Language Details: Ruby

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Problems solved

Qualification Round (1022 solutions by 253 contestants):
Round 1A (80 solutions by 35 contestants):
Round 1B (232 solutions by 89 contestants):
Round 1C (110 solutions by 38 contestants):
Round 2 (37 solutions by 13 contestants):
Round 3 (1 solution by 1 contestant):

Submission Origin

United States (51 contestants)
Japan (47 contestants)
India (19 contestants)
Canada (13 contestants)
Brazil (11 contestants)
France (10 contestants)
Thailand (7 contestants)
Israel (6 contestants)
Taiwan (6 contestants)
United Kingdom (6 contestants)
China (5 contestants)
Netherlands (5 contestants)
Sweden (5 contestants)
Germany (4 contestants)
Russia (4 contestants)
Australia (3 contestants)
Belarus (3 contestants)
Greece (3 contestants)
Hong Kong (3 contestants)
Romania (3 contestants)
South Korea (3 contestants)
Spain (3 contestants)
Ukraine (3 contestants)
Argentina (2 contestants)
Belgium (2 contestants)
Chile (2 contestants)
Hungary (2 contestants)
Indonesia (2 contestants)
Mexico (2 contestants)
Portugal (2 contestants)
Albania (1 contestant)
Algeria (1 contestant)
Austria (1 contestant)
Bangladesh (1 contestant)
Bolivia (1 contestant)
Bulgaria (1 contestant)
Colombia (1 contestant)
Croatia (1 contestant)
Czech Republic (1 contestant)
Egypt (1 contestant)
Italy (1 contestant)
Jamaica (1 contestant)
Kazakhstan (1 contestant)
Kosovo (1 contestant)
Latvia (1 contestant)
Moldova (1 contestant)
Nigeria (1 contestant)
Norway (1 contestant)
Philippines (1 contestant)
Poland (1 contestant)
Singapore (1 contestant)
Slovakia (1 contestant)
Slovenia (1 contestant)
Switzerland (1 contestant)
Turkey (1 contestant)