Round 1A: BFFs
1793 correct small sets and 1275 correct large sets. View problem statement or contest analysis.
Compact solutions
 DennisMitchell in CJam (278 B) iehn in Ruby (461 B) Dorel in Python (471 B) Tjandra in C (499 B) Hooyoung in Julia (513 B) DpEpsilon in Python (528 B) jiefeng in C++ (569 B) thinfaifai in Q (573 B) | ameboide in Ruby (594 B) comGongDoRi in C++ (595 B) partiallyfinite in C++ (595 B) MWong in C++ (602 B) magrady in C++ (606 B) doodhwala in Python (607 B) tomlau in C++ (608 B) CMM in Python (612 B) | hiwang123 in C++ (627 B) aditsu in Python (630 B) HYEA in C++ (632 B) AmanS in C++ (639 B) tsebayoth in C++ (645 B) Kezia in C++ (646 B) CalTroll in Python (650 B) SmartSchizo in C++ (662 B) |
Solved in...
| C++ (2170 sets) Python (391 sets) Java (306 sets) C# (49 sets) Ruby (22 sets) Haskell (21 sets) C (19 sets) OCaml (12 sets) Scala (12 sets) Go (11 sets) | MATLAB (8 sets) D (6 sets) Erlang (4 sets) JavaScript (4 sets) Lisp (4 sets) Pascal (4 sets) Julia (3 sets) Kotlin (3 sets) Perl (3 sets) Groovy (2 sets) | PHP (2 sets) Q (2 sets) Racket (2 sets) Rust (2 sets) CJam (1 set) Factor (1 set) Picat (1 set) Visual Basic (1 set) |
Submission Origin
| China (414 contestants) United States (240 contestants) Russia (118 contestants) Japan (110 contestants) India (82 contestants) Taiwan (72 contestants) Canada (60 contestants) South Korea (55 contestants) Brazil (55 contestants) Australia (34 contestants) France (33 contestants) Poland (32 contestants) Vietnam (31 contestants) Thailand (28 contestants) Ukraine (26 contestants) Bangladesh (22 contestants) Indonesia (20 contestants) Hong Kong (20 contestants) Argentina (19 contestants) Germany (17 contestants) Singapore (16 contestants) Belarus (16 contestants) Iran (14 contestants) United Kingdom (13 contestants) Slovakia (12 contestants) Israel (12 contestants) Egypt (12 contestants) | Spain (10 contestants) Hungary (10 contestants) New Zealand (9 contestants) Kazakhstan (9 contestants) Czech Republic (9 contestants) Romania (8 contestants) Netherlands (8 contestants) Greece (8 contestants) Bulgaria (8 contestants) Belgium (8 contestants) Switzerland (7 contestants) Peru (7 contestants) South Africa (6 contestants) Portugal (6 contestants) Mexico (6 contestants) Lithuania (6 contestants) Georgia (6 contestants) Turkey (5 contestants) Philippines (5 contestants) Bolivia (5 contestants) ? (5 contestants) Slovenia (4 contestants) Finland (4 contestants) Croatia (4 contestants) Colombia (4 contestants) Turkmenistan (3 contestants) Sweden (3 contestants) | Serbia (3 contestants) Iceland (3 contestants) Chile (3 contestants) Moldova (2 contestants) Lebanon (2 contestants) Latvia (2 contestants) Kyrgyzstan (2 contestants) Dominican Republic (2 contestants) Denmark (2 contestants) Venezuela (1 contestant) U.S. Virgin Islands (1 contestant) Tunisia (1 contestant) Sri Lanka (1 contestant) Paraguay (1 contestant) Norway (1 contestant) Malaysia (1 contestant) Macedonia (1 contestant) Macau (1 contestant) Luxembourg (1 contestant) Jordan (1 contestant) Italy (1 contestant) Cyprus (1 contestant) Cayman Islands (1 contestant) Benin (1 contestant) Azerbaijan (1 contestant) Austria (1 contestant) |