Round 1A: Full Binary Tree
1853 correct small sets and 1531 correct large sets. View problem statement or contest analysis.
Compact solutions
 wwwwodddd in Python (524 B) Hooyoung in Python (524 B) wwwwodddd in Python (565 B) tres in Python (605 B) edgarthewise in Python (606 B) ZhouYuChen in C++ (621 B) myreg in Python (630 B) rgs in Python (645 B) | myreg in Python (669 B) yuxingdubai in C++ (674 B) rgs in Python (684 B) cinoss in Python (689 B) amclark in Python (695 B) Grzesiu in Python (701 B) libragold in Ruby (702 B) cinoss in Python (715 B) | AxiomOfChoice in Ruby (734 B) Escapist in Python (744 B) Grzesiu in Python (755 B) real in Python (756 B) math4tots in Python (757 B) Ahbong in Python (765 B) nwin in Python (769 B) WanderingID in C++ (773 B) |
Solved in...
| C++ (2568 sets) Java (416 sets) Python (227 sets) C# (54 sets) C (30 sets) Ruby (19 sets) Haskell (15 sets) | Scala (9 sets) Go (6 sets) Pascal (5 sets) PHP (5 sets) Kotlin (4 sets) OCaml (4 sets) JavaScript (3 sets) | Perl (3 sets) D (2 sets) F# (2 sets) Groovy (2 sets) MATLAB (2 sets) CoffeeScript (1 set) R (1 set) |
Submission Origin
| China (535 contestants) United States (198 contestants) Russia (130 contestants) Japan (127 contestants) India (84 contestants) Taiwan (76 contestants) Brazil (58 contestants) Canada (50 contestants) South Korea (36 contestants) Poland (31 contestants) Australia (31 contestants) Ukraine (27 contestants) Thailand (27 contestants) Bangladesh (27 contestants) Belarus (26 contestants) Slovakia (24 contestants) Vietnam (22 contestants) Hong Kong (21 contestants) Argentina (21 contestants) Indonesia (19 contestants) Egypt (15 contestants) Iran (14 contestants) Germany (14 contestants) France (14 contestants) Mexico (13 contestants) Singapore (12 contestants) Czech Republic (11 contestants) | Bulgaria (11 contestants) Hungary (10 contestants) Spain (9 contestants) Israel (9 contestants) Colombia (8 contestants) Romania (7 contestants) Peru (7 contestants) New Zealand (7 contestants) Finland (7 contestants) Sweden (6 contestants) Philippines (6 contestants) Croatia (6 contestants) Bolivia (6 contestants) United Kingdom (5 contestants) Kazakhstan (5 contestants) Greece (5 contestants) Belgium (5 contestants) Austria (5 contestants) Serbia (4 contestants) Lithuania (4 contestants) Lebanon (4 contestants) Latvia (4 contestants) Portugal (3 contestants) Netherlands (3 contestants) Dominican Republic (3 contestants) Chile (3 contestants) Venezuela (2 contestants) | Turkey (2 contestants) Sri Lanka (2 contestants) South Africa (2 contestants) North Korea (2 contestants) Jordan (2 contestants) Italy (2 contestants) Georgia (2 contestants) Denmark (2 contestants) Armenia (2 contestants) Zimbabwe (1 contestant) Vatican City (1 contestant) Uzbekistan (1 contestant) Syria (1 contestant) Switzerland (1 contestant) Rwanda (1 contestant) Pakistan (1 contestant) Norway (1 contestant) Malaysia (1 contestant) Macau (1 contestant) Kyrgyzstan (1 contestant) Jamaica (1 contestant) Ireland (1 contestant) Iceland (1 contestant) Estonia (1 contestant) Costa Rica (1 contestant) Cayman Islands (1 contestant) Azerbaijan (1 contestant) |