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Problems solved

Qualification Round (56428 solutions by 12047 contestants):
Round 1A (8348 solutions by 2982 contestants):
Round 1B (13102 solutions by 4266 contestants):
Round 1C (7250 solutions by 2276 contestants):
Round 2 (5655 solutions by 1935 contestants):
Round 3 (1104 solutions by 303 contestants):
Final Round (84 solutions by 22 contestants):

Submission Origin

India (3381 contestants)
China (1248 contestants)
United States (757 contestants)
Russia (625 contestants)
South Korea (514 contestants)
Japan (427 contestants)
Bangladesh (379 contestants)
Brazil (351 contestants)
Taiwan (343 contestants)
Egypt (311 contestants)
Canada (233 contestants)
Poland (223 contestants)
Ukraine (216 contestants)
Vietnam (190 contestants)
Indonesia (184 contestants)
Thailand (158 contestants)
Romania (148 contestants)
Mexico (126 contestants)
France (117 contestants)
Australia (106 contestants)
Germany (100 contestants)
Iran (100 contestants)
Hong Kong (95 contestants)
Belarus (90 contestants)
Italy (85 contestants)
Colombia (83 contestants)
Hungary (83 contestants)
Pakistan (79 contestants)
Argentina (77 contestants)
Peru (76 contestants)
Singapore (76 contestants)
Spain (60 contestants)
United Kingdom (56 contestants)
Kazakhstan (53 contestants)
Sweden (51 contestants)
Turkey (47 contestants)
Greece (46 contestants)
Slovakia (45 contestants)
Tunisia (44 contestants)
Czech Republic (42 contestants)
Bulgaria (39 contestants)
Bolivia (37 contestants)
Israel (36 contestants)
Netherlands (36 contestants)
Switzerland (36 contestants)
Philippines (33 contestants)
Venezuela (32 contestants)
? (31 contestants)
Morocco (30 contestants)
Croatia (28 contestants)
Lithuania (26 contestants)
Georgia (24 contestants)
Belgium (23 contestants)
Armenia (21 contestants)
Malaysia (21 contestants)
Jordan (20 contestants)
South Africa (20 contestants)
Portugal (19 contestants)
Serbia (19 contestants)
Finland (17 contestants)
New Zealand (17 contestants)
Austria (16 contestants)
Ireland (16 contestants)
Latvia (15 contestants)
Macedonia (14 contestants)
Lebanon (13 contestants)
Moldova (13 contestants)
Slovenia (13 contestants)
Syria (13 contestants)
Iceland (12 contestants)
Nepal (10 contestants)
Norway (10 contestants)
Turkmenistan (10 contestants)
Azerbaijan (9 contestants)
Denmark (9 contestants)
Sri Lanka (9 contestants)
Uzbekistan (9 contestants)
Chile (8 contestants)
Mongolia (8 contestants)
Macau (7 contestants)
Algeria (6 contestants)
Cyprus (6 contestants)
Kyrgyzstan (6 contestants)
Nigeria (6 contestants)
Afghanistan (5 contestants)
Antarctica (5 contestants)
Dominican Republic (5 contestants)
Estonia (5 contestants)
Puerto Rico (5 contestants)
Luxembourg (4 contestants)
Palestine (4 contestants)
United Arab Emirates (4 contestants)
Bosnia and Herzegovina (3 contestants)
Costa Rica (3 contestants)
Ethiopia (3 contestants)
Oman (3 contestants)
Saudi Arabia (3 contestants)
Tajikistan (3 contestants)
Albania (1 contestant)
Aruba (1 contestant)
Bahamas (1 contestant)
Bahrain (1 contestant)
Benin (1 contestant)
British Virgin Islands (1 contestant)
Cambodia (1 contestant)
Cameroon (1 contestant)
Gabon (1 contestant)
Ghana (1 contestant)
Greenland (1 contestant)
Guatemala (1 contestant)
Honduras (1 contestant)
Jamaica (1 contestant)
Libya (1 contestant)
Malta (1 contestant)
Mauritius (1 contestant)
North Korea (1 contestant)
Rwanda (1 contestant)
Sudan (1 contestant)
Togo (1 contestant)
Trinidad and Tobago (1 contestant)
U.S. Virgin Islands (1 contestant)
Vatican City (1 contestant)
Yemen (1 contestant)
Zambia (1 contestant)
Zimbabwe (1 contestant)
Ă…land Islands (1 contestant)