Round 1A: Rank and File
4532 correct small sets and 4041 correct large sets. View problem statement or contest analysis.
Compact solutions
 aditsu in CJam (24 B) DennisMitchell in CJam (128 B) js1 in Ruby (198 B) ustimaw in Ruby (224 B) Kiniv in Q (249 B) ShadowSong in Ruby (259 B) takuk in Ruby (261 B) iehn in Ruby (263 B) | VehicleOfPuzzle in Perl (268 B) intijk in Python (272 B) jargon in Python (279 B) striker45 in Python (280 B) Liacd in Python (282 B) ayush.jaggi in Python (289 B) ImpassableMe in Python (293 B) mesksr in Python (294 B) | dhanpath in Python (295 B) blaxter in Ruby (296 B) lyoz in Python (298 B) sumit250 in Python (298 B) anbublackop in Python (300 B) sunshinepower01 in Python (302 B) Hichamdz38 in Python (309 B) StefanPochmann in Python (316 B) |
Solved in...
| C++ (4677 sets) Python (1599 sets) Java (1463 sets) C# (209 sets) C (158 sets) Ruby (86 sets) Haskell (53 sets) Go (48 sets) JavaScript (43 sets) Scala (33 sets) Perl (27 sets) MATLAB (20 sets) PHP (20 sets) OCaml (19 sets) | Pascal (8 sets) D (6 sets) Groovy (6 sets) Objective-C (6 sets) Julia (5 sets) Erlang (4 sets) Kotlin (4 sets) Lisp (4 sets) Lua (4 sets) Q (4 sets) R (4 sets) Scheme (4 sets) Swift (4 sets) CJam (3 sets) | CoffeeScript (3 sets) Visual Basic (3 sets) ActionScript (2 sets) Clojure (2 sets) Dart (2 sets) Racket (2 sets) Rust (2 sets) Shell (2 sets) TCL (2 sets) TypeScript (2 sets) Factor (1 set) Picat (1 set) |
Submission Origin
| China (779 contestants) United States (705 contestants) India (681 contestants) Japan (222 contestants) Russia (178 contestants) Taiwan (176 contestants) South Korea (157 contestants) Canada (151 contestants) Brazil (128 contestants) Australia (87 contestants) France (81 contestants) Vietnam (72 contestants) Ukraine (69 contestants) Singapore (64 contestants) Bangladesh (64 contestants) Poland (52 contestants) Hong Kong (52 contestants) Thailand (47 contestants) Indonesia (44 contestants) Germany (36 contestants) Egypt (34 contestants) Argentina (34 contestants) Spain (33 contestants) Iran (31 contestants) Romania (27 contestants) New Zealand (26 contestants) Hungary (24 contestants) Belarus (24 contestants) Kazakhstan (21 contestants) United Kingdom (20 contestants) Slovakia (19 contestants) Mexico (19 contestants) Turkey (17 contestants) Israel (16 contestants) | Italy (15 contestants) Greece (14 contestants) Colombia (14 contestants) Sweden (13 contestants) South Africa (13 contestants) Peru (13 contestants) Switzerland (12 contestants) Portugal (12 contestants) Czech Republic (12 contestants) Bolivia (12 contestants) Netherlands (11 contestants) Lithuania (11 contestants) Bulgaria (11 contestants) Belgium (11 contestants) Georgia (8 contestants) Croatia (8 contestants) ? (8 contestants) Philippines (7 contestants) Pakistan (7 contestants) Venezuela (6 contestants) Sri Lanka (6 contestants) Serbia (6 contestants) Finland (6 contestants) Chile (6 contestants) Slovenia (5 contestants) Nigeria (5 contestants) Mongolia (5 contestants) Malaysia (5 contestants) Austria (5 contestants) Tunisia (4 contestants) Norway (4 contestants) Moldova (4 contestants) Latvia (4 contestants) Iceland (4 contestants) | Denmark (4 contestants) Morocco (3 contestants) Macedonia (3 contestants) Lebanon (3 contestants) Kyrgyzstan (3 contestants) Azerbaijan (3 contestants) Armenia (3 contestants) Nepal (2 contestants) Macau (2 contestants) Luxembourg (2 contestants) Kenya (2 contestants) Ireland (2 contestants) Guadeloupe (2 contestants) Estonia (2 contestants) Dominican Republic (2 contestants) Cyprus (2 contestants) Algeria (2 contestants) Uzbekistan (1 contestant) Turkmenistan (1 contestant) Syria (1 contestant) Paraguay (1 contestant) Panama (1 contestant) Mozambique (1 contestant) Kosovo (1 contestant) Jordan (1 contestant) Jamaica (1 contestant) Guinea (1 contestant) Ethiopia (1 contestant) Cayman Islands (1 contestant) Cambodia (1 contestant) Bosnia and Herzegovina (1 contestant) Benin (1 contestant) |