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Problems solved

Qualification Round (380 solutions by 171 contestants):
Round 1A (20 solutions by 11 contestants):
  • Rotate: 8 small solutions, 7 large solutions.
  • Number Game: 4 small solutions, 1 large solution.
Round 1B (95 solutions by 42 contestants):
Round 1C (79 solutions by 35 contestants):
Round 2 (9 solutions by 5 contestants):

Submission Origin

India (22 contestants)
United States (18 contestants)
Brazil (13 contestants)
Russia (11 contestants)
France (8 contestants)
Japan (8 contestants)
Taiwan (7 contestants)
Argentina (6 contestants)
Colombia (6 contestants)
Czech Republic (6 contestants)
Australia (5 contestants)
Italy (5 contestants)
Mexico (5 contestants)
Poland (5 contestants)
Canada (4 contestants)
China (4 contestants)
Netherlands (4 contestants)
Spain (4 contestants)
Thailand (4 contestants)
Hong Kong (3 contestants)
Israel (3 contestants)
Ukraine (3 contestants)
Belgium (2 contestants)
Germany (2 contestants)
Greece (2 contestants)
Indonesia (2 contestants)
Ireland (2 contestants)
New Zealand (2 contestants)
Portugal (2 contestants)
Romania (2 contestants)
Slovakia (2 contestants)
Tunisia (2 contestants)
Bangladesh (1 contestant)
Belarus (1 contestant)
Bulgaria (1 contestant)
Costa Rica (1 contestant)
Egypt (1 contestant)
Hungary (1 contestant)
Jordan (1 contestant)
Latvia (1 contestant)
Lebanon (1 contestant)
Lithuania (1 contestant)
Morocco (1 contestant)
Nigeria (1 contestant)
Norway (1 contestant)
Pakistan (1 contestant)
Philippines (1 contestant)
South Africa (1 contestant)
Sri Lanka (1 contestant)
Turkey (1 contestant)
United Kingdom (1 contestant)
Vietnam (1 contestant)