Language Details: Ruby

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Problems solved

Qualification Round (396 solutions by 122 contestants):
Round 1A (100 solutions by 44 contestants):
Round 1B (53 solutions by 39 contestants):
Round 1C (95 solutions by 44 contestants):
Round 2 (55 solutions by 25 contestants):
Round 3 (10 solutions by 5 contestants):
APAC Semifinal (3 solutions by 1 contestant):

Submission Origin

United States (34 contestants)
Japan (16 contestants)
Brazil (9 contestants)
Poland (6 contestants)
South Korea (6 contestants)
India (5 contestants)
Russia (5 contestants)
United Kingdom (5 contestants)
Belarus (3 contestants)
Belgium (3 contestants)
Canada (3 contestants)
Colombia (3 contestants)
Germany (3 contestants)
Philippines (3 contestants)
Spain (3 contestants)
Taiwan (3 contestants)
Austria (2 contestants)
France (2 contestants)
Italy (2 contestants)
Sweden (2 contestants)
Thailand (2 contestants)
Argentina (1 contestant)
Australia (1 contestant)
China (1 contestant)
Peru (1 contestant)
Singapore (1 contestant)
South Africa (1 contestant)
Switzerland (1 contestant)
Ukraine (1 contestant)
Venezuela (1 contestant)