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Problems solved

Qualification Round (5630 solutions by 1783 contestants):
Round 1A (896 solutions by 573 contestants):
Round 1B (678 solutions by 394 contestants):
Round 1C (1138 solutions by 599 contestants):
Round 2 (768 solutions by 275 contestants):
Round 3 (276 solutions by 108 contestants):
APAC Semifinal (37 solutions by 13 contestants):
AMER Semifinal (48 solutions by 13 contestants):
EMEA Semifinal (127 solutions by 34 contestants):
World Finals (90 solutions by 19 contestants):

Submission Origin

India (358 contestants)
United States (313 contestants)
China (131 contestants)
Brazil (110 contestants)
Russia (106 contestants)
Colombia (69 contestants)
Canada (50 contestants)
Australia (48 contestants)
Thailand (39 contestants)
Japan (34 contestants)
South Korea (32 contestants)
Spain (31 contestants)
Ukraine (30 contestants)
Germany (29 contestants)
Hungary (29 contestants)
United Kingdom (26 contestants)
Poland (24 contestants)
Israel (22 contestants)
Argentina (19 contestants)
France (19 contestants)
Singapore (19 contestants)
Pakistan (18 contestants)
Egypt (17 contestants)
Mexico (17 contestants)
New Zealand (17 contestants)
Taiwan (17 contestants)
Venezuela (16 contestants)
South Africa (14 contestants)
Indonesia (13 contestants)
Belarus (12 contestants)
Romania (11 contestants)
Italy (10 contestants)
Netherlands (10 contestants)
Sri Lanka (10 contestants)
Switzerland (10 contestants)
Morocco (8 contestants)
Peru (8 contestants)
Serbia and Montenegro (8 contestants)
Sweden (8 contestants)
Austria (7 contestants)
Czech Republic (7 contestants)
Turkey (7 contestants)
Bulgaria (6 contestants)
Philippines (6 contestants)
Portugal (6 contestants)
Slovakia (6 contestants)
Chile (4 contestants)
Cyprus (4 contestants)
Hong Kong (4 contestants)
Macedonia (4 contestants)
Norway (4 contestants)
Denmark (3 contestants)
Estonia (3 contestants)
Georgia (3 contestants)
Ireland (3 contestants)
Kazakhstan (3 contestants)
Vietnam (3 contestants)
Belgium (2 contestants)
Costa Rica (2 contestants)
Croatia (2 contestants)
Guatemala (2 contestants)
Jordan (2 contestants)
Latvia (2 contestants)
Lithuania (2 contestants)
Malaysia (2 contestants)
Uruguay (2 contestants)
Afghanistan (1 contestant)
Algeria (1 contestant)
Azerbaijan (1 contestant)
Bangladesh (1 contestant)
Bosnia and Herzegovina (1 contestant)
Falkland Islands (Malvinas) (1 contestant)
Finland (1 contestant)
Greece (1 contestant)
Macau (1 contestant)
Malta (1 contestant)
Moldova (1 contestant)
Nepal (1 contestant)
Oman (1 contestant)
Palestinian Territory (1 contestant)
Paraguay (1 contestant)
Slovenia (1 contestant)
Uganda (1 contestant)
United Arab Emirates (1 contestant)