Round 1C: Center of Mass

823 correct small sets and 737 correct large sets. View problem statement or contest analysis.

Languages

C++ (952 sets)
Java (215 sets)
Python (160 sets)
C# (83 sets)
C (44 sets)
Ruby (30 sets)

Pascal (24 sets)
Perl (17 sets)
PHP (15 sets)
MATLAB (4 sets)
Scala (4 sets)
ActionScript (2 sets)

Haskell (2 sets)
Lisp (2 sets)
OCaml (2 sets)
Erlang (1 set)
Javascript (1 set)

China (194 contestants)
Russia (98 contestants)
India (71 contestants)
Japan (48 contestants)
Ukraine (38 contestants)
Poland (29 contestants)
United States (29 contestants)
South Korea (20 contestants)
Brazil (19 contestants)
Australia (18 contestants)
Belarus (15 contestants)
Hungary (14 contestants)
Italy (11 contestants)
Bulgaria (10 contestants)
Germany (10 contestants)
Romania (10 contestants)
Vietnam (10 contestants)
Hong Kong (9 contestants)
Netherlands (9 contestants)
Spain (9 contestants)
United Kingdom (9 contestants)
Canada (8 contestants)

South Africa (8 contestants)
Taiwan (8 contestants)
Croatia (7 contestants)
Indonesia (7 contestants)
Sweden (7 contestants)
Thailand (7 contestants)
Georgia (6 contestants)
France (5 contestants)
Turkey (5 contestants)
Bangladesh (4 contestants)
Czech Republic (4 contestants)
Finland (4 contestants)
Israel (4 contestants)
Kazakhstan (4 contestants)
Slovakia (4 contestants)
Armenia (3 contestants)
Belgium (3 contestants)
Colombia (3 contestants)
Denmark (3 contestants)
Egypt (3 contestants)
Lebanon (3 contestants)
Lithuania (3 contestants)

New Zealand (3 contestants)
Peru (3 contestants)
Portugal (3 contestants)
Argentina (2 contestants)
Austria (2 contestants)
Iran (2 contestants)
Latvia (2 contestants)
Mexico (2 contestants)
Serbia (2 contestants)
Jordan (1 contestant)
Kyrgyzstan (1 contestant)
Malaysia (1 contestant)
Morocco (1 contestant)
Namibia (1 contestant)
Norway (1 contestant)
Philippines (1 contestant)
Slovenia (1 contestant)
Switzerland (1 contestant)
Syria (1 contestant)
Venezuela (1 contestant)