Round 3: Portal

159 correct small sets and 123 correct large sets. View problem statement or contest analysis.

Compact solutions

Solved in...

C++ (209 sets)
Java (39 sets)
C# (12 sets)
Pascal (7 sets)
Python (5 sets)
C (4 sets)
Lisp (3 sets)
Visual Basic (2 sets)
Haskell (1 set)

Submission Origin

Russia (33 contestants)
United States (24 contestants)
China (14 contestants)
Japan (10 contestants)
Poland (8 contestants)
Ukraine (6 contestants)
Netherlands (6 contestants)
Canada (5 contestants)
Singapore (4 contestants)
Brazil (4 contestants)
Romania (3 contestants)
Germany (3 contestants)
Argentina (3 contestants)
United Kingdom (2 contestants)
Taiwan (2 contestants)
South Korea (2 contestants)
Indonesia (2 contestants)
Hungary (2 contestants)
Egypt (2 contestants)
Belarus (2 contestants)
Vietnam (1 contestant)
Venezuela (1 contestant)
Thailand (1 contestant)
Switzerland (1 contestant)
Sweden (1 contestant)
Sri Lanka (1 contestant)
Spain (1 contestant)
South Africa (1 contestant)
Slovakia (1 contestant)
Portugal (1 contestant)
New Zealand (1 contestant)
Mexico (1 contestant)
Lithuania (1 contestant)
Kazakhstan (1 contestant)
Italy (1 contestant)
Israel (1 contestant)
India (1 contestant)
Hong Kong (1 contestant)
Denmark (1 contestant)
Bulgaria (1 contestant)
Bolivia (1 contestant)
Australia (1 contestant)