Round 1B: The Next Number

2603 correct small sets and 1918 correct large sets.

Languages

C++ (2841 solutions)
Java (675 solutions)
Python (365 solutions)
C# (230 solutions)
C (141 solutions)
Pascal (59 solutions)
Perl (53 solutions)
Ruby (47 solutions)
Haskell (39 solutions)
PHP (29 solutions)
Objective-C (9 solutions)
Visual Basic (8 solutions)
Lisp (5 solutions)
Scheme (4 solutions)
D (2 solutions)
F# (2 solutions)
Factor (2 solutions)
Lua (2 solutions)
OCaml (2 solutions)
ActionScript (1 solution)
Javascript (1 solution)
Scala (1 solution)

Submission Origin

China (394 people)
India (371 people)
Russia (268 people)
United States (158 people)
Poland (107 people)
Japan (97 people)
Ukraine (85 people)
Brazil (80 people)
South Korea (64 people)
Romania (61 people)
Taiwan (48 people)
Canada (42 people)
Belarus (37 people)
Vietnam (35 people)
Indonesia (34 people)
Bangladesh (33 people)
Argentina (31 people)
Germany (31 people)
Hungary (29 people)
Bulgaria (28 people)
Colombia (27 people)
France (26 people)
Thailand (26 people)
Spain (24 people)
Italy (23 people)
Hong Kong (22 people)
Mexico (22 people)
Netherlands (22 people)
Egypt (21 people)
Israel (21 people)
Slovakia (Slovak Republic) (21 people)
South Africa (20 people)
United Kingdom (20 people)
Czech Republic (18 people)
Australia (15 people)
Lithuania (14 people)
Serbia (13 people)
Kazakhstan (12 people)
Peru (12 people)
Portugal (12 people)
Turkey (12 people)
Venezuela (12 people)
Armenia (9 people)
Latvia (9 people)
New Zealand (9 people)
Sweden (9 people)
Finland (8 people)
Singapore (8 people)
Estonia (7 people)
Denmark (6 people)
Moldova (6 people)
Austria (5 people)
Belgium (5 people)
Georgia (5 people)
Morocco (5 people)
Pakistan (5 people)
Bolivia (4 people)
Croatia (4 people)
Greece (4 people)
Iran (4 people)
Malaysia (4 people)
Slovenia (4 people)
Macedonia (3 people)
Sri Lanka (3 people)
Switzerland (3 people)
Bosnia and Herzegovina (2 people)
Dominican Republic (2 people)
Lebanon (2 people)
Norway (2 people)
Philippines (2 people)
Uruguay (2 people)
Algeria (1 people)
Cameroon (1 people)
Congo, Republic of (1 people)
Guatemala (1 people)
Ireland (1 people)
Kyrgyzstan (1 people)
Nepal (1 people)
Palestinian Territory (1 people)
St Vincent & Grenadines (1 people)
Sudan (1 people)
Uzbekistan (1 people)