Qualification Round: Bathroom Stalls

13983 correct small sets, 10822 correct large-1 sets, and 5954 correct large-2 sets. View problem statement or contest analysis.

Compact solutions

Solved in...

C++ (16693 sets)
Python (6010 sets)
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C# (916 sets)
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Ruby (277 sets)
Haskell (214 sets)
JavaScript (211 sets)
Go (174 sets)
Scala (142 sets)
PHP (109 sets)
Rust (76 sets)
Kotlin (73 sets)
MATLAB (72 sets)
Perl (49 sets)
Swift (45 sets)
OCaml (41 sets)
Clojure (35 sets)
D (24 sets)
F# (23 sets)
Pascal (22 sets)
Julia (19 sets)
R (18 sets)
Objective-C (14 sets)
Visual Basic (14 sets)
Lua (13 sets)
Lisp (12 sets)
Dart (11 sets)
Groovy (11 sets)
Racket (8 sets)
J (6 sets)
Scheme (6 sets)
TypeScript (5 sets)
CoffeeScript (4 sets)
Elixir (4 sets)
Picat (4 sets)
Ada (3 sets)
Crystal (3 sets)
Erlang (3 sets)
Factor (3 sets)
Mathematica (3 sets)
Q (3 sets)
Shell (3 sets)
WRAPL (3 sets)
AWK (2 sets)
bc (2 sets)
Cache (2 sets)
Fortran (2 sets)
Smalltalk (2 sets)
Aheui (1 set)
CJam (1 set)
CMake (1 set)
dc (1 set)
Golfscript (1 set)
Logo (1 set)
PowerShell (1 set)
Röda (1 set)
Shakespeare (1 set)

Submission Origin

India (2242 contestants)
United States (1853 contestants)
China (1241 contestants)
Russia (688 contestants)
Japan (545 contestants)
South Korea (487 contestants)
Canada (408 contestants)
France (370 contestants)
Taiwan (369 contestants)
Brazil (321 contestants)
Ukraine (316 contestants)
Germany (268 contestants)
Poland (266 contestants)
Egypt (219 contestants)
Australia (211 contestants)
Vietnam (202 contestants)
United Kingdom (184 contestants)
Bangladesh (182 contestants)
Israel (163 contestants)
Italy (163 contestants)
Thailand (162 contestants)
Romania (158 contestants)
Indonesia (133 contestants)
Singapore (133 contestants)
Spain (128 contestants)
Hungary (122 contestants)
Hong Kong (120 contestants)
Belarus (113 contestants)
Netherlands (105 contestants)
Iran (95 contestants)
Sweden (95 contestants)
Mexico (90 contestants)
Greece (86 contestants)
Colombia (84 contestants)
Turkey (83 contestants)
Argentina (82 contestants)
Slovakia (77 contestants)
Belgium (74 contestants)
Czech Republic (73 contestants)
New Zealand (67 contestants)
Switzerland (62 contestants)
South Africa (60 contestants)
Pakistan (52 contestants)
Lithuania (48 contestants)
Bulgaria (45 contestants)
Philippines (43 contestants)
Portugal (43 contestants)
? (39 contestants)
Peru (39 contestants)
Kazakhstan (36 contestants)
Austria (32 contestants)
Croatia (31 contestants)
Morocco (31 contestants)
Venezuela (30 contestants)
Finland (29 contestants)
Tunisia (29 contestants)
Ireland (27 contestants)
Denmark (26 contestants)
Bolivia (25 contestants)
Slovenia (24 contestants)
Chile (22 contestants)
Latvia (22 contestants)
Norway (22 contestants)
Armenia (21 contestants)
Georgia (20 contestants)
Nigeria (19 contestants)
Moldova (18 contestants)
Serbia (18 contestants)
Sri Lanka (18 contestants)
Malaysia (17 contestants)
Jordan (16 contestants)
Macedonia (15 contestants)
Lebanon (14 contestants)
Iceland (13 contestants)
Syria (11 contestants)
Azerbaijan (10 contestants)
Estonia (10 contestants)
Uzbekistan (10 contestants)
Nepal (9 contestants)
Macau (7 contestants)
Mongolia (7 contestants)
Algeria (6 contestants)
Antarctica (6 contestants)
Cyprus (6 contestants)
Tajikistan (6 contestants)
Cameroon (5 contestants)
Ecuador (5 contestants)
Ethiopia (5 contestants)
Jamaica (5 contestants)
Kyrgyzstan (5 contestants)
Saudi Arabia (5 contestants)
Turkmenistan (5 contestants)
Costa Rica (4 contestants)
Cuba (4 contestants)
Dominican Republic (4 contestants)
United Arab Emirates (4 contestants)
Albania (3 contestants)
Benin (3 contestants)
Kosovo (3 contestants)
Luxembourg (3 contestants)
Puerto Rico (3 contestants)
Uruguay (3 contestants)
Bahamas (2 contestants)
Gabon (2 contestants)
Guadeloupe (2 contestants)
Kenya (2 contestants)
Malta (2 contestants)
Mauritius (2 contestants)
Palestine (2 contestants)
U.S. Virgin Islands (2 contestants)
Uganda (2 contestants)
Afghanistan (1 contestant)
Aruba (1 contestant)
Bahrain (1 contestant)
Bosnia and Herzegovina (1 contestant)
Burkina Faso (1 contestant)
Cambodia (1 contestant)
Guatemala (1 contestant)
Guernsey (1 contestant)
Isle of Man (1 contestant)
Jersey (1 contestant)
Madagascar (1 contestant)
Myanmar (1 contestant)
Nicaragua (1 contestant)
North Korea (1 contestant)
Panama (1 contestant)
Paraguay (1 contestant)
Rwanda (1 contestant)
Réunion (1 contestant)
South Sudan (1 contestant)
Svalbard and Jan Mayen (1 contestant)
Togo (1 contestant)
Trinidad and Tobago (1 contestant)
Vatican City (1 contestant)
Western Sahara (1 contestant)