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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
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Status
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Custom test
Problems
#
Name
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x217939
337A
Puzzles
greedy
900
x80782
336A
Vasily the Bear and Triangle
implementation
,
math
1000
x10131
334A
Candy Bags
implementation
1000
x18709
330A
Cakeminator
brute force
,
implementation
800
x28824
322A
Ciel and Dancing
greedy
1000
x8239
320A
Magic Numbers
brute force
,
greedy
900
x39025
318A
Even Odds
math
900
x115927
313A
Ilya and Bank Account
implementation
,
number theory
900
x56878
306A
Candies
implementation
800
x7066
302A
Eugeny and Array
implementation
800
x9107
299B
Ksusha the Squirrel
brute force
,
implementation
900
x5357
299A
Ksusha and Array
brute force
,
number theory
,
sortings
1000
x8135
294A
Shaass and Oskols
implementation
,
math
800
x23810
291A
Spyke Talks
*special problem
,
implementation
,
sortings
800
x6105
284B
Cows and Poker Game
brute force
,
implementation
1000
x6865
282A
Bit++
implementation
800
x268209
281A
Word Capitalization
implementation
,
strings
800
x215609
278A
Circle Line
implementation
800
x11747
276A
Lunch Rush
implementation
900
x27815
275A
Lights Out
implementation
900
x30476
272A
Dima and Friends
implementation
,
math
1000
x24784
271A
Beautiful Year
brute force
800
x140742
268B
Buttons
implementation
,
math
1000
x32666
268A
Games
brute force
800
x87602
267A
Subtractions
math
,
number theory
900
x7580
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x137103
266A
Stones on the Table
implementation
800
x194332
265B
Roadside Trees (Simplified Edition)
greedy
,
implementation
1000
x17264
265A
Colorful Stones (Simplified Edition)
implementation
800
x37103
263B
Squares
greedy
,
implementation
,
sortings
900
x9007
263A
Beautiful Matrix
implementation
800
x248987
262A
Roma and Lucky Numbers
implementation
800
x20063
259A
Little Elephant and Chess
brute force
,
strings
1000
x9190
255A
Greg's Workout
implementation
800
x28977
250A
Paper Work
greedy
1000
x4144
248A
Cupboards
implementation
800
x22557
246A
Buggy Sorting
constructive algorithms
,
greedy
,
sortings
900
x9309
245A
System Administrator
implementation
800
x8497
244A
Dividing Orange
implementation
900
x7964
237A
Free Cash
implementation
1000
x26966
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x215141
234B
Reading
sortings
1000
x7135
233A
Perfect Permutation
implementation
,
math
800
x42993
231A
Team
brute force
,
greedy
800
x332813
230A
Dragons
greedy
,
sortings
1000
x80295
228A
Is your horseshoe on the other hoof?
implementation
800
x112001
221A
Little Elephant and Function
implementation
,
math
1000
x15308
219A
k-String
implementation
,
strings
1000
x28082
215A
Bicycle Chain
brute force
,
implementation
900
x14600
214A
System of Equations
brute force
800
x35832
208A
Dubstep
strings
900
x89351
205A
Little Elephant and Rozdil
brute force
,
implementation
900
x22546
202A
LLPS
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
strings
800
x17010
200B
Drinks
implementation
,
math
800
x118358
199A
Hexadecimal's theorem
brute force
,
constructive algorithms
,
implementation
,
number theory
900
x26757
195A
Let's Watch Football
binary search
,
brute force
,
math
1000
x9089
194A
Exams
implementation
,
math
900
x9915
182B
Vasya's Calendar
implementation
1000
x6949
181A
Series of Crimes
brute force
,
geometry
,
implementation
800
x7219
178A2
Educational Game
greedy
1000
x1640
178A1
Educational Game
1000
x1619
177B1
Rectangular Game
number theory
1000
x4192
177A2
Good Matrix Elements
implementation
800
x7375
177A1
Good Matrix Elements
implementation
800
x8786
172A
Phone Code
*special problem
,
brute force
,
implementation
800
x6168
169A
Chores
sortings
800
x6987
168A
Wizards and Demonstration
implementation
,
math
900
x10638
165A
Supercentral Point
implementation
1000
x23694
160A
Twins
greedy
,
sortings
900
x119423
158A
Next Round
*special problem
,
implementation
800
x253831
157B
Trace
geometry
,
sortings
1000
x13253
157A
Game Outcome
brute force
800
x7682
155A
I_love_\%username\%
brute force
800
x76623
152A
Marks
implementation
900
x16880
151A
Soft Drinking
implementation
,
math
800
x74716
149A
Business trip
greedy
,
implementation
,
sortings
900
x40138
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x93949
146A
Lucky Ticket
implementation
800
x15177
144A
Arrival of the General
implementation
800
x97465
143A
Help Vasilisa the Wise 2
brute force
,
math
1000
x13949
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x84328
139A
Petr and Book
implementation
1000
x31568
137B
Permutation
greedy
1000
x13760
137A
Postcards and photos
implementation
900
x7218
136A
Presents
implementation
800
x119550
133A
HQ9+
implementation
900
x106664
131A
cAPS lOCK
implementation
,
strings
1000
x86548
130A
Hexagonal numbers
*special problem
,
implementation
900
x1635
129A
Cookies
implementation
900
x22875
127B
Canvas Frames
implementation
1000
x8899
127A
Wasted Time
geometry
900
x11301
125B
Simple XML
implementation
1000
x2950
124A
The number of positions
math
1000
x38776
122B
Lucky Substring
brute force
,
implementation
1000
x12392
122A
Lucky Division
brute force
,
number theory
1000
x125342
120A
Elevator
brute force
,
implementation
,
math
1000
x4840
119A
Epic Game
implementation
800
x27532
118B
Present from Lena
constructive algorithms
,
implementation
1000
x30259
118A
String Task
implementation
,
strings
1000
x195381
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