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Helvetic Coding Contest 2024 online mirror (teams allowed, unrated)
03:56:15
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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
4A
Watermelon
brute force
,
math
800
x480840
71A
Way Too Long Words
strings
800
x353154
231A
Team
brute force
,
greedy
800
x298845
1A
Theatre Square
math
1000
x245517
282A
Bit++
implementation
800
x235845
158A
Next Round
*special problem
,
implementation
800
x232192
50A
Domino piling
greedy
,
math
800
x228459
263A
Beautiful Matrix
implementation
800
x224376
112A
Petya and Strings
implementation
,
strings
800
x208929
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x197992
281A
Word Capitalization
implementation
,
strings
800
x195846
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x192975
118A
String Task
implementation
,
strings
1000
x181044
791A
Bear and Big Brother
implementation
800
x178597
266A
Stones on the Table
implementation
800
x177820
617A
Elephant
math
800
x169909
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x167422
59A
Word
implementation
,
strings
800
x161801
69A
Young Physicist
implementation
,
math
1000
x154847
977A
Wrong Subtraction
implementation
800
x154713
96A
Football
implementation
,
strings
900
x148900
110A
Nearly Lucky Number
implementation
800
x142344
734A
Anton and Danik
implementation
,
strings
800
x140007
41A
Translation
implementation
,
strings
800
x134748
116A
Tram
implementation
800
x131928
677A
Vanya and Fence
implementation
800
x130475
271A
Beautiful Year
brute force
800
x127387
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x126624
58A
Chat room
greedy
,
strings
1000
x122062
1030A
In Search of an Easy Problem
implementation
800
x119784
122A
Lucky Division
brute force
,
number theory
1000
x115856
467A
George and Accommodation
implementation
800
x113598
344A
Magnets
implementation
800
x111626
160A
Twins
greedy
,
sortings
900
x110715
486A
Calculating Function
implementation
,
math
800
x109220
136A
Presents
implementation
800
x108971
200B
Drinks
implementation
,
math
800
x107606
318A
Even Odds
math
900
x106017
61A
Ultra-Fast Mathematician
implementation
800
x103473
228A
Is your horseshoe on the other hoof?
implementation
800
x101804
133A
HQ9+
implementation
900
x99873
705A
Hulk
implementation
800
x99288
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x94314
1328A
Divisibility Problem
math
800
x93151
469A
I Wanna Be the Guy
greedy
,
implementation
800
x91229
520A
Pangram
implementation
,
strings
800
x89671
144A
Arrival of the General
implementation
800
x88841
479A
Expression
brute force
,
math
1000
x88499
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x87010
996A
Hit the Lottery
dp
,
greedy
800
x84082
443A
Anton and Letters
constructive algorithms
,
implementation
800
x83841
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x83827
208A
Dubstep
strings
900
x83453
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x82359
785A
Anton and Polyhedrons
implementation
,
strings
800
x82078
131A
cAPS lOCK
implementation
,
strings
1000
x81130
25A
IQ test
brute force
1300
x80991
268A
Games
brute force
800
x80824
1335A
Candies and Two Sisters
math
800
x78517
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77784
4C
Registration System
data structures
,
hashing
,
implementation
1300
x77062
510A
Fox And Snake
implementation
800
x76882
337A
Puzzles
greedy
900
x75472
230A
Dragons
greedy
,
sortings
1000
x74246
427A
Police Recruits
implementation
800
x72386
1352A
Sum of Round Numbers
implementation
,
math
800
x71767
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x71040
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x70741
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70624
155A
I_love_\%username\%
brute force
800
x70503
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x69757
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67180
581A
Vasya the Hipster
implementation
,
math
800
x67056
339B
Xenia and Ringroad
implementation
1000
x66327
1154A
Restoring Three Numbers
math
800
x66276
151A
Soft Drinking
implementation
,
math
800
x65648
1742A
Sum
implementation
800
x64451
1399A
Remove Smallest
greedy
,
sortings
800
x62650
451A
Game With Sticks
implementation
900
x62552
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x62414
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x62409
189A
Cut Ribbon
brute force
,
dp
1300
x62398
630A
Again Twenty Five!
number theory
800
x61860
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60216
1512A
Spy Detected!
brute force
,
implementation
800
x59827
1692A
Marathon
implementation
800
x59710
466A
Cheap Travel
implementation
1200
x59461
32B
Borze
expression parsing
,
implementation
800
x58601
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x58271
1676A
Lucky?
implementation
800
x57866
758A
Holiday Of Equality
implementation
,
math
800
x57217
1669A
Division?
implementation
800
x56966
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x56947
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56589
579A
Raising Bacteria
bitmasks
1000
x56093
1560A
Dislike of Threes
implementation
800
x55788
1807A
Plus or Minus
implementation
800
x55544
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55439
1475A
Odd Divisor
math
,
number theory
900
x55038
1367A
Short Substrings
implementation
,
strings
800
x54790
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