Qualification Round: Watersheds

5201 correct small sets and 4674 correct large sets. View problem statement or contest analysis.

Languages

C++ (5261 sets)
Java (1889 sets)
Python (941 sets)
C# (620 sets)
C (426 sets)
Ruby (152 sets)
Perl (136 sets)
Pascal (126 sets)
PHP (103 sets)
Haskell (61 sets)
Javascript (19 sets)

Visual Basic (18 sets)
Scala (14 sets)
MATLAB (13 sets)
Groovy (12 sets)
OCaml (12 sets)
Scheme (9 sets)
ActionScript (7 sets)
Lisp (7 sets)
Clojure (6 sets)
F# (6 sets)
Lua (4 sets)

Clean (3 sets)
D (2 sets)
Erlang (2 sets)
Fortran (2 sets)
Maple (2 sets)
Boo (1 set)
Eiffel (1 set)
Objective-C (1 set)
PostScript (1 set)
PowerShell (1 set)
Prolog (1 set)

China (976 contestants)
India (530 contestants)
United States (507 contestants)
Russia (403 contestants)
Japan (217 contestants)
Brazil (192 contestants)
Poland (172 contestants)
Ukraine (154 contestants)
South Korea (127 contestants)
Taiwan (97 contestants)
Romania (93 contestants)
Canada (91 contestants)
Australia (83 contestants)
Argentina (72 contestants)
Vietnam (70 contestants)
Germany (67 contestants)
Hungary (67 contestants)
Indonesia (62 contestants)
Spain (57 contestants)
Egypt (51 contestants)
Thailand (51 contestants)
United Kingdom (50 contestants)
Belarus (47 contestants)
Bulgaria (47 contestants)
Bangladesh (45 contestants)
France (45 contestants)
Mexico (42 contestants)
Hong Kong (41 contestants)
Italy (39 contestants)
Netherlands (38 contestants)
Slovakia (38 contestants)
South Africa (34 contestants)
Colombia (32 contestants)
Israel (27 contestants)

Turkey (27 contestants)
Czech Republic (25 contestants)
Kazakhstan (24 contestants)
Portugal (24 contestants)
Sweden (24 contestants)
Peru (23 contestants)
Croatia (21 contestants)
Lithuania (21 contestants)
Singapore (19 contestants)
Venezuela (19 contestants)
New Zealand (18 contestants)
Finland (17 contestants)
Austria (15 contestants)
Belgium (15 contestants)
Denmark (15 contestants)
Georgia (15 contestants)
Switzerland (15 contestants)
Latvia (13 contestants)
Serbia (13 contestants)
Lebanon (12 contestants)
Chile (11 contestants)
Greece (11 contestants)
Pakistan (11 contestants)
Sri Lanka (11 contestants)
Armenia (10 contestants)
Moldova (10 contestants)
Philippines (10 contestants)
Estonia (9 contestants)
Malaysia (9 contestants)
Slovenia (7 contestants)
Jordan (5 contestants)
Macedonia (5 contestants)
Bolivia (4 contestants)
Bosnia and Herzegovina (4 contestants)

Dominican Republic (4 contestants)
Iran (4 contestants)
Kyrgyzstan (4 contestants)
Morocco (4 contestants)
Norway (4 contestants)
Ireland (2 contestants)
Nepal (2 contestants)
Nigeria (2 contestants)
Palestinian Territory (2 contestants)
Uruguay (2 contestants)
Albania (1 contestant)
Algeria (1 contestant)
Andorra (1 contestant)
Angola (1 contestant)
Azerbaijan (1 contestant)
Bahrain (1 contestant)
Barbados (1 contestant)
Bhutan (1 contestant)
Cameroon (1 contestant)
Central African Republic (1 contestant)
Cuba (1 contestant)
Ecuador (1 contestant)
Guatemala (1 contestant)
Madagascar (1 contestant)
Malta (1 contestant)
Mongolia (1 contestant)
Nicaragua (1 contestant)
Rwanda (1 contestant)
Saudi Arabia (1 contestant)
St Vincent & Grenadines (1 contestant)
Syria (1 contestant)
U.S. Virgin Islands (1 contestant)
Zimbabwe (1 contestant)