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Problems solved

Qualification Round (13327 solutions by 4825 contestants):
Round 1A (2416 solutions by 886 contestants):
  • Mushroom Monster: 847 small solutions, 833 large solutions.
  • Haircut: 430 small solutions, 176 large solutions.
  • Logging: 101 small solutions, 29 large solutions.
Round 1B (950 solutions by 445 contestants):
Round 1C (1513 solutions by 607 contestants):
Round 2 (783 solutions by 233 contestants):
  • Pegman: 212 small solutions, 209 large solutions.
  • Kiddie Pool: 150 small solutions, 19 large solutions.
  • Bilingual: 134 small solutions, 22 large solutions.
  • Drum Decorator: 28 small solutions, 9 large solutions.
Round 3 (133 solutions by 38 contestants):
Final Round (12 solutions by 2 contestants):

Submission Origin

India (1136 contestants)
United States (986 contestants)
China (181 contestants)
Canada (157 contestants)
Russia (154 contestants)
Egypt (118 contestants)
Sri Lanka (110 contestants)
Japan (101 contestants)
France (99 contestants)
Germany (85 contestants)
Colombia (80 contestants)
Ukraine (77 contestants)
Australia (71 contestants)
South Korea (67 contestants)
United Kingdom (63 contestants)
Singapore (62 contestants)
Brazil (58 contestants)
Mexico (57 contestants)
Poland (57 contestants)
Spain (51 contestants)
Italy (49 contestants)
South Africa (49 contestants)
Taiwan (43 contestants)
Turkey (43 contestants)
Romania (41 contestants)
Hungary (40 contestants)
Vietnam (40 contestants)
New Zealand (39 contestants)
Israel (34 contestants)
Hong Kong (33 contestants)
Pakistan (33 contestants)
Thailand (31 contestants)
Indonesia (30 contestants)
Netherlands (30 contestants)
Nigeria (29 contestants)
Belarus (28 contestants)
Greece (28 contestants)
Sweden (27 contestants)
Belgium (23 contestants)
Slovakia (22 contestants)
Philippines (20 contestants)
Czech Republic (18 contestants)
Iran (17 contestants)
Bangladesh (16 contestants)
Argentina (15 contestants)
Morocco (15 contestants)
Kazakhstan (14 contestants)
Austria (12 contestants)
Croatia (12 contestants)
Switzerland (12 contestants)
Tunisia (12 contestants)
Norway (11 contestants)
Portugal (10 contestants)
Cameroon (9 contestants)
Georgia (9 contestants)
Lithuania (9 contestants)
Macedonia (9 contestants)
Malaysia (9 contestants)
Palestine (9 contestants)
Azerbaijan (8 contestants)
Denmark (8 contestants)
Estonia (8 contestants)
Kenya (8 contestants)
Slovenia (8 contestants)
Venezuela (8 contestants)
Bulgaria (7 contestants)
Finland (7 contestants)
Guatemala (7 contestants)
Ireland (7 contestants)
Saudi Arabia (7 contestants)
Uzbekistan (7 contestants)
Algeria (6 contestants)
Chile (6 contestants)
Benin (5 contestants)
Moldova (5 contestants)
Nepal (5 contestants)
Bolivia (4 contestants)
Jordan (4 contestants)
Latvia (4 contestants)
Lebanon (4 contestants)
Cambodia (3 contestants)
Cyprus (3 contestants)
Ecuador (3 contestants)
Peru (3 contestants)
Serbia (3 contestants)
Uruguay (3 contestants)
Antarctica (2 contestants)
Cuba (2 contestants)
Dominican Republic (2 contestants)
Kosovo (2 contestants)
Kuwait (2 contestants)
Luxembourg (2 contestants)
Madagascar (2 contestants)
Malta (2 contestants)
Mongolia (2 contestants)
Mozambique (2 contestants)
Myanmar (2 contestants)
Tajikistan (2 contestants)
Togo (2 contestants)
Unknown or Invalid Region (2 contestants)
Anguilla (1 contestant)
Burkina Faso (1 contestant)
Christmas Island (1 contestant)
Congo (1 contestant)
Djibouti (1 contestant)
Guadeloupe (1 contestant)
Jamaica (1 contestant)
Kyrgyzstan (1 contestant)
Martinique (1 contestant)
Nicaragua (1 contestant)
Paraguay (1 contestant)
Puerto Rico (1 contestant)
Senegal (1 contestant)
Tanzania (1 contestant)
Zambia (1 contestant)
Zimbabwe (1 contestant)
Ă…land Islands (1 contestant)