Round 1C: Making Chess Boards

640 correct small sets and 226 correct large sets. View problem statement or contest analysis.

Languages

C++ (518 sets)
Java (165 sets)
Python (59 sets)
C# (44 sets)
C (35 sets)

Pascal (21 sets)
PHP (5 sets)
Ruby (5 sets)
Go (2 sets)
Haskell (2 sets)

OCaml (2 sets)
Perl (2 sets)
Scala (2 sets)
Visual Basic (2 sets)
Boo (1 set)

China (135 contestants)
Russia (72 contestants)
India (42 contestants)
Japan (38 contestants)
United States (38 contestants)
Ukraine (22 contestants)
Poland (19 contestants)
Australia (13 contestants)
Hungary (13 contestants)
Romania (13 contestants)
South Korea (13 contestants)
Taiwan (12 contestants)
Germany (11 contestants)
Hong Kong (11 contestants)
Spain (10 contestants)
United Kingdom (10 contestants)
Bangladesh (9 contestants)
Belarus (9 contestants)
Indonesia (9 contestants)
Croatia (8 contestants)
France (8 contestants)
Slovakia (8 contestants)

Thailand (8 contestants)
Vietnam (8 contestants)
Brazil (7 contestants)
Bulgaria (7 contestants)
Israel (6 contestants)
Mexico (6 contestants)
Canada (5 contestants)
Lithuania (5 contestants)
South Africa (5 contestants)
Egypt (4 contestants)
Netherlands (4 contestants)
Argentina (3 contestants)
Italy (3 contestants)
Kazakhstan (3 contestants)
New Zealand (3 contestants)
Norway (3 contestants)
Turkey (3 contestants)
Azerbaijan (2 contestants)
Finland (2 contestants)
Greece (2 contestants)
Latvia (2 contestants)
Macedonia (2 contestants)

Pakistan (2 contestants)
Portugal (2 contestants)
Singapore (2 contestants)
Armenia (1 contestant)
Austria (1 contestant)
Belgium (1 contestant)
Chile (1 contestant)
Czech Republic (1 contestant)
Denmark (1 contestant)
Georgia (1 contestant)
Iran (1 contestant)
Jordan (1 contestant)
Kyrgyzstan (1 contestant)
Mongolia (1 contestant)
Philippines (1 contestant)
Serbia (1 contestant)
Sri Lanka (1 contestant)
Sweden (1 contestant)
Switzerland (1 contestant)
Uruguay (1 contestant)
Venezuela (1 contestant)