Qualification Round: Ominous Omino

7339 correct small sets and 686 correct large sets. View problem statement or contest analysis.

Compact solutions

Solved in...

C++ (4026 sets)
Java (1507 sets)
Python (1312 sets)
C (365 sets)
C# (262 sets)
Ruby (96 sets)
Haskell (62 sets)
PHP (46 sets)
Scala (46 sets)
Go (42 sets)
JavaScript (40 sets)
Perl (37 sets)
MATLAB (18 sets)
OCaml (17 sets)
Visual Basic (14 sets)
D (11 sets)
R (8 sets)
Rust (8 sets)
F# (7 sets)
Lisp (7 sets)
Clojure (6 sets)
Groovy (6 sets)
Pascal (5 sets)
Shell (4 sets)
Julia (3 sets)
Lua (3 sets)
Swift (3 sets)
AWK (2 sets)
Dart (2 sets)
Fortran (2 sets)
Objective-C (2 sets)
PowerShell (2 sets)
Racket (2 sets)
Spreadsheet (2 sets)
ActionScript (1 set)
Brainfuck (1 set)
CoffeeScript (1 set)
Elixir (1 set)
Kotlin (1 set)
Markov algorithm (1 set)
Picat (1 set)
Piet (1 set)
Prolog (1 set)
Scheme (1 set)
SQL (1 set)
XSLT (1 set)

Submission Origin

India (1536 contestants)
United States (884 contestants)
China (689 contestants)
Russia (306 contestants)
Japan (303 contestants)
Canada (198 contestants)
South Korea (186 contestants)
Taiwan (183 contestants)
France (181 contestants)
Poland (143 contestants)
Egypt (135 contestants)
Germany (126 contestants)
Ukraine (126 contestants)
Australia (112 contestants)
Brazil (109 contestants)
Romania (104 contestants)
Thailand (88 contestants)
Indonesia (86 contestants)
United Kingdom (86 contestants)
Singapore (85 contestants)
Bangladesh (79 contestants)
Hong Kong (74 contestants)
Hungary (73 contestants)
Spain (72 contestants)
Italy (66 contestants)
Sri Lanka (60 contestants)
Slovakia (59 contestants)
Belarus (57 contestants)
Israel (55 contestants)
Mexico (50 contestants)
Netherlands (48 contestants)
Vietnam (47 contestants)
Iran (46 contestants)
Czech Republic (44 contestants)
Argentina (39 contestants)
Colombia (39 contestants)
Greece (38 contestants)
Turkey (34 contestants)
Belgium (33 contestants)
New Zealand (33 contestants)
Sweden (33 contestants)
Switzerland (31 contestants)
Pakistan (30 contestants)
South Africa (27 contestants)
Bolivia (21 contestants)
Lithuania (21 contestants)
Philippines (21 contestants)
Venezuela (20 contestants)
Nigeria (19 contestants)
Portugal (18 contestants)
Norway (17 contestants)
Chile (16 contestants)
Croatia (16 contestants)
Lebanon (16 contestants)
Bulgaria (15 contestants)
Jordan (15 contestants)
Morocco (14 contestants)
Peru (14 contestants)
Austria (13 contestants)
Finland (13 contestants)
Kazakhstan (13 contestants)
Serbia (13 contestants)
Slovenia (13 contestants)
Palestine (12 contestants)
Tunisia (11 contestants)
Denmark (10 contestants)
Armenia (9 contestants)
Georgia (9 contestants)
Ireland (9 contestants)
Malaysia (9 contestants)
Azerbaijan (8 contestants)
Latvia (8 contestants)
Cyprus (7 contestants)
Benin (6 contestants)
Kyrgyzstan (6 contestants)
Uzbekistan (6 contestants)
Algeria (5 contestants)
Estonia (5 contestants)
Cameroon (4 contestants)
Iceland (4 contestants)
Moldova (4 contestants)
Mongolia (4 contestants)
Nepal (4 contestants)
Saudi Arabia (4 contestants)
Syria (4 contestants)
Guatemala (3 contestants)
Macedonia (3 contestants)
United Arab Emirates (3 contestants)
Uruguay (3 contestants)
Antigua and Barbuda (2 contestants)
Costa Rica (2 contestants)
Dominican Republic (2 contestants)
Kuwait (2 contestants)
Macau (2 contestants)
Paraguay (2 contestants)
Unknown or Invalid Region (2 contestants)
Afghanistan (1 contestant)
American Samoa (1 contestant)
Angola (1 contestant)
Antarctica (1 contestant)
Bosnia and Herzegovina (1 contestant)
Cambodia (1 contestant)
Christmas Island (1 contestant)
Cuba (1 contestant)
Ethiopia (1 contestant)
Guernsey (1 contestant)
Jamaica (1 contestant)
Kenya (1 contestant)
Kosovo (1 contestant)
Luxembourg (1 contestant)
Madagascar (1 contestant)
Martinique (1 contestant)
Mauritius (1 contestant)
Myanmar (1 contestant)
North Korea (1 contestant)
Puerto Rico (1 contestant)
Rwanda (1 contestant)
Tajikistan (1 contestant)
Western Sahara (1 contestant)
Ă…land Islands (1 contestant)