Round 1C: Diamond Inheritance

3062 correct small sets and 2374 correct large sets. View problem statement or contest analysis.

Languages

C++ (3108 sets)
Java (997 sets)
Python (598 sets)
C# (247 sets)
C (149 sets)
Ruby (78 sets)
Pascal (43 sets)
Haskell (42 sets)
Perl (30 sets)
PHP (26 sets)

Javascript (18 sets)
Scala (17 sets)
F# (12 sets)
OCaml (12 sets)
Lisp (10 sets)
MATLAB (10 sets)
Go (6 sets)
Scheme (6 sets)
Groovy (5 sets)
Visual Basic (5 sets)

Ada (2 sets)
Basic (2 sets)
Clojure (2 sets)
Gosu (2 sets)
Lua (2 sets)
Objective-C (2 sets)
CoffeeScript (1 set)
TCL (1 set)

China (530 contestants)
India (375 contestants)
Russia (187 contestants)
United States (185 contestants)
Japan (175 contestants)
Ukraine (111 contestants)
Poland (100 contestants)
France (82 contestants)
Taiwan (79 contestants)
Australia (60 contestants)
Germany (57 contestants)
South Korea (57 contestants)
Egypt (49 contestants)
Thailand (47 contestants)
Bangladesh (46 contestants)
Brazil (46 contestants)
United Kingdom (46 contestants)
Romania (43 contestants)
Indonesia (42 contestants)
Hong Kong (41 contestants)
Vietnam (36 contestants)
Belarus (35 contestants)
Spain (34 contestants)
Hungary (33 contestants)
Canada (31 contestants)
Netherlands (28 contestants)
Italy (27 contestants)
Slovakia (26 contestants)
Sweden (25 contestants)
South Africa (24 contestants)
Greece (22 contestants)
Iran (20 contestants)

Czech Republic (18 contestants)
Colombia (17 contestants)
... (16 contestants)
Argentina (16 contestants)
Switzerland (16 contestants)
Belgium (15 contestants)
Singapore (15 contestants)
Bulgaria (14 contestants)
Croatia (13 contestants)
Israel (13 contestants)
Mexico (13 contestants)
Norway (13 contestants)
New Zealand (11 contestants)
Turkey (11 contestants)
Peru (10 contestants)
Austria (8 contestants)
Kazakhstan (8 contestants)
Lithuania (8 contestants)
Pakistan (7 contestants)
Sri Lanka (7 contestants)
Venezuela (7 contestants)
Armenia (6 contestants)
Estonia (6 contestants)
Latvia (6 contestants)
Portugal (6 contestants)
Azerbaijan (5 contestants)
Morocco (5 contestants)
Slovenia (5 contestants)
Finland (4 contestants)
Georgia (4 contestants)
Macedonia (4 contestants)
Serbia (4 contestants)

Bolivia (3 contestants)
Chile (3 contestants)
Denmark (3 contestants)
Lebanon (3 contestants)
Philippines (3 contestants)
Uruguay (3 contestants)
Algeria (2 contestants)
Cameroon (2 contestants)
Cyprus (2 contestants)
Dominican Republic (2 contestants)
Iceland (2 contestants)
Jordan (2 contestants)
Moldova (2 contestants)
Togo (2 contestants)
Andorra (1 contestant)
Antigua and Barbuda (1 contestant)
Costa Rica (1 contestant)
Cuba (1 contestant)
Ecuador (1 contestant)
Fiji (1 contestant)
Ghana (1 contestant)
Ireland (1 contestant)
Kyrgyzstan (1 contestant)
Macau (1 contestant)
Madagascar (1 contestant)
Namibia (1 contestant)
Nepal (1 contestant)
Palestinian Territory (1 contestant)
Rwanda (1 contestant)
Tunisia (1 contestant)
Tuvalu (1 contestant)
United Arab Emirates (1 contestant)