Language Details: Ruby

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Problems solved

Qualification Round (906 solutions by 320 contestants):
Round 1A (141 solutions by 55 contestants):
Round 1B (51 solutions by 27 contestants):
Round 1C (129 solutions by 49 contestants):
Round 2 (31 solutions by 15 contestants):

Submission Origin

United States (70 contestants)
Japan (53 contestants)
India (17 contestants)
France (14 contestants)
Brazil (11 contestants)
Canada (10 contestants)
China (10 contestants)
United Kingdom (10 contestants)
Spain (9 contestants)
South Korea (8 contestants)
Taiwan (8 contestants)
Mexico (7 contestants)
Germany (6 contestants)
Australia (5 contestants)
Hungary (5 contestants)
Portugal (5 contestants)
Belarus (4 contestants)
Colombia (4 contestants)
Greece (4 contestants)
Hong Kong (4 contestants)
South Africa (4 contestants)
Thailand (4 contestants)
Ukraine (4 contestants)
Belgium (3 contestants)
Poland (3 contestants)
Romania (3 contestants)
Russia (3 contestants)
Vietnam (3 contestants)
Argentina (2 contestants)
Denmark (2 contestants)
Egypt (2 contestants)
Indonesia (2 contestants)
Netherlands (2 contestants)
New Zealand (2 contestants)
Singapore (2 contestants)
Slovakia (2 contestants)
Syria (2 contestants)
Albania (1 contestant)
Antarctica (1 contestant)
Austria (1 contestant)
Bangladesh (1 contestant)
Bolivia (1 contestant)
Chile (1 contestant)
Croatia (1 contestant)
Cyprus (1 contestant)
Iran (1 contestant)
Israel (1 contestant)
Jordan (1 contestant)
Nicaragua (1 contestant)
Nigeria (1 contestant)
Norway (1 contestant)
Slovenia (1 contestant)
Sri Lanka (1 contestant)
Sweden (1 contestant)
Tunisia (1 contestant)
Unknown or Invalid Region (1 contestant)