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Problems solved

Qualification Round (37825 solutions by 11295 contestants):
Round 1A (9586 solutions by 2861 contestants):
  • Mushroom Monster: 2707 small solutions, 2649 large solutions.
  • Haircut: 1794 small solutions, 1267 large solutions.
  • Logging: 875 small solutions, 294 large solutions.
Round 1B (5394 solutions by 2293 contestants):
Round 1C (5974 solutions by 2075 contestants):
Round 2 (5739 solutions by 1750 contestants):
  • Pegman: 1684 small solutions, 1662 large solutions.
  • Kiddie Pool: 1115 small solutions, 237 large solutions.
  • Bilingual: 722 small solutions, 137 large solutions.
  • Drum Decorator: 145 small solutions, 37 large solutions.
Round 3 (1001 solutions by 285 contestants):
Final Round (144 solutions by 23 contestants):

Submission Origin

India (3038 contestants)
China (1691 contestants)
United States (690 contestants)
Russia (569 contestants)
Japan (383 contestants)
South Korea (349 contestants)
Bangladesh (338 contestants)
Taiwan (310 contestants)
Egypt (308 contestants)
Poland (267 contestants)
Brazil (253 contestants)
Ukraine (182 contestants)
Canada (178 contestants)
Romania (177 contestants)
Indonesia (144 contestants)
France (124 contestants)
Vietnam (120 contestants)
Thailand (106 contestants)
Australia (95 contestants)
Mexico (93 contestants)
Iran (92 contestants)
Hong Kong (91 contestants)
Belarus (89 contestants)
Germany (88 contestants)
Argentina (81 contestants)
Singapore (78 contestants)
Colombia (69 contestants)
Turkey (68 contestants)
Italy (67 contestants)
Peru (67 contestants)
Slovakia (67 contestants)
Pakistan (66 contestants)
Spain (65 contestants)
United Kingdom (59 contestants)
Hungary (53 contestants)
Czech Republic (49 contestants)
Kazakhstan (45 contestants)
Bulgaria (42 contestants)
Greece (42 contestants)
Bolivia (41 contestants)
Netherlands (32 contestants)
Sweden (32 contestants)
Croatia (31 contestants)
Venezuela (29 contestants)
Belgium (28 contestants)
Georgia (28 contestants)
Switzerland (28 contestants)
Israel (24 contestants)
New Zealand (24 contestants)
Portugal (22 contestants)
Serbia (22 contestants)
Lithuania (21 contestants)
Jordan (20 contestants)
Palestine (20 contestants)
Latvia (19 contestants)
Lebanon (19 contestants)
Morocco (19 contestants)
South Africa (19 contestants)
Finland (18 contestants)
Norway (18 contestants)
Tunisia (18 contestants)
Armenia (17 contestants)
Philippines (17 contestants)
Slovenia (16 contestants)
Sri Lanka (15 contestants)
Austria (12 contestants)
Mongolia (12 contestants)
Azerbaijan (11 contestants)
Chile (11 contestants)
Turkmenistan (11 contestants)
Uzbekistan (11 contestants)
Moldova (10 contestants)
Cyprus (9 contestants)
Kyrgyzstan (8 contestants)
Malaysia (8 contestants)
Syria (8 contestants)
Cameroon (7 contestants)
Iceland (7 contestants)
Ireland (7 contestants)
Nigeria (7 contestants)
Estonia (6 contestants)
Dominican Republic (5 contestants)
Luxembourg (5 contestants)
Albania (4 contestants)
Cuba (4 contestants)
Nepal (4 contestants)
Puerto Rico (4 contestants)
Tajikistan (4 contestants)
Algeria (3 contestants)
Benin (3 contestants)
Denmark (3 contestants)
Unknown or Invalid Region (3 contestants)
Åland Islands (3 contestants)
Afghanistan (2 contestants)
American Samoa (2 contestants)
Antarctica (2 contestants)
Antigua and Barbuda (2 contestants)
Bosnia and Herzegovina (2 contestants)
Costa Rica (2 contestants)
Jamaica (2 contestants)
Macedonia (2 contestants)
Mauritius (2 contestants)
Montenegro (2 contestants)
United Arab Emirates (2 contestants)
Andorra (1 contestant)
Angola (1 contestant)
Anguilla (1 contestant)
Cambodia (1 contestant)
Cayman Islands (1 contestant)
Equatorial Guinea (1 contestant)
Ethiopia (1 contestant)
Gabon (1 contestant)
Greenland (1 contestant)
Grenada (1 contestant)
Guatemala (1 contestant)
Macau (1 contestant)
Madagascar (1 contestant)
Malta (1 contestant)
Namibia (1 contestant)
North Korea (1 contestant)
Papua New Guinea (1 contestant)
Qatar (1 contestant)
Rwanda (1 contestant)
Saint Barthélemy (1 contestant)
Saudi Arabia (1 contestant)
U.S. Virgin Islands (1 contestant)