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2025 ICPC Asia Pacific Championship - Online Mirror (Unrated, Online Mirror, ICPC Rules, Teams Preferred)
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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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Custom test
Problems
#
Name
467A
George and Accommodation
implementation
800
x130746
465A
inc ARG
implementation
900
x10131
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x47584
454A
Little Pony and Crystal Mine
implementation
800
x15082
451A
Game With Sticks
implementation
900
x68114
448A
Rewards
implementation
800
x24726
447A
DZY Loves Hash
implementation
800
x9759
443A
Anton and Letters
constructive algorithms
,
implementation
800
x94543
440A
Forgotten Episode
implementation
800
x7713
439A
Devu, the Singer and Churu, the Joker
greedy
,
implementation
900
x25615
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x62585
431A
Black Square
implementation
800
x57741
427A
Police Recruits
implementation
800
x82865
426A
Sereja and Mugs
implementation
800
x9350
424A
Squats
implementation
900
x8628
421A
Pasha and Hamsters
constructive algorithms
,
implementation
800
x6346
415A
Mashmokh and Lights
implementation
900
x9123
412B
Network Configuration
greedy
,
sortings
900
x5686
412A
Poster
greedy
,
implementation
900
x4560
411A
Password Check
*special problem
,
implementation
800
x7413
408A
Line to Cashier
implementation
900
x11460
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x107399
401A
Vanya and Cards
implementation
,
math
800
x16636
387A
George and Sleep
implementation
900
x9871
386A
Second-Price Auction
implementation
800
x6779
384A
Coder
implementation
800
x16568
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x71261
378A
Playing with Dice
brute force
800
x24556
376A
Lever
implementation
,
math
900
x9480
373A
Collecting Beats is Fun
implementation
900
x10840
369A
Valera and Plates
greedy
,
implementation
900
x11269
363A
Soroban
implementation
800
x10942
361A
Levko and Table
constructive algorithms
,
implementation
800
x17057
344A
Magnets
implementation
800
x128866
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x229190
337A
Puzzles
greedy
900
x83098
330A
Cakeminator
brute force
,
implementation
800
x29395
320A
Magic Numbers
brute force
,
greedy
900
x40385
318A
Even Odds
math
900
x120962
313A
Ilya and Bank Account
implementation
,
number theory
900
x58570
306A
Candies
implementation
800
x7289
302A
Eugeny and Array
implementation
800
x9215
299B
Ksusha the Squirrel
brute force
,
implementation
900
x5569
294A
Shaass and Oskols
implementation
,
math
800
x24599
291A
Spyke Talks
*special problem
,
implementation
,
sortings
800
x6191
282A
Bit++
implementation
800
x286208
281A
Word Capitalization
implementation
,
strings
800
x226986
278A
Circle Line
implementation
800
x12011
276A
Lunch Rush
implementation
900
x28258
275A
Lights Out
implementation
900
x31455
271A
Beautiful Year
brute force
800
x148881
268A
Games
brute force
800
x91098
267A
Subtractions
math
,
number theory
900
x7908
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x143265
266A
Stones on the Table
implementation
800
x204092
265A
Colorful Stones (Simplified Edition)
implementation
800
x38407
263B
Squares
greedy
,
implementation
,
sortings
900
x9108
263A
Beautiful Matrix
implementation
800
x262349
262A
Roma and Lucky Numbers
implementation
800
x20400
255A
Greg's Workout
implementation
800
x29388
248A
Cupboards
implementation
800
x23127
246A
Buggy Sorting
constructive algorithms
,
greedy
,
sortings
900
x9447
245A
System Administrator
implementation
800
x8602
244A
Dividing Orange
implementation
900
x8048
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x227442
233A
Perfect Permutation
implementation
,
math
800
x44284
231A
Team
brute force
,
greedy
800
x350890
228A
Is your horseshoe on the other hoof?
implementation
800
x117225
215A
Bicycle Chain
brute force
,
implementation
900
x14939
214A
System of Equations
brute force
800
x37045
208A
Dubstep
strings
900
x92599
205A
Little Elephant and Rozdil
brute force
,
implementation
900
x23115
202A
LLPS
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
strings
800
x17457
200B
Drinks
implementation
,
math
800
x124317
199A
Hexadecimal's theorem
brute force
,
constructive algorithms
,
implementation
,
number theory
900
x27453
194A
Exams
implementation
,
math
900
x10106
181A
Series of Crimes
brute force
,
geometry
,
implementation
800
x7509
177A2
Good Matrix Elements
implementation
800
x7768
177A1
Good Matrix Elements
implementation
800
x9687
172A
Phone Code
*special problem
,
brute force
,
implementation
800
x6460
169A
Chores
sortings
800
x7154
168A
Wizards and Demonstration
implementation
,
math
900
x10779
160A
Twins
greedy
,
sortings
900
x123552
158A
Next Round
*special problem
,
implementation
800
x266266
157A
Game Outcome
brute force
800
x7799
155A
I_love_\%username\%
brute force
800
x79438
152A
Marks
implementation
900
x17200
151A
Soft Drinking
implementation
,
math
800
x78702
149A
Business trip
greedy
,
implementation
,
sortings
900
x41327
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x97385
146A
Lucky Ticket
implementation
800
x15482
144A
Arrival of the General
implementation
800
x101581
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x87707
137A
Postcards and photos
implementation
900
x7338
136A
Presents
implementation
800
x125166
133A
HQ9+
implementation
900
x110301
130A
Hexagonal numbers
*special problem
,
implementation
900
x1693
129A
Cookies
implementation
900
x23353
127A
Wasted Time
geometry
900
x11502
119A
Epic Game
implementation
800
x27823
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