
,
math
800
x66386
1742A
Sum
implementation
800
x65364
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x63426
1399A
Remove Smallest
greedy
,
sortings
800
x63083
451A
Game With Sticks
implementation
900
x62966
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x62830
630A
Again Twenty Five!
number theory
800
x62454
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60825
1692A
Marathon
implementation
800
x60429
1512A
Spy Detected!
brute force
,
implementation
800
x60290
32B
Borze
expression parsing
,
implementation
800
x59227
1676A
Lucky?
implementation
800
x58545
1669A
Division?
implementation
800
x57687
758A
Holiday Of Equality
implementation
,
math
800
x57643
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x57251
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56906
579A
Raising Bacteria
bitmasks
1000
x56707
1807A
Plus or Minus
implementation
800
x56409
1560A
Dislike of Threes
implementation
800
x56229
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55858
1475A
Odd Divisor
math
,
number theory
900
x55746
1791A
Codeforces Checking
implementation
,
strings
800
x55538
1367A
Short Substrings
implementation
,
strings
800
x55048
1760A
Medium Number
implementation
,
sortings
800
x54330
1343B
Balanced Array
constructive algorithms
,
math
800
x53940
313A
Ilya and Bank Account
implementation
,
number theory
900
x53833
703A
Mishka and Game
implementation
800
x53823
9A
Die Roll
math
,
probabilities
800
x52937
43A
Football
strings
1000
x52487
431A
Black Square
implementation
800
x51797
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