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Rayan
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Before contest
Codeforces Round 995 (Div. 3)
02:12:10
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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
615A
Bulbs
implementation
800
x17661
609A
USB Flash Drives
greedy
,
implementation
,
sortings
800
x17682
599A
Patrick and Shopping
implementation
800
x29366
595A
Vitaly and Night
constructive algorithms
,
implementation
800
x14640
581A
Vasya the Hipster
implementation
,
math
800
x72738
551A
GukiZ and Contest
brute force
,
implementation
,
sortings
800
x16547
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x189398
540A
Combination Lock
implementation
800
x32956
520A
Pangram
implementation
,
strings
800
x101053
513A
Game
constructive algorithms
,
math
800
x20637
510A
Fox And Snake
implementation
800
x86245
509A
Maximum in Table
brute force
,
implementation
800
x38860
492A
Vanya and Cubes
implementation
800
x51857
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x60526
486A
Calculating Function
implementation
,
math
800
x123067
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x61360
469A
I Wanna Be the Guy
greedy
,
implementation
800
x100599
467A
George and Accommodation
implementation
800
x126346
454A
Little Pony and Crystal Mine
implementation
800
x14953
448A
Rewards
implementation
800
x24585
447A
DZY Loves Hash
implementation
800
x9683
443A
Anton and Letters
constructive algorithms
,
implementation
800
x92099
440A
Forgotten Episode
implementation
800
x7571
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x61237
431A
Black Square
implementation
800
x56172
427A
Police Recruits
implementation
800
x80399
426A
Sereja and Mugs
implementation
800
x9278
421A
Pasha and Hamsters
constructive algorithms
,
implementation
800
x6160
411A
Password Check
*special problem
,
implementation
800
x7323
401A
Vanya and Cards
implementation
,
math
800
x16490
386A
Second-Price Auction
implementation
800
x6511
384A
Coder
implementation
800
x16429
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x68574
378A
Playing with Dice
brute force
800
x24344
363A
Soroban
implementation
800
x10860
361A
Levko and Table
constructive algorithms
,
implementation
800
x16864
344A
Magnets
implementation
800
x124563
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x221490
330A
Cakeminator
brute force
,
implementation
800
x28939
306A
Candies
implementation
800
x7109
302A
Eugeny and Array
implementation
800
x9157
294A
Shaass and Oskols
implementation
,
math
800
x23935
291A
Spyke Talks
*special problem
,
implementation
,
sortings
800
x6134
282A
Bit++
implementation
800
x273178
281A
Word Capitalization
implementation
,
strings
800
x219318
278A
Circle Line
implementation
800
x11923
271A
Beautiful Year
brute force
800
x143431
268A
Games
brute force
800
x88603
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x139095
266A
Stones on the Table
implementation
800
x197314
265A
Colorful Stones (Simplified Edition)
implementation
800
x37387
263A
Beautiful Matrix
implementation
800
x252958
262A
Roma and Lucky Numbers
implementation
800
x20252
255A
Greg's Workout
implementation
800
x29107
248A
Cupboards
implementation
800
x22714
245A
System Administrator
implementation
800
x8522
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x218934
233A
Perfect Permutation
implementation
,
math
800
x43372
231A
Team
brute force
,
greedy
800
x338233
228A
Is your horseshoe on the other hoof?
implementation
800
x113573
214A
System of Equations
brute force
800
x36167
202A
LLPS
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
strings
800
x17181
200B
Drinks
implementation
,
math
800
x120257
181A
Series of Crimes
brute force
,
geometry
,
implementation
800
x7335
177A2
Good Matrix Elements
implementation
800
x7429
177A1
Good Matrix Elements
implementation
800
x8845
172A
Phone Code
*special problem
,
brute force
,
implementation
800
x6202
169A
Chores
sortings
800
x7036
158A
Next Round
*special problem
,
implementation
800
x257643
157A
Game Outcome
brute force
800
x7720
155A
I_love_\%username\%
brute force
800
x77454
151A
Soft Drinking
implementation
,
math
800
x75896
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x95028
146A
Lucky Ticket
implementation
800
x15255
144A
Arrival of the General
implementation
800
x98719
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x85412
136A
Presents
implementation
800
x121246
119A
Epic Game
implementation
800
x27628
116A
Tram
implementation
800
x146757
112A
Petya and Strings
implementation
,
strings
800
x232820
110A
Nearly Lucky Number
implementation
800
x160875
104A
Blackjack
implementation
800
x15555
99A
Help Far Away Kingdom
strings
800
x6764
92A
Chips
implementation
,
math
800
x19170
80A
Panoramix's Prediction
brute force
800
x55187
78A
Haiku
implementation
,
strings
800
x13138
71A
Way Too Long Words
strings
800
x398369
61A
Ultra-Fast Mathematician
implementation
800
x114215
59A
Word
implementation
,
strings
800
x182510
50A
Domino piling
greedy
,
math
800
x255286
49A
Sleuth
implementation
800
x13573
47A
Triangular numbers
brute force
,
math
800
x15340
46A
Ball Game
brute force
,
implementation
800
x8842
41A
Translation
implementation
,
strings
800
x151712
38A
Army
implementation
800
x21765
34A
Reconnaissance 2
implementation
800
x30557
32B
Borze
expression parsing
,
implementation
800
x65696
32A
Reconnaissance
brute force
800
x12802
22A
Second Order Statistics
brute force
800
x22779
16A
Flag
implementation
800
x14672
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