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2023 Post World Finals Online ICPC Challenge powered by Huawei
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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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Custom test
Problems
#
Name
4A
Watermelon
brute force
,
math
800
x480956
71A
Way Too Long Words
strings
800
x353251
231A
Team
brute force
,
greedy
800
x298926
1A
Theatre Square
math
1000
x245596
282A
Bit++
implementation
800
x235925
158A
Next Round
*special problem
,
implementation
800
x232240
50A
Domino piling
greedy
,
math
800
x228507
263A
Beautiful Matrix
implementation
800
x224418
112A
Petya and Strings
implementation
,
strings
800
x208988
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x198060
281A
Word Capitalization
implementation
,
strings
800
x195903
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x193030
118A
String Task
implementation
,
strings
1000
x181095
791A
Bear and Big Brother
implementation
800
x178655
266A
Stones on the Table
implementation
800
x177877
617A
Elephant
math
800
x169972
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x167473
59A
Word
implementation
,
strings
800
x161859
69A
Young Physicist
implementation
,
math
1000
x154893
977A
Wrong Subtraction
implementation
800
x154749
96A
Football
implementation
,
strings
900
x148946
110A
Nearly Lucky Number
implementation
800
x142381
734A
Anton and Danik
implementation
,
strings
800
x140047
41A
Translation
implementation
,
strings
800
x134783
116A
Tram
implementation
800
x131968
677A
Vanya and Fence
implementation
800
x130514
271A
Beautiful Year
brute force
800
x127416
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x126657
58A
Chat room
greedy
,
strings
1000
x122094
1030A
In Search of an Easy Problem
implementation
800
x119813
122A
Lucky Division
brute force
,
number theory
1000
x115881
467A
George and Accommodation
implementation
800
x113624
344A
Magnets
implementation
800
x111654
160A
Twins
greedy
,
sortings
900
x110737
486A
Calculating Function
implementation
,
math
800
x109251
136A
Presents
implementation
800
x109003
200B
Drinks
implementation
,
math
800
x107637
318A
Even Odds
math
900
x106051
61A
Ultra-Fast Mathematician
implementation
800
x103499
228A
Is your horseshoe on the other hoof?
implementation
800
x101838
133A
HQ9+
implementation
900
x99894
705A
Hulk
implementation
800
x99310
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x94343
1328A
Divisibility Problem
math
800
x93192
469A
I Wanna Be the Guy
greedy
,
implementation
800
x91259
520A
Pangram
implementation
,
strings
800
x89687
144A
Arrival of the General
implementation
800
x88864
479A
Expression
brute force
,
math
1000
x88513
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x87025
996A
Hit the Lottery
dp
,
greedy
800
x84105
443A
Anton and Letters
constructive algorithms
,
implementation
800
x83862
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x83843
208A
Dubstep
strings
900
x83465
785A
Anton and Polyhedrons
implementation
,
strings
800
x82103
131A
cAPS lOCK
implementation
,
strings
1000
x81142
268A
Games
brute force
800
x80843
1335A
Candies and Two Sisters
math
800
x78532
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77799
510A
Fox And Snake
implementation
800
x76907
337A
Puzzles
greedy
900
x75489
230A
Dragons
greedy
,
sortings
1000
x74261
427A
Police Recruits
implementation
800
x72404
1352A
Sum of Round Numbers
implementation
,
math
800
x71800
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x70757
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70645
155A
I_love_\%username\%
brute force
800
x70519
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67196
581A
Vasya the Hipster
implementation
,
math
800
x67066
339B
Xenia and Ringroad
implementation
1000
x66334
1154A
Restoring Three Numbers
math
800
x66290
151A
Soft Drinking
implementation
,
math
800
x65664
1742A
Sum
implementation
800
x64461
1399A
Remove Smallest
greedy
,
sortings
800
x62666
451A
Game With Sticks
implementation
900
x62562
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x62437
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x62427
630A
Again Twenty Five!
number theory
800
x61879
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60237
1512A
Spy Detected!
brute force
,
implementation
800
x59843
1692A
Marathon
implementation
800
x59741
32B
Borze
expression parsing
,
implementation
800
x58624
1676A
Lucky?
implementation
800
x57880
758A
Holiday Of Equality
implementation
,
math
800
x57228
1669A
Division?
implementation
800
x56987
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x56951
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56595
579A
Raising Bacteria
bitmasks
1000
x56115
1560A
Dislike of Threes
implementation
800
x55804
1807A
Plus or Minus
implementation
800
x55563
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55450
1475A
Odd Divisor
math
,
number theory
900
x55063
1367A
Short Substrings
implementation
,
strings
800
x54801
1791A
Codeforces Checking
implementation
,
strings
800
x54781
1760A
Medium Number
implementation
,
sortings
800
x53633
1343B
Balanced Array
constructive algorithms
,
math
800
x53616
313A
Ilya and Bank Account
implementation
,
number theory
900
x53538
703A
Mishka and Game
implementation
800
x53508
9A
Die Roll
math
,
probabilities
800
x52458
43A
Football
strings
1000
x52013
431A
Black Square
implementation
800
x51401
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