Round 1A: Collecting Cards

390 correct small sets and 311 correct large sets. View problem statement or contest analysis.

Languages

C++ (506 sets)
Java (82 sets)
Python (44 sets)
C# (19 sets)
Pascal (14 sets)
C (12 sets)

Mathematica (4 sets)
Haskell (3 sets)
Scala (3 sets)
F# (2 sets)
Lua (2 sets)
OCaml (2 sets)

Perl (2 sets)
Ruby (2 sets)
Scheme (2 sets)
Shell (2 sets)

China (102 contestants)
United States (44 contestants)
Russia (29 contestants)
Japan (27 contestants)
Brazil (16 contestants)
South Korea (16 contestants)
India (15 contestants)
Canada (13 contestants)
Poland (11 contestants)
Bangladesh (8 contestants)
Indonesia (8 contestants)
Taiwan (8 contestants)
Argentina (7 contestants)
Vietnam (7 contestants)
Egypt (6 contestants)
Australia (4 contestants)
Croatia (4 contestants)
Romania (4 contestants)

Slovakia (4 contestants)
Ukraine (4 contestants)
Hong Kong (3 contestants)
Peru (3 contestants)
Spain (3 contestants)
Sweden (3 contestants)
Thailand (3 contestants)
Belarus (2 contestants)
Bulgaria (2 contestants)
France (2 contestants)
Greece (2 contestants)
Kazakhstan (2 contestants)
Lithuania (2 contestants)
Mexico (2 contestants)
New Zealand (2 contestants)
Norway (2 contestants)
Sri Lanka (2 contestants)
Venezuela (2 contestants)

Armenia (1 contestant)
Austria (1 contestant)
Czech Republic (1 contestant)
Finland (1 contestant)
Georgia (1 contestant)
Italy (1 contestant)
Latvia (1 contestant)
Malaysia (1 contestant)
Netherlands (1 contestant)
Portugal (1 contestant)
Serbia (1 contestant)
Slovenia (1 contestant)
South Africa (1 contestant)
Turkey (1 contestant)
U.S. Virgin Islands (1 contestant)
United Kingdom (1 contestant)